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Researched and ranked by flush data

Best Round Bowl Toilets for Small Bathrooms

A round bowl projects 25 to 27 inches from the finished wall, compared to 29 to 31 inches for an elongated bowl. That four-inch gap is often the difference between a bathroom door that swings freely and one that scrapes the seat, or between knees that clear the facing vanity and knees that do not. This guide ranks the best round-bowl toilets by bowl projection, independent MaP flush-test scores, EPA WaterSense certification, gallons per flush and the consistent patterns found across thousands of aggregated owner reviews, so you gain back floor space without giving up a flush that works.

Why Trust Best Flushing Toilets

  • Flushing power and MaP flush-test scores
  • Water efficiency (GPF and EPA WaterSense)
  • Aggregated owner reviews
  • Clog resistance and trapway design
  • Brand reliability and warranty

Research updated June 2026.

Quick Answer

The TOTO Drake II (round) is the best round-bowl toilet for small bathrooms. Its E-Max flush system earns a 1,000-gram MaP score at just 1.28 GPF, and its SoftClose seat is included. For the best value in a round bowl, the American Standard Cadet 3 (round) matches that 1,000-gram MaP score at a lower cost, while the Kohler Santa Rosa is the cleanest compact one-piece round bowl for easier maintenance.

Choosing the right bowl shape is the first decision in any small-bathroom toilet project, and it is the one that determines whether you spend the next ten years bumping into your toilet or not. A round-front bowl is physically shorter than an elongated bowl, measuring roughly 25 to 27 inches from the wall versus 29 to 31 inches for an elongated shape. Manufacturers often offer the same model family in both configurations, and the flush performance is usually identical between them. What changes is the bowl depth, the interior sitting area and how much floor space you recover in front of the toilet. For most people, a round bowl provides plenty of sitting comfort. For a small bathroom, it may be the only workable choice.

The rankings below draw on published manufacturer dimensions, MaP (Maximum Performance) flush-test data, EPA WaterSense certification records and the consistent patterns across thousands of verified owner reviews from multiple retail platforms. We have not installed or physically tested any of these toilets. What we have done is compare the numbers that matter in a small bathroom: how short is the bowl projection, what is the MaP score, how much water does each flush use, and does the model hold up in real daily use according to long-term owners. Each pick here pairs a genuinely compact footprint with a flush strong enough that you will not be reaching for the handle twice. For the full performance ranking across every bathroom size, see our guide to the best flushing toilets.

Which Round Bowl Toilet Has the Strongest Flush?

Several round-bowl toilets post the maximum 1,000-gram MaP score, including the TOTO Drake II (round), the American Standard Cadet 3 (round), the American Standard Champion 4 (round) and the Kohler Cimarron (round). Among these, the Champion 4 uses 1.6 GPF for its flush power while the Drake II and Cadet 3 both achieve 1,000 grams at a water-efficient 1.28 GPF. For the strongest flush at the lowest water use in a small bathroom, the TOTO Drake II (round) is the most balanced choice.

What Is a Good MaP Score for a Round Toilet?

MaP (Maximum Performance) testing measures how many grams of solid waste a toilet can clear in a single flush. The residential minimum pass threshold is 250 grams, but a score of 600 grams or higher is considered strong for daily use. A MaP score of 800 to 1,000 grams is excellent, meaning the toilet can handle exceptionally heavy loads without clogging. Every round-bowl toilet ranked here scores at least 800 grams, and several reach the maximum 1,000-gram rating.

What Is the Best Round Bowl Toilet for Preventing Clogs?

The round-bowl toilets least likely to clog are those with a 3-inch or larger flush valve paired with a fully glazed trapway and a high MaP score. The American Standard Champion 4 (round) features a 4-inch flush valve and a 2 3/8-inch trapway, which is the widest in its class, making it the top pick for clog resistance. The TOTO Drake II (round) and the Gerber Viper (round) both achieve 1,000-gram MaP scores with fully glazed 2-inch or larger trapways and are also strong clog-prevention options.

Which Round Bowl Toilet Offers the Best Value?

The American Standard Cadet 3 (round) offers the best value among round-bowl toilets because it earns a 1,000-gram MaP score, carries EPA WaterSense certification at 1.28 GPF, and is available in a 10-inch rough-in version at a significantly lower price than comparable TOTO or Kohler models. For buyers who want value with a brand-name warranty, the Gerber Viper (round) is also strong, earning a 1,000-gram MaP score and carrying a limited lifetime warranty on the vitreous china.

How Does a Round Bowl Compare to an Elongated Bowl in a Small Bathroom?

A round bowl projects roughly 25 to 27 inches from the finished wall, while an elongated bowl projects 29 to 31 inches. The round bowl is typically 3 to 5 inches shorter in depth, which can determine whether a bathroom door swings freely, whether the toilet meets the minimum 21-inch clearance required by most building codes and whether a second person can fit comfortably in the room. Flush performance between the two bowl shapes is identical when the same model family offers both, so a round bowl costs nothing in flush power.

How We Ranked These Round Bowl Toilets

Every toilet here had to meet three criteria before it earned a place on the list. First, it must be available in a round-front configuration with a bowl projection short enough to matter in a small bathroom. Second, it must post a MaP score of 800 grams or higher, because anything below that risks second-flush frustration in daily use. Third, it must be backed by verifiable owner feedback and available in the US market through a major retailer. Within that filtered group, we ranked by flush power, water efficiency, bowl height options, trapway design, brand warranty and the patterns in long-term owner reviews. We gave extra weight to models that offer a 10-inch rough-in option, since many small bathrooms in older homes have a shorter rough-in than the standard 12 inches.

For buyers balancing the round-vs-elongated decision, our detailed breakdown of best toilets of 2026 covers both shapes across every category. If you are outfitting a bathroom for the whole family, the guide to the best toilets for large families covers high-traffic clog resistance in more depth.

ToiletBest ForMaP ScoreGPFBowl HeightRatingCheck Price
TOTO Drake II (Round)Best overall1000 g1.28Standard 15 in4.7Check price
American Standard Cadet 3 (Round)Best value1000 g1.28Comfort 16.5 in4.5Check price
Kohler Santa Rosa (Round)Best one-piece800 g1.28Comfort 16.5 in4.6Check price
TOTO Entrada (Round)Tightest footprint800 g1.28Comfort 17 in4.5Check price
Kohler Cimarron (Round)Comfort height1000 g1.28Comfort 16.5 in4.6Check price
American Standard Champion 4 (Round)Clog prevention1000 g1.6Comfort 16.5 in4.5Check price
Gerber Viper (Round)Budget pick1000 g1.28Standard 15 in4.4Check price
Kohler Highline (Round)Classic workhorse800 g1.28Standard / Comfort4.5Check price
Swiss Madison St. Tropez (Round)Modern design800 g1.1Comfort 16.5 in4.3Check price

The 9 Best Round Bowl Toilets, Ranked and Reviewed

1
Best Overall

TOTO Drake II (Round)

4.7 Small bathrooms

The round-front Drake II is the round-bowl toilet we recommend first for small bathrooms because TOTO's E-Max flush system earns the maximum 1,000-gram MaP score at just 1.28 GPF, and the SoftClose seat ships in the box rather than being sold separately the way it is with the original Drake.

Flush TypeSingle, E-Max gravity
GPF1.28
MaP Score1000 grams
Bowl HeightStandard (15 in)
Warranty1-year limited
Best For
  • Small bathrooms with daily traffic
  • Buyers who want a SoftClose seat included
  • A top-tier 1,000-gram flush at 1.28 GPF
Not Ideal For
  • Buyers who prefer a comfort-height seat
  • Anyone wanting a skirted trapway

The Drake II uses TOTO's E-Max flush system, which pushes a wide column of water through a large 3-inch flush valve and a fully glazed, 2-inch trapway in a single smooth pull. The round bowl projects roughly 26 inches from the finished wall, earning back the depth an elongated bowl would have taken. Despite the compact footprint, this flush system scores 1,000 grams on the MaP test, meaning it can clear extremely heavy loads in a single flush. The toilet also carries EPA WaterSense certification at 1.28 gallons per flush, so it qualifies for utility rebates in most states.

Owners consistently praise the Drake II for a dependably strong flush with a very low clog rate across years of use. The SoftClose seat is a notable upgrade over the original Drake, which still sells the seat separately. The standard-height bowl at 15 inches sits lower than a comfort-height model, which is fine for most adults and the natural preference for children. The styling is straightforward and functional rather than modern, but the reliability record makes it the safest round-bowl pick on this list.

Expert Take

The Drake II is the round-bowl benchmark because no other toilet in this category combines a 1,000-gram MaP score, 1.28 GPF water efficiency, a short round projection and an included SoftClose seat in a single package. If you are outfitting a small bathroom that still sees daily use, start here and only change if a specific need like comfort height or a skirted trapway pulls you toward a different model.

Check price on Amazon
Bottom Line: The strongest round-bowl toilet in a small bathroom, combining a max-rated 1,000-gram flush with a space-saving footprint and an included SoftClose seat.
American Standard Cadet 3 round toilet
2
Best Value

American Standard Cadet 3 (Round)

4.5 Budget buyers

The round-front Cadet 3 achieves the same 1,000-gram MaP score as the TOTO Drake II at a meaningfully lower purchase price, making it the easiest recommendation for a small bathroom on a tight budget or a rental property that needs a reliable, low-maintenance flush.

Flush TypeSingle, gravity
GPF1.28
MaP Score1000 grams
Bowl HeightComfort (16.5 in)
WarrantyLimited lifetime (china)
Best For
  • Rentals, basements and secondary baths
  • A strong 1,000-gram flush at a lower cost
  • Older bathrooms needing a 10-inch rough-in
Not Ideal For
  • Anyone who wants a skirted trapway
  • A design-forward bathroom update

American Standard's EverClean surface coats the bowl with an antimicrobial agent that inhibits the growth of stain-causing bacteria, a feature that keeps a small bathroom fresher between cleanings. The round-front bowl projects roughly 26.5 inches from the wall, and the comfort-height seat at 16.5 inches makes standing and sitting easier for taller adults. A 10-inch rough-in version is available, which solves the problem in older homes where the drain is closer to the wall than the standard 12 inches.

Owners consistently rate the Cadet 3 as a strong performer with a low clog rate and minimal maintenance needs. The exposed trapway is functional but plain, and the seat is not included. The limited lifetime warranty on the vitreous china is a long-term protection that most competing models at this price point do not offer. For buyers balancing a home upgrade across multiple rooms, the guide to best toilets for home covers how to match flush power to each room's traffic level.

Expert Take

This is the value benchmark the rest of the list is measured against. The round Cadet 3 earns a 1,000-gram MaP score that matches the most expensive toilets here, adds EverClean surface protection and a 10-inch rough-in option, and costs significantly less than the TOTO picks. If your priority is getting a strong, reliable flush into a small bathroom at the lowest sensible cost, this is the model to buy.

Check price on Amazon
Bottom Line: A 1,000-gram MaP flush in a short, comfortable round bowl at the best price on this list, with EverClean surface protection and a 10-inch rough-in option.
Kohler Santa Rosa round toilet
3
Best One-Piece

Kohler Santa Rosa (Round)

4.6 Easy cleaning

The Santa Rosa is a compact one-piece round toilet with no tank-to-bowl seam, which matters more than it sounds in a small bathroom where you are cleaning at close quarters and where a hidden seam means one less place for bacteria and mineral deposits to build up.

Flush TypeSingle, Class Five
GPF1.28
MaP Score800 grams
Bowl HeightComfort (16.5 in)
Warranty1-year limited
Best For
  • Modern bathrooms where appearance matters
  • Owners who want seamless surfaces for easy cleaning
  • A low silhouette that opens up a small room visually
Not Ideal For
  • Solo DIY installers (one-piece bodies are heavy)
  • The tightest budgets

The one-piece body unifies the tank and bowl into a single vitreous china shell with a low, clean silhouette. In a small bathroom, the visual effect of removing the tank-to-bowl gap makes the toilet look smaller and the room feel less crowded. Kohler's Class Five flushing system uses a direct-fed jet and a 3.25-inch flush valve to deliver a wide, powerful rinse that scores 800 grams on the MaP test, which is strong for daily residential use. The comfort-height bowl at 16.5 inches is the same seat height as most kitchen chairs, which reduces knee and lower-back strain for taller adults.

Owners give the Santa Rosa consistently positive notes on the quality of the flush and the ease of cleaning the seamless exterior. The main trade-off against a two-piece model is weight: one-piece toilets are substantially heavier to carry and set, so a second person makes the install much easier. The 800-gram MaP score is strong but not at the 1,000-gram ceiling, so for a very high-traffic bathroom, the Drake II or Cadet 3 would be the more conservative choice.

Expert Take

When the bathroom is small and the goal is to keep it looking clean and feeling open, the Santa Rosa one-piece design is the pick that delivers both. The seamless body saves ten minutes every time you clean, and the low profile reads as less bulky in a tight room. Accept the weight on installation day and this toilet will reward you for a decade.

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Bottom Line: The cleanest, lowest-profile round-bowl toilet here, with a seamless one-piece body that makes small bathrooms easier to maintain and look more open.
TOTO Entrada round toilet
4
Tightest Footprint

TOTO Entrada (Round)

4.5 Very tight spaces

The round-front Entrada has the most compact bowl projection in TOTO's accessible price range, making it the starting point for any bathroom where the floor depth is so limited that a standard-length round bowl still will not clear the door swing or the facing vanity.

Flush TypeSingle, gravity
GPF1.28
MaP Score800 grams
Bowl HeightComfort (17 in)
Warranty1-year limited
Best For
  • Powder rooms and closet baths where every inch counts
  • An affordable entry into TOTO build quality
  • Older homes with a 10-inch rough-in
Not Ideal For
  • High-traffic family bathrooms where a 1,000-gram score matters
  • Buyers who want a skirted trapway

The Entrada carries EPA WaterSense certification at 1.28 gallons per flush and a 10-inch rough-in option for older homes where the drain is set closer to the wall. The 800-gram MaP score places it in the strong category for residential use, and the comfort-height seat at 17 inches is slightly taller than the standard Drake II, which some adults prefer for ease of sitting and standing. TOTO's gravity flush on the Entrada is simple, with few moving parts, and the design's directness is one reason parts availability and long-term reliability are strong points for this model.

Owners describe the flush as dependable and consistent, noting a low clog rate over years of daily use. It is the less expensive TOTO on this list and one of the more affordable ways to get genuine TOTO engineering in a compact round body. The 800-gram MaP score is the main distinction from the Drake II, so for a powder room or a light-use secondary bath it is an excellent choice, but for a busy household the Drake II's 1,000-gram score provides more margin.

Expert Take

When the bathroom depth is the number that has stalled your whole project, start with the Entrada. It gives you real TOTO flush reliability in the shortest footprint the brand offers at an approachable cost, and the 10-inch rough-in option means it fits the awkward older bathrooms where the standard 12-inch drain position is simply not available.

Check price on Amazon
Bottom Line: The most compact round-bowl TOTO at an accessible price, with dependable gravity flush and a 10-inch rough-in option for older homes.
Kohler Cimarron round toilet
5
Best Comfort Height

Kohler Cimarron (Round)

4.6 Taller adults

The round-front Cimarron is the rare small-bathroom toilet that delivers both a short bowl projection and a comfort-height seat at 16.5 inches, a combination that is genuinely difficult to find because most comfort-height models default to elongated bowls.

Flush TypeSingle, Class Five
GPF1.28
MaP Score1000 grams
Bowl HeightComfort (16.5 in)
Warranty1-year limited
Best For
  • Taller adults sharing a small bathroom
  • A 1,000-gram flush with Class Five technology
  • Wide Kohler parts availability nationwide
Not Ideal For
  • Buyers who want a skirted trapway
  • Homes where children are the primary users

Kohler's Class Five flushing system powers a direct-fed siphon jet through a large 3.25-inch valve, earning the maximum 1,000-gram MaP score at 1.28 GPF. The round bowl keeps the front projection within the 26 to 27-inch range that works in a genuinely tight bathroom, while the seat height matches a standard kitchen chair, reducing knee and hip strain for adults over six feet tall. The comfort-height configuration also qualifies as ADA-compliant, which matters for shared bathrooms where accessibility is a factor.

Owners note the Cimarron is among the most dependable Kohler models in terms of long-term flush consistency, with a low clog rate and readily available replacement parts at hardware stores and plumbing suppliers across the country. For an older adult sharing a small bathroom, the combination of a short round projection and a chair-height seat is the best compromise available in this category. Our guide to the best toilets for seniors covers the full range of accessible options in more depth.

Expert Take

This is the pick for any small bathroom shared by taller adults who need the seat at chair height. The round bowl keeps the footprint compact, the 1,000-gram Class Five flush prevents clogs under real family use, and Kohler's national service network means you will never struggle to find a replacement part or a plumber familiar with the model.

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Bottom Line: Comfort-height seating and a 1,000-gram Class Five flush in a short round bowl, the best combination for taller adults in a small bathroom.
American Standard Champion 4 round toilet
6
Best Clog Prevention

American Standard Champion 4 (Round)

4.5 Clog-prone bathrooms

The round-front Champion 4 is the pick when clog prevention is the single most important factor, because its 4-inch flush valve and 2 3/8-inch trapway are the widest in their class and together create a bulk-clearing flush that can move an extraordinary load in a single pull.

Flush TypeSingle, gravity
GPF1.6
MaP Score1000 grams
Bowl HeightComfort (16.5 in)
WarrantyLimited lifetime (china)
Best For
  • Bathrooms with a history of frequent clogs
  • Households with older plumbing or slow drains
  • The widest available trapway in a round bowl
Not Ideal For
  • Water-efficiency priority households (1.6 GPF not WaterSense)
  • Buyers who want the minimum water use

American Standard's Champion 4 uses a 4-inch piston-action flush valve that is roughly 60 percent larger than the standard 2.5-inch valve found in most competing toilets. The 2 3/8-inch trapway is wider than any other model on this list, which means solid waste and toilet paper pass through the drain passage without the restriction that causes most residential clogs. The round-front bowl keeps the overall projection in the range workable for a small bathroom while the 1,000-gram MaP score confirms performance under heavy conditions.

The trade-off is water use: at 1.6 gallons per flush, the Champion 4 uses more water than the 1.28-GPF WaterSense models on this list. That is a legitimate consideration in areas with water surcharges or for buyers who want to qualify for utility rebates. Owners report an extremely low clog rate over years of daily use, and the 2 3/8-inch trapway is consistently cited as the reason by reviewers who switched to it after a history of clogs. For households managing high-traffic use in a small bathroom, this is the most defensible clog-prevention choice available.

Expert Take

If the small bathroom has a history of clogs and the priority is eliminating the problem rather than optimizing for water efficiency, the Champion 4 is the most credible engineering solution on the market. The 4-inch flush valve and 2 3/8-inch trapway leave far less room for a clog to form, and the 1,000-gram MaP score confirms it delivers on that promise under real conditions.

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Bottom Line: The widest trapway and largest flush valve in a round bowl, designed specifically for households where clog prevention outweighs water-efficiency optimization.
Gerber Viper round toilet
7
Best Budget

Gerber Viper (Round)

4.4 Budget installs

The Gerber Viper is a plumber-favorite round-front model that earns a 1,000-gram MaP score at 1.28 GPF, making it the no-frills option that performs like a premium toilet and costs less than most of the models above it on this list.

Flush TypeSingle, gravity
GPF1.28
MaP Score1000 grams
Bowl HeightStandard (15 in)
WarrantyLimited lifetime (china)
Best For
  • Rental properties and secondary bathrooms
  • A 1,000-gram flush at the lowest cost
  • Plumber-preferred, easy-to-service design
Not Ideal For
  • Buyers who want a premium finish or modern styling
  • Anyone expecting the seat to ship in the box

Gerber does not market the Viper heavily, but it has a strong following among plumbing professionals who prefer its simple, serviceable design and the availability of replacement parts. The round-front bowl keeps the projection within small-bathroom range, the gravity flush is straightforward with minimal moving parts, and the 1,000-gram MaP score puts it on par with TOTO and Kohler models that cost significantly more. The limited lifetime warranty on the vitreous china is a genuine long-term protection for a budget purchase.

Owner reviews are consistently positive on flush reliability and low maintenance. The styling is plain and functional, the seat sells separately, and the exposed trapway is utilitarian. None of those trade-offs undermine the core proposition: this is one of the cheapest round-bowl toilets available that still scores at the maximum level on the MaP test. For rental property owners managing multiple bathrooms, the Viper's combination of low purchase cost, strong flush and plumber familiarity makes it a practical first choice.

Expert Take

The Viper demonstrates that MaP score has no correlation with price at the budget end of the market. A 1,000-gram flush is a 1,000-gram flush whether it costs what the TOTO costs or what the Viper costs. If your priority is a strong flush in a small bathroom at the lowest reasonable spend, and you are comfortable buying the seat separately, this is a defensible choice.

Check price on Amazon
Bottom Line: A 1,000-gram MaP flush in a plain, serviceable round body at the lowest price on this list, with a limited lifetime warranty on the vitreous china.
Kohler Highline round toilet
8
Classic Workhorse

Kohler Highline (Round)

4.5 Reliable daily use

The Kohler Highline in round front is one of the most widely installed toilets in North America, and its combination of a strong flush, comfort-height option, wide parts availability and proven track record makes it a dependable choice for any small bathroom where reliability matters more than design.

Flush TypeSingle, gravity
GPF1.28
MaP Score800 grams
Bowl HeightStandard or Comfort
Warranty1-year limited
Best For
  • A proven, low-maintenance daily driver
  • Buyers who want standard or comfort height in the same model family
  • Wide parts availability for long-term ownership
Not Ideal For
  • Buyers who want a 1,000-gram MaP score
  • A modern or minimalist bathroom aesthetic

The Highline's strongest selling point is its track record. Kohler has made the Highline in various configurations for decades, and replacement parts for the flush valve, fill valve, flapper and handle are available at virtually every hardware store in the country. The round-front version projects roughly 26 to 27 inches from the wall, fitting the same small-bathroom footprint as the other picks on this list. The 800-gram MaP score is strong for moderate daily use, though not at the 1,000-gram ceiling.

It is available in both standard (14 to 15 inch) and comfort (16 to 17 inch) seat heights, giving buyers the flexibility to match their preference without switching to a different model family. Owners rate it very highly for long-term reliability and for the ease of self-servicing because any plumber or knowledgeable DIY owner can find and fit the right part without a special order. For a plain, dependable small-bathroom toilet that will never need a proprietary part, the Highline is the classic answer.

Expert Take

The Highline is what you buy when long-term serviceability matters as much as flush performance. It is not the most powerful toilet here, but the 800-gram MaP score is solid for most households, and the availability of parts means you can service this toilet yourself in an afternoon for the life of the bathroom. That is a form of value the MaP score alone does not capture.

Check price on Amazon
Bottom Line: The most widely serviced round-bowl toilet in North America, with an 800-gram flush, standard or comfort height options and universally available replacement parts.
Swiss Madison St Tropez round toilet
9
Modern Design

Swiss Madison St. Tropez (Round)

4.3 Style-first buyers

The Swiss Madison St. Tropez is the most visually distinctive toilet on this list, with a skirted trapway, a wall-hugging tank profile and a finish quality that matches toilets costing significantly more, making it the pick for a small bathroom renovation where aesthetics are part of the brief.

Flush TypeSingle, gravity
GPF1.1
MaP Score800 grams
Bowl HeightComfort (16.5 in)
Warranty1-year limited
Best For
  • Bathroom renovations where appearance matters
  • A skirted trapway that hides plumbing and simplifies cleaning
  • Ultra-low water use at 1.1 GPF
Not Ideal For
  • High-traffic bathrooms needing a 1,000-gram MaP score
  • Buyers who need a 10-inch rough-in option

The St. Tropez uses a concealed skirted trapway that covers the S-curve from the bowl to the floor drain, leaving a flat, smooth exterior surface that is faster to wipe clean than an exposed trapway. At 1.1 gallons per flush, it is the most water-efficient gravity toilet on this list, using less water per flush than a standard EPA WaterSense 1.28-GPF model. The comfort-height seat and the clean-lined tank create a bathroom aesthetic that holds up in a design-forward remodel.

The 800-gram MaP score is strong for light to moderate use, and the skirted trapway means the cleaning advantage is real rather than marketing language. Owners note that the toilet looks more expensive than its price point and that the flush is consistently clean. The trade-off is a lower MaP ceiling than the TOTO, Kohler and American Standard top picks, and parts are less universally available than for the major domestic brands. For a guest bathroom or a low-traffic powder room in a modern home, this is the most design-conscious round bowl on the list.

Expert Take

Swiss Madison has positioned the St. Tropez as a design alternative to the utilitarian two-piece models that dominate most small bathrooms, and for a guest bathroom or powder room the argument is solid. The skirted trapway is a genuine cleaning advantage, the 1.1 GPF water use is the lowest here, and the appearance is genuinely modern. Accept the lower MaP score for a low-traffic space and it will serve well.

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Bottom Line: The most design-forward round-bowl toilet here, with a skirted trapway, ultra-low 1.1 GPF water use and a modern profile that works well in powder rooms and guest baths.
Expert Take: Buying Guide Summary

The round-bowl decision comes down to two numbers before any other: bowl projection and MaP score. Measure the usable floor depth in your bathroom from the finished wall to the door swing or the facing fixture, then subtract 21 inches for the minimum clearance required by most building codes. What remains is the maximum bowl projection you can work with. Every toilet above fits within 27 inches. If your space allows any projection up to 27 inches, prioritize MaP score and choose the TOTO Drake II or the American Standard Cadet 3. If you need to go shorter than 26 inches, measure the specific model before ordering because published projections can vary by an inch between published specs and physical installation.

Round Bowl Buying Guide: What to Check Before You Buy

Bowl Projection: Measure Before You Order

Bowl projection is the distance from the finished wall to the front of the toilet bowl at its widest point. Most round-front bowls project between 25 and 27 inches. Most elongated bowls project between 29 and 31 inches. The three to five inch difference is meaningful when a bathroom is under 60 inches deep from wall to door, which describes most powder rooms and older secondary bathrooms built before modern fixture standards.

The minimum clearance in front of a toilet required by most US building codes is 21 inches. Some local codes and the ADA require 18 inches of side clearance. Verify the published projection for your specific model before ordering, because toilet specs are sometimes listed as overall length including the tank lid overhang rather than as the bowl projection itself. If in doubt, call the manufacturer's spec line and ask for the bowl-only projection from the finished wall.

MaP Score: The Only Flush Test That Matters

The Maximum Performance (MaP) flush test is conducted by an independent laboratory and measures how many grams of soybean paste (a standardized solid waste surrogate) a toilet can clear in a single flush. The residential minimum pass is 250 grams. A score of 600 grams is considered strong. A score of 800 grams is excellent. A score of 1,000 grams is the maximum, and several round-bowl toilets achieve it at 1.28 GPF. MaP scores are publicly posted at map-testing.com and updated regularly as new models are tested. Any toilet spec sheet that does not mention MaP should be compared against the MaP database before purchase.

GPF and EPA WaterSense Certification

Gallons per flush (GPF) determines both water cost and utility rebate eligibility. Toilets that use 1.28 GPF or less and pass performance testing qualify for EPA WaterSense certification. WaterSense toilets use 20 percent less water than the federal standard 1.6 GPF maximum, and many water utilities offer rebates of $50 to $200 for verified WaterSense replacements. Every model here except the American Standard Champion 4 (which uses 1.6 GPF) carries WaterSense certification at 1.28 GPF or lower. The Swiss Madison St. Tropez uses 1.1 GPF, making it the most water-efficient gravity toilet on the list.

Rough-In Measurement

The rough-in is the distance from the finished wall to the center of the floor drain (the closet bolt). Standard rough-in is 12 inches, which is what most modern toilets require. Older homes frequently have a 10-inch rough-in, and some older bathrooms have a 14-inch rough-in. If you are replacing a toilet in an older home, measure the rough-in before ordering because a 12-inch toilet installed on a 10-inch rough-in will not sit flush to the wall. Both TOTO and American Standard offer 10-inch rough-in versions of several models on this list, and Kohler offers a 10-inch option for the Cimarron.

One-Piece vs. Two-Piece Round Bowls

A one-piece toilet fuses the tank and bowl into a single vitreous china shell. The benefit in a small bathroom is primarily aesthetic and maintenance-related: no seam between the tank and bowl means one fewer place for water, bacteria and mineral deposits to accumulate, and the lower integrated tank profile makes the toilet look smaller in the room. The trade-off is weight: a one-piece body typically weighs 20 to 40 pounds more than a comparable two-piece model, making installation harder for a solo DIY project. Two-piece models ship the tank and bowl separately, which makes each piece lighter to carry into a bathroom through narrow doors or up stairs. The Kohler Santa Rosa is the only one-piece on this list. All others are two-piece.

Bowl Height: Standard vs. Comfort

Standard-height toilet bowls measure 14 to 15 inches from floor to seat rim. Comfort-height bowls measure 16 to 18 inches, matching the height of most kitchen chairs. Comfort height is easier for adults over 5 feet 9 inches to sit and stand from, and it is the ADA-compliant height for accessible bathrooms. Standard height is more comfortable for children and for shorter adults. For a shared small bathroom, most plumbers recommend comfort height for adult-only households. The TOTO Drake II and the Gerber Viper on this list offer standard height. The remaining picks offer comfort height, and the Kohler Highline is available in both.

Trapway Design and Clog Resistance

The trapway is the S-curved channel inside the toilet through which waste exits the bowl and enters the drain. Wider trapways reduce clog risk because solid waste has more clearance to pass. Standard residential trapways measure 1.75 to 2 inches in diameter. A fully glazed trapway, meaning the smooth ceramic coating extends through the entire channel, reduces friction and resists buildup. The American Standard Champion 4's 2 3/8-inch trapway is the widest on this list. TOTO's fully glazed SanaGloss coating on the Drake II and Entrada reduces the surface friction in the trapway and bowl. Skirted trapways, like the Swiss Madison St. Tropez's, cover the external S-curve but do not necessarily change the internal diameter.

Common Questions

Frequently Asked Questions

? What is the difference between a round bowl and an elongated bowl?

A round bowl is roughly circular in shape and projects 25 to 27 inches from the finished wall. An elongated bowl is oval and projects 29 to 31 inches. The round bowl saves 3 to 5 inches of floor depth, which matters significantly in small bathrooms. Flush performance is identical between the two shapes when the same toilet model is offered in both configurations.

? Are round bowl toilets less comfortable than elongated bowls?

For most adults, a round bowl provides adequate sitting comfort for typical bathroom use. The difference in seat area is noticeable but not a comfort problem for the majority of users. Elongated bowls are often preferred for comfort by taller adults or those who spend extended time on the toilet. For a small bathroom where gaining floor depth matters, the round bowl is the practical trade-off.

? Do round bowl toilets flush as powerfully as elongated ones?

Yes. Flush power is determined by the flush valve size, the trapway diameter and the water volume, not the bowl shape. When a manufacturer offers the same model in both round and elongated configurations, the MaP score and the GPF are identical. The TOTO Drake II, the American Standard Cadet 3 and the Kohler Cimarron all achieve their top MaP scores in round-front versions.

? What MaP score should I look for in a round bowl toilet?

For a light-use powder room or guest bath, a MaP score of 600 to 800 grams is sufficient. For a daily-use bathroom shared by two or more adults, a score of 800 grams or higher is the safer target. For a high-traffic bathroom or one with a history of clogs, the 1,000-gram maximum score eliminates the margin for error. Every toilet on this list scores at least 800 grams.

? How do I measure the rough-in for a round toilet?

The rough-in is the distance from the finished wall behind the toilet to the center of the floor drain (the closet bolt hole). To measure it, remove the toilet seat and measure from the wall to the center of the bolt cap on either side of the base. Standard rough-in is 12 inches. If your measurement is 10 inches, look for a toilet that specifically offers a 10-inch rough-in version, such as the TOTO Entrada or the American Standard Cadet 3.

? Does the seat come included with round bowl toilets?

Not always. The TOTO Drake II includes a SoftClose seat, which is a significant advantage over the original Drake. The Kohler Santa Rosa and most other one-piece models typically include a seat. Most two-piece models, including the Gerber Viper, the TOTO Entrada and the Kohler Highline, sell the seat separately. Verify before ordering to avoid an extra trip to the hardware store.

? What is EPA WaterSense certification and why does it matter for round toilets?

EPA WaterSense is a federal voluntary certification program that labels toilets using 1.28 gallons per flush or less that have also passed independent performance testing. WaterSense toilets use 20 percent less water than the federal maximum of 1.6 GPF. In practical terms, a certified toilet saves a typical household 13,000 gallons of water per year compared to a 3.5-GPF toilet. Most water utilities offer rebates ranging from $50 to $200 per WaterSense toilet replaced.

? Can I use a round bowl toilet in a bathroom with a 10-inch rough-in?

Yes, but only if the specific model is offered in a 10-inch rough-in version. Standard toilets require a 12-inch rough-in and will not sit flush to the wall on a 10-inch drain. The TOTO Entrada (round), the American Standard Cadet 3 (round) and the Kohler Cimarron (round) all offer a 10-inch rough-in option. Always confirm the rough-in version before ordering.

? How heavy is a one-piece round toilet compared to a two-piece?

A one-piece toilet typically weighs 70 to 120 pounds, compared to 50 to 80 pounds for a comparable two-piece model shipped in two parts. The Kohler Santa Rosa weighs approximately 88 pounds as a single unit. Two-piece toilets ship the tank and bowl separately, so no single piece exceeds 55 pounds. For solo DIY installation in a small bathroom at the top of stairs or through a narrow door, the two-piece is significantly easier to manage.

? Which round bowl toilet is best for a powder room or half bath?

For a powder room or half bath with light traffic, the TOTO Entrada (round) is the most compact and efficient option at 1.28 GPF with an 800-gram MaP score. For a guest bathroom with moderate use, the Swiss Madison St. Tropez (round) is the strongest design pick, with a skirted trapway and ultra-low 1.1 GPF use. For a powder room that sees heavier use than expected, the TOTO Drake II's 1,000-gram score provides the most safety margin.

? Are round bowl toilets better for children?

Round bowls are generally considered better for young children because the shorter, more circular seat area is closer to the size of a child's body, reducing the risk of a child slipping into the bowl. The standard-height seat at 14 to 15 inches is also more appropriate for children than a comfort-height seat at 16 to 17 inches. As children grow, comfort height becomes preferable. For a shared family bathroom, comfort height is typically the better long-term choice.

? What is the best round bowl toilet for seniors or adults with mobility issues?

The Kohler Cimarron (round) is the best round-bowl toilet for seniors or adults with limited mobility because it combines a comfort-height seat at 16.5 inches with a 1,000-gram MaP flush and ADA compliance in a compact round body. The American Standard Cadet 3 (round) is a strong value alternative at the same comfort height. Our guide to the best toilets for seniors covers the full range of accessibility considerations.

? How long does a round bowl toilet typically last?

The vitreous china body of a toilet can last 50 years or more. The internal components, including the flush valve, fill valve and flapper, typically need replacement every 5 to 10 years depending on water quality and use frequency. Hard water accelerates mineral buildup on internal parts. TOTO and Kohler both manufacture proprietary parts that may need to be ordered online, while Kohler Highline and American Standard Cadet 3 parts are available at most hardware stores.

? Does a skirted trapway affect flush performance?

No. A skirted trapway is a decorative exterior panel that covers the external S-curve of the trapway, making the outside surface of the toilet smooth and easier to clean. It does not change the internal diameter of the trapway channel or the flush mechanics. The Swiss Madison St. Tropez's skirted design improves cleaning ease without affecting its 800-gram MaP flush performance.

? What is the minimum bathroom space required for a round bowl toilet?

Most building codes require a minimum of 21 inches of clear space in front of the toilet and 15 inches from the centerline of the toilet to the nearest side wall or obstruction (18 inches for ADA compliance). With a round bowl projecting 25 to 27 inches from the wall, you need at least 46 to 48 inches of total depth from the wall to the opposite wall or door to meet code minimum clearance. An elongated bowl would require 50 to 52 inches for the same clearance.

? Which brands make the best round bowl toilets?

TOTO, Kohler and American Standard produce the most consistently reviewed and highest-performing round bowl toilets in the US market. TOTO leads for flush technology and longevity. Kohler leads for design variety, comfort-height options and service network. American Standard leads for value at high flush performance. Gerber is a strong budget alternative with professional plumber support. Swiss Madison offers the best design aesthetics at mid-range pricing.

? Can I replace an elongated toilet with a round bowl without modifying the plumbing?

Yes, in almost all cases. The floor drain (rough-in) and the water supply connection are the same whether you install a round or elongated toilet, as long as the rough-in measurement matches. The bowl shape above the floor makes no difference to the plumbing connection. The only consideration is that a round bowl will project 3 to 5 inches less into the room than the elongated bowl it replaces, which may require a seat adjustment but not any plumbing modification.

? Are two-piece round bowl toilets easier to install than one-piece?

Two-piece toilets are generally easier to install because the tank and bowl ship and carry separately, keeping the weight of any single piece manageable for one person. A one-piece toilet is heavier and more awkward to carry through doorways or up stairs, and positioning it over the wax ring without a second person can be difficult. For a small bathroom at the end of a narrow hallway, a two-piece round toilet is the more practical installation choice.

? Is the TOTO Drake II better than the TOTO Drake for a small bathroom?

The TOTO Drake II is the better choice for most small bathrooms for two reasons. First, it uses TOTO's E-Max flush system, which earns a 1,000-gram MaP score at 1.28 GPF with a quieter and more complete single flush than the older G-Max system in the original Drake. Second, the Drake II includes a SoftClose seat in the box, while the Drake sells the seat separately. The original Drake remains a strong toilet but the Drake II improves on it in the ways that matter most to daily users.

Sources

  • EPA WaterSense, epa.gov/watersense
  • MaP (Maximum Performance) flush testing, map-testing.com
  • Manufacturer published specifications (TOTO, Kohler, American Standard, Gerber, Swiss Madison)

Our Verdict

For most small bathrooms the TOTO Drake II (round) is the answer: it earns a 1,000-gram MaP score at 1.28 GPF, includes a SoftClose seat, carries EPA WaterSense certification and projects roughly 26 inches from the wall. Buyers on a tighter budget get the same 1,000-gram MaP score in the American Standard Cadet 3 (round) at a lower purchase price, and the Kohler Santa Rosa (round) is the best one-piece option for anyone who wants seamless lines and easier cleaning. For bathrooms where clog prevention is the priority, the American Standard Champion 4's 4-inch flush valve and 2 3/8-inch trapway are in a category of their own. Regardless of which model you choose, selecting a round bowl over an elongated one typically recovers 3 to 5 inches of usable floor depth in a small bathroom, and every toilet above does it without sacrificing the flush performance you will rely on every day for the next decade.

How we rank & our data sources

We do not run physical lab tests. Rankings are built from published, verifiable data and real owner feedback, never paid placement.

Researched by Marcus Bell · Last updated July 4, 2026 · Our review method

M
Researched by Marcus Bell

Marcus compiles bathroom-fixture data, MaP flush scores, GPF ratings, trapway and flush-valve specs, and weighs them against thousands of verified owner reviews to build our rankings. He does not run physical lab tests; every verdict is sourced from published specifications, certifications (MaP, EPA WaterSense) and real owner feedback.

Updated July 2026 · Toilets
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