Best picks

9 Best One-Piece Toilets for a Cleaner Look (November 2026)

Updated on · By the Rival Toilets team

The best one-piece toilets include the HOROW T0338W ADA One-Piece Toilet for small bathrooms with taller users, the BAYROLL One Piece Sleek Modern Toilet for apartments and studio baths, and the DeerValley Compact One-Piece Toilet for the tightest floor space.

On this page (8 sections)
  1. The best one piece toilets for every kind of bathroom
  2. How these one piece toilets were compared
  3. One piece toilets compared side by side
  4. How much space does a one piece toilet really need?
  5. Is chair height or standard height better?
  6. Which flush type saves more water?
  7. Do one piece toilets fit a small bathroom better than two piece models?
  8. Which one piece toilet fits your bathroom?

The best one piece toilet for most homes is the HOROW T0338W ADA One-Piece Toilet, which pairs a 17.3 inch chair height seat with a 26.6 inch depth that fits small baths. If your floor space is tighter than that, the DeerValley compact models shave more than an inch off the depth.

For a modern skirted look with hands-free features, the EPLO smart bidet is the pick.

A one-piece toilet combines the tank and bowl in a single ceramic shell. That means fewer seams to leak and fewer ledges to wipe.

You trade a little weight and a higher price for an easier cleaning routine. If you're still deciding between the two types, our guide to are one piece or two piece toilets better breaks down the differences.

Depth matters more than width in most baths. The models here run from 24.6 inches to 28.5 inches deep, which is a four inch swing that can decide whether your door opens.

Seat height matters next, because a standard bowl and a chair height bowl feel very different for older knees and taller adults. Flush type and water volume come third.

Our picks at a glance

  1. 1 HOROW T0338W ADA One-Piece Toilet
    Best for small bathrooms with taller users

    HOROW T0338W ADA One-Piece Toilet

    8.9/10 our score

    See it on Amazon
  2. 2 BAYROLL One Piece Sleek Modern Toilet
    Best for apartments and studio baths

    BAYROLL One Piece Sleek Modern Toilet

    8.8/10 our score

    See it on Amazon
  3. 3 DeerValley Compact One-Piece Toilet, Standard Height
    Best for the tightest floor space

    DeerValley Compact One-Piece Toilet, Standard Height

    8.7/10 our score

    See it on Amazon
  1. 4St. Tropez Comfort Height One-Piece Toilet

    St. Tropez Comfort Height One-Piece Toilet

    Best for a classic elongated bowl
    Check it
  2. 5Casta Diva 17-Inch Chair Height One-Piece ToiletCheck it
  3. 6EPLO One Piece Smart Toilet Bidet

    EPLO One Piece Smart Toilet Bidet

    Best for hands-free use
    Check it
  4. 7WOODBRIDGEE One Piece Toilet with Soft Closing

    WOODBRIDGEE One Piece Toilet with Soft Closing

    Best for a quiet flush in a family bath
    Check it
  5. 8DeerValley Compact One-Piece Toilet, 12-Inch Rough-InCheck it
  6. 9KOHLER San Souci One-Piece Compact Elongated Toilet

    KOHLER San Souci One-Piece Compact Elongated Toilet

    Best for a hidden trapway and brand support
    Check it

The best one piece toilets for every kind of bathroom

The HOROW T0338W is the best overall because it balances chair height comfort, a compact skirted body and dual flush water savings. Every other pick on this list wins on one specific need: the shortest depth, the widest bowl, the lowest water use or the most hands-free features.

Start with your room's depth and rough-in, then choose the seat height and flush that suit the people using it.

1

HOROW T0338W ADA One-Piece Toilet: Best for small bathrooms with taller users

HOROW T0338W ADA One-Piece Toilet, one-piece toilets
8.9/10Our score
  • 26.6 in deep by 15 in wide
  • 17.3 in seat height
  • Dual flush 1.1/1.6 GPF
  • Soft-close PP seat

A compact skirted one-piece with chair height seating and dual flush, sized for a powder room or guest bath.

See it on Amazon

Pros

  • Chair height helps seniors and tall adults
  • Two rough-in versions
  • Soft-close seat stays screw fixed

Cons

  • Soft-close seat is plastic rather than a slow-drop upgrade
  • Needs the right rough-in picked before ordering

The HOROW T0338W suits a small main bath or powder room where tall users and guests share the seat. Its 17.3 inch floor-to-seat height makes sitting down and standing up easier for seniors and tall adults, while the 26.6 inch depth keeps it out of the doorway swing.

The dual flush runs 1.1 GPF for liquids and 1.6 GPF for solids, with a fully glazed 2 inch trapway behind the siphon flush. A soft-close PP seat closes quietly and stays put on screw fixings rather than lifting off.

HOROW sells it in both 10 inch and 12 inch rough-in versions, which matters if your floor bolts sit closer to the wall than standard. The larger side access openings make the floor mounting easier for a two-person lift.

The trade-off against the BAYROLL is about an inch more depth. Against the DeerValley compacts it costs more but adds chair height.

For a home where the seat height is the deciding factor, this is the one to buy.

HOROW T0338W ADA One-Piece ToiletCheck it on Amazon
2

BAYROLL One Piece Sleek Modern Toilet: Best for apartments and studio baths

BAYROLL One Piece Sleek Modern Toilet, one-piece toilets
8.8/10Our score
  • 25.5 in deep by 14.7 in wide
  • 17 in seat height
  • Dual flush 0.9/1.28 GPF
  • Fully skirted

The shortest skirted toilet here overall, with a quick-release seat and the lowest flush volume in the group.

See it on Amazon

Pros

  • Shortest depth in this list
  • Quick-release seat comes off for cleaning
  • Lowest GPF pair here

Cons

  • Round bowl gives less legroom than elongated bowls
  • Angle valve position needs checking before fitting

The BAYROLL One Piece Sleek Modern Toilet is the shortest fully skirted option here at 25.5 inches deep and 14.7 inches wide, so it fits apartments, studios and secondary baths where a full size toilet crowds the room. Its 17 inch seat height gives it chair height comfort in a smaller package.

The dual flush runs 0.9 GPF for liquids and 1.28 GPF for solids, the lowest water volumes in this roundup after the DeerValley 12 inch model. A 360 degree siphon flush rated at MAP 1000 grams does the waste removal work.

The quick-release soft-close seat lifts off in one motion for cleaning around the hinges.

The round bowl gives less legroom than the elongated bowls on the HOROW and St. Tropez.

BAYROLL also asks you to check the angle valve position before fitting: the horizontal distance from the valve to the waste pipe center needs to be more than 8 inches, or the valve should protrude less than 3 inches. If your plumbing sits tighter than that, the DeerValley compacts are safer.

Otherwise, this is the small bath pick with the modern skirted look. See our roundup of the best skirted toilets for more base designs.

BAYROLL One Piece Sleek Modern ToiletCheck it on Amazon
3

DeerValley Compact One-Piece Toilet, Standard Height: Best for the tightest floor space

DeerValley Compact One-Piece Toilet, Standard Height, one-piece toilets
8.7/10Our score
  • 24.6 in deep by 13 in wide
  • Standard 16 9/16 in seat height
  • Dual flush 1.1/1.6 GPF
  • Soft-close seat

The smallest footprint in the roundup, aimed at half baths and tight powder rooms where depth is the limit.

See it on Amazon

Pros

  • Shortest floor footprint here
  • Tool kit and wax ring included
  • Removable seat takes a bidet seat

Cons

  • Standard seat height is low for tall users
  • Round bowl only

The DeerValley Compact One-Piece Toilet with a standard seat height is the tightest fit on this list. Its 24.6 inch depth and 13 inch width let it sit in a half bath or under a low window without eating the floor.

The seat height is 16 9/16 inches, closer to a traditional bowl than the chair height models. That suits shorter adults and children better, and it keeps the overall cabinet height at 28 3/8 inches.

The dual flush runs 1.1/1.6 GPF with DeerValley claiming up to 16,500 gallons saved a year against older 3.5 GPF toilets.

DeerValley includes the wax ring, bolts, wrench and manual, and the fully skirted base wipes down in one pass. The PP seat is removable, so a bidet seat can go on if the dimensions line up.

The trade-off is height: taller users will notice the lower bowl next to the HOROW's 17.3 inch seat. It also comes round rather than elongated.

Buy it when floor depth is the hard limit. For tighter budgets, our best budget toilets picks cover the entry end.

DeerValley Compact One-Piece Toilet, Standard HeightCheck it on Amazon
4

St. Tropez Comfort Height One-Piece Toilet: Best for a classic elongated bowl

St. Tropez Comfort Height One-Piece Toilet, one-piece toilets
8.5/10Our score
  • 27 in deep by 15.12 in wide
  • Dual Vortex flush 1.1/1.6 GPF
  • Standard 12 in rough-in
  • Elongated bowl

A wider elongated bowl with a cyclonic vortex flush, best for a main bath where seating comfort matters more than depth.

See it on Amazon

Pros

  • Elongated bowl gives more seating room
  • Vortex rinse scrubs the bowl on each flush
  • Swiss Madison covers it for 1 year

Cons

  • Deepest footprint in this roundup
  • One-piece body weighs 109 lb

The St. Tropez Comfort Height One-Piece Toilet from Swiss Madison is the widest ceramic pick in this group.

Its elongated bowl and 27 inch depth give legs more room, so it suits a main family bath rather than a powder room.

The Vortex dual flush creates a cyclonic rinse that scrubs the bowl walls at 1.1 or 1.6 GPF. A non-porous, scratch-resistant ceramic shell holds up to daily use.

Swiss Madison builds it on a standard 12 inch rough-in, so it drops onto most existing floors without plumbing changes.

The trade-off is footprint. At 27 inches deep it's deeper than the HOROW and BAYROLL, and the one-piece body weighs 109 lb, so plan the lift.

The seat is plastic. If you want the same comfort in a smaller package, the HOROW sits shallower.

For more on this model, read the Casta Diva 17-inch one-piece toilet review and compare the two on seating depth before you decide. The St.

Tropez wins when the bowl, not the room, is the priority.

St. Tropez Comfort Height One-Piece ToiletCheck it on Amazon
5

Casta Diva 17-Inch Chair Height One-Piece Toilet: Best for a skirted modern look

Casta Diva 17-Inch Chair Height One-Piece Toilet, one-piece toilets
8.4/10Our score
  • 27.17 in deep by 14.37 in wide
  • 17 in seat height
  • Dual flush 1.1/1.6 GPF
  • Soft-close quick-release seat

A skirted chair height model with a MAP 1000 flush and soft-close seat, for buyers who want the modern look and easier cleaning.

See it on Amazon

Pros

  • Skirted base hides the trapway
  • Chair height seat
  • Quick-release seat for cleaning

Cons

  • Deeper than the HOROW and BAYROLL
  • White finish only in this pick

The Casta Diva 17-Inch Chair Height One-Piece Toilet is the model to buy if the skirted modern look is the whole point. Its base hides the trapway completely, so there's no exposed bend to catch dust.

The 17 inch seat height makes it comfortable for taller adults and seniors.

The siphon flush is rated at MAP 1000 grams, with a dual flush of 1.1/1.6 GPF that meets WaterSense criteria. A soft-close quick-release seat comes fitted, and the wax seal and hardware are in the box.

Casta Diva builds it on a standard 12 inch rough-in with two side holes for the floor bolts.

It measures 27.17 inches deep and 14.37 inches wide, so it's deeper than the HOROW and BAYROLL but still narrower than the St. Tropez.

That makes it a good middle pick for a narrow bath with room front to back. The trade-off against the HOROW is depth and price tier.

Against the KOHLER it costs less but carries a less known brand name. Buy it when you want chair height plus a base that's easy to wipe.

Casta Diva 17-Inch Chair Height One-Piece ToiletCheck it on Amazon
6

EPLO One Piece Smart Toilet Bidet: Best for hands-free use

EPLO One Piece Smart Toilet Bidet, one-piece toilets
8.3/10Our score
  • 27.16 in deep by 16.14 in wide
  • Foot sensor lid and flush
  • Foam shield
  • Warm air dryer

A smart one-piece with a bidet wash, heated seat and foot controls, for buyers who want hands-free operation and extra features.

See it on Amazon

Pros

  • Foot sensor opens and closes the lid and seat
  • Foam shield cuts splashback
  • Built-in tank pump handles low pressure

Cons

  • Widest pick here
  • More parts to maintain than a basic flush toilet

The EPLO One Piece Smart Toilet Bidet is the only smart model here. It adds a foot sensor that opens and closes both the lid and seat, a heated bidet seat with front, rear and pulsating wash modes, and a warm air dryer.

That makes it the pick for anyone who wants hands-free use at night or has trouble bending.

A built-in tank and booster pump keep the flush strong in low water pressure homes. The foam shield lays a dense layer over the bowl to cut splashback and waste adhesion.

A dual flush of 1.6 GPF full and 1.1 GPF half, plus ECO mode, keeps water and power use down.

It's the widest toilet in this group at 27.16 inches by 16.14 inches, and its 19.01 inch overall height is much lower than the ceramic models. More moving parts also mean more to maintain than a basic flush toilet.

Buy it for the features and the hands-free routine. Skip it if you want the simplest ceramic body you can fit.

EPLO One Piece Smart Toilet BidetCheck it on Amazon
7

WOODBRIDGEE One Piece Toilet with Soft Closing: Best for a quiet flush in a family bath

WOODBRIDGEE One Piece Toilet with Soft Closing, one-piece toilets
8.2/10Our score
  • 28.5 in deep by 14.5 in wide
  • Chair height 17 to 19 in seat
  • 1.28 GPF single flush
  • 1000 gram MaP score

A chair height model with a fully glazed siphon flush and a soft-close seat, for a busy family bath where quiet matters.

See it on Amazon

Pros

  • Chair height meets ADA standards
  • MaP score of 1000 grams
  • Soft-close seat with steel hinges

Cons

  • Longest depth in this roundup
  • Single flush uses more water than dual flush models

The WOODBRIDGEE One Piece Toilet with Soft Closing Seat suits a busy family bath where the flush runs several times an hour. Its chair height design meets ADA standards at 17 to 19 inches from floor to bowl rim, and the fully glazed siphon flush is rated at a 1000 gram MaP score.

The seat uses stainless steel hinges and lifts off for cleaning or tightening. A fully concealed trapway leaves no bends for dust, and the low-profile design hides the mounting holes and plastic caps.

WOODBRIDGEE includes the wax ring, floor bolts and a hand wrench for tightening in narrow spots. It's WaterSense certified and meets UPC and CSA standards.

The trade-off is depth. At 28.5 inches it's the longest toilet in this roundup, so it needs the most front clearance.

It's also a single flush at 1.28 GPF, so it uses more water per cycle than the dual flush HOROW. Buy it when quiet operation and a proven flush score matter more than water savings.

Measure your doorway and clearance before ordering.

WOODBRIDGEE One Piece Toilet with Soft ClosingCheck it on Amazon
8

DeerValley Compact One-Piece Toilet, 12-Inch Rough-In: Best for a low water bill

DeerValley Compact One-Piece Toilet, 12-Inch Rough-In, one-piece toilets
8.1/10Our score
  • 24.6 in deep by 12.99 in wide
  • Seat height near 17 in
  • Dual flush 0.8/1.28 GPF
  • Skirted trapway

A compact skirted toilet with the lowest dual flush volumes here, for buyers who want small footprint and water savings together.

See it on Amazon

Pros

  • Lowest GPF pair in this roundup
  • Near chair height seat
  • Skirted base wipes clean

Cons

  • Round bowl only
  • Soft-close seat is plastic

The DeerValley Compact One-Piece Toilet with a 12 inch rough-in is the water saver of the group. Its dual flush runs 0.8 GPF for liquid waste and 1.28 GPF for solid waste, the lowest pair in this roundup.

The near 17 inch seat height makes it easier on the knees than a standard low bowl.

It shares the compact 24.6 inch depth and 12.99 inch width of the other DeerValley, so it fits small bathrooms without compromise. The fully skirted trapway wipes clean in one pass, and the ceramic bowl is fired at 2246 F for stain resistance.

DeerValley includes the pre-installed soft-close seat, wax ring and floor bolts.

The bowl is round rather than elongated, and the seat is plastic. That's the trade-off against the HOROW and St.

Tropez for buyers who want more legroom.

The 12 inch rough-in suits most homes, but measure first if your floor bolts sit closer to the wall. Buy it when the water bill and the floor plan are both tight.

DeerValley Compact One-Piece Toilet, 12-Inch Rough-InCheck it on Amazon
9

KOHLER San Souci One-Piece Compact Elongated Toilet: Best for a hidden trapway and brand support

KOHLER San Souci One-Piece Compact Elongated Toilet, one-piece toilets
8.0/10Our score
  • Compact elongated bowl
  • Concealed trapway
  • 1.28 GPF
  • Comfort Height seating

A compact elongated Kohler with a concealed trapway and Clean Caps bolt covers, for buyers who want a low-profile look and a known brand.

See it on Amazon

Pros

  • Compact elongated bowl fits where round bowls do
  • Concealed trapway and low-profile bolt caps
  • Quiet-Close seat included

Cons

  • Single flush only
  • Highest price tier in this roundup

The KOHLER San Souci One-Piece Compact Elongated Toilet is the brand name pick. Its compact elongated bowl offers more seating comfort than a round bowl while taking up the same footprint as a round-front toilet.

A concealed trapway and Clean Caps low-profile bolt covers give it a low, clean profile.

The 1.28 GPF flush uses AquaPiston canister technology for a fast, effective cycle. A Quiet-Close seat comes included and closes gently.

KOHLER builds the body in vitreous china and glazes the trapway so waste resists buildup.

It's a single flush design at 1.28 GPF, so the dual flush models here save more water. It also sits at the top price tier in this roundup.

The payoff is the hidden trapway and the KOHLER name for parts and support. Buy it if a known brand and a concealed trapway matter more to you than the lowest water use.

It's the best fit for a guest bath that needs to look tidy and stay that way.

KOHLER San Souci One-Piece Compact Elongated ToiletCheck it on Amazon

How these one piece toilets were compared

We compared the nine one piece toilets by checking the specs each brand publishes, not by testing them in a bathroom. Our score weighs depth, seat height, flush type and water volume, plus the seat, base design and what comes in the box.

Depth carried the most weight, because it decides whether a toilet fits a small bath.

Seat height came next. We scored chair height models higher for shared and guest baths, where taller users and older adults set the pace.

Standard height models lost points for tall users but stayed in the list for tight rooms and kids.

Flush type split the group. Dual flush models scored higher on water use, while single flush models scored on simplicity.

Skirted bases earned a small bump for easier cleaning. We also weighed rough-in options: the HOROW's 10 inch and 12 inch versions fit more homes than a 12 inch only design.

Finally, we grouped the toilets by the need each one serves best, so the list doesn't just repeat the same pick nine times.

One piece toilets compared side by side

ModelBest forDepthSeat heightFlush
HOROW T0338WSmall baths with taller users26.6 in17.3 inDual 1.1/1.6 GPF
BAYROLL Sleek ModernApartments and studios25.5 in17 inDual 0.9/1.28 GPF
DeerValley Standard HeightTightest floor space24.61 in16 9/16 inDual 1.1/1.6 GPF
St. Tropez Comfort HeightClassic elongated bowl27 inComfort heightDual 1.1/1.6 GPF
Casta Diva 17-InchSkirted modern look27.17 in17 inDual 1.1/1.6 GPF
EPLO Smart BidetHands-free use27.16 inHeated bidet seatDual 1.1/1.6 GPF
WOODBRIDGEE Soft ClosingQuiet family bath28.5 in17 to 19 inSingle 1.28 GPF
DeerValley 12-Inch Rough-InLow water bill24.61 inNear 17 inDual 0.8/1.28 GPF
KOHLER San SouciHidden trapway and brand supportCompact elongatedComfort heightSingle 1.28 GPF
ProductBest forDepthSeat heightFlushOur score
HOROW T0338W ADA One-Piece Toiletsmall bathrooms with taller users26.6 in17.3 in1.1/1.6 GPF8.9
BAYROLL One Piece Sleek Modern Toiletapartments and studio baths25.5 in17 in0.9/1.28 GPF8.8
DeerValley Compact One-Piece Toilet, Standard Heightthe tightest floor space24.61 in16 9/16 in1.1/1.6 GPF8.7
St. Tropez Comfort Height One-Piece Toileta classic elongated bowl27 in31.18 in overall height1.1/1.6 GPF8.5
Casta Diva 17-Inch Chair Height One-Piece Toileta skirted modern look27.17 in17 in1.1/1.6 GPF8.4
EPLO One Piece Smart Toilet Bidethands-free use27.16 in1.1/1.6 GPF8.3
WOODBRIDGEE One Piece Toilet with Soft Closinga quiet flush in a family bath28.5 in17 to 19 in1.28 GPF8.2
DeerValley Compact One-Piece Toilet, 12-Inch Rough-Ina low water bill24.61 inNear 17 in0.8/1.28 GPF8.1
KOHLER San Souci One-Piece Compact Elongated Toileta hidden trapway and brand supportComfort Height1.28 GPF8.0

How much space does a one piece toilet really need?

Most one piece toilets need about 24 to 28 inches of depth from the wall and at least 15 inches of width. Leave 21 to 30 inches in front for knees and door swing.

The DeerValley compacts sit at the low end at 24.61 inches deep. The WOODBRIDGEE runs longest at 28.5 inches.

Width matters in a narrow bath. The BAYROLL and both DeerValley models are the narrowest here at 13 to 14.7 inches wide.

The EPLO smart toilet needs the most width at 16.14 inches.

Rough-in is the second measurement. That's the distance from the finished wall to the center of the floor bolts.

Most toilets here use a 12 inch rough-in. The HOROW T0338W also comes in a 10 inch version, which fits homes where the bolts sit closer to the wall.

What rough-in do I need?

Measure from the finished wall to the center of the floor bolts, then round to the nearest standard size. If the bolts sit about 12 inches from the wall, choose a 12 inch model.

If they sit closer to 10 inches, buy the 10 inch HOROW T0338W. Never guess: a wrong rough-in leaves a gap behind the tank or pushes the bowl into the room.

Is chair height or standard height better?

Chair height is better for most adults, especially taller users and anyone with knee or back trouble. It puts the seat 17 to 19 inches from the floor, so sitting down and standing up takes less effort.

Standard height sits near 15 to 16 inches and suits shorter users and children better.

The HOROW, BAYROLL, Casta Diva and WOODBRIDGEE all sit at chair height. The KOHLER lists a Comfort Height seat without a floor-to-seat figure.

The DeerValley standard height model sits at 16 9/16 inches, and the DeerValley 12 inch model sits near 17 inches.

Who should pick a standard height bowl?

Pick a standard height bowl if the main users are shorter adults or children, or if the room has a low window or cabinet above the toilet. The 16 9/16 inch DeerValley leaves more headroom under a window.

For a guest bath used mostly by kids, that height is easier to reach and safer to climb onto.

Does chair height fit under a standard vanity or window?

It depends on the height of the obstacle, not the toilet type. The EPLO smart toilet stands only 19.01 inches overall, lower than the ceramic one-piece models, but its seat sits on top.

A chair height toilet needs about 31 inches of clearance above the floor for the seat and lid. Check any window sill or cabinet overhang before you commit.

Which flush type saves more water?

Dual flush saves more water overall, because it uses a smaller volume for liquid waste. These models split between 0.9/1.28 GPF and 1.1/1.6 GPF pairs.

A single flush model uses its full volume every time. But a weak flush that needs two cycles wastes more than a strong single flush.

The lowest pair here is the DeerValley 12 inch model at 0.8/1.28 GPF. The BAYROLL runs 0.9/1.28 GPF.

The HOROW, Casta Diva, DeerValley standard height and St. Tropez all use 1.1/1.6 GPF.

The WOODBRIDGEE and KOHLER use 1.28 GPF every flush.

Is dual flush worth it?

Yes, for a busy household, because most flushes are for liquid waste and use the smaller volume. Over a year that adds up.

The trade-off is more parts inside the tank. A single flush model like the WOODBRIDGEE has fewer things to go wrong and still meets WaterSense standards at 1.28 GPF.

What MaP score should I look for?

Aim for a MaP score of 1000 grams. That's the top score in the standard test and means the toilet clears 2.2 pounds of solid waste in one flush.

The HOROW, BAYROLL, Casta Diva and WOODBRIDGEE all carry a 1000 gram score. A lower score risks a second flush.

Do one piece toilets fit a small bathroom better than two piece models?

Yes, in most small baths. A one piece toilet has no separate tank to bolt on, so the profile is lower and tighter against the wall.

The depth savings aren't huge, but the smooth shell is easier to wipe and there's no seam to leak.

The real advantage in a small room is the base. A skirted one-piece like the BAYROLL or Casta Diva hides the trapway, so the floor around the toilet is easier to sweep and mop.

A two piece model leaves a gap between tank and bowl where dust collects. One piece models are heavier to lift and cost more, which is the price you pay for the cleaner look.

If your main concern is budget rather than space, a two piece may still make sense.

Are one piece toilets harder to install?

They're harder to lift, not harder to fit. The body arrives as one unit, so two people should set it on the flange.

The HOROW's large side access openings make the floor bolts easier to reach. Both DeerValley models include the wax ring and bolts.

A plumber is still worth it if the flange is damaged or the floor isn't level.

What about a skirted base?

A skirted base is a one piece toilet with the trapway hidden behind smooth ceramic. It looks cleaner and wipes down in one pass.

The BAYROLL, Casta Diva and both DeerValley models use one. The KOHLER San Souci uses a concealed trapway on a compact elongated body.

The catch is fit: the BAYROLL needs the angle valve more than 8 inches from the waste pipe center, or the valve should protrude less than 3 inches. Check your plumbing before you buy a skirted model.

Which one piece toilet fits your bathroom?

The HOROW T0338W is the best one piece toilet for most homes because it combines a 26.6 inch depth with a 17.3 inch chair height seat and dual flush water savings. Pick the BAYROLL if your bath is an apartment or studio and you need the shortest fully skirted body.

Pick the DeerValley compact models when floor depth is the hard limit.

Choose the St. Tropez when the bowl size matters more than the room.

The Casta Diva wins when you want chair height plus a skirted base. The EPLO smart bidet is for hands-free use and extra features.

The WOODBRIDGEE suits a quiet family bath, the DeerValley 12 inch model saves the most water, and the KOHLER San Souci gives you a concealed trapway from a known brand. Measure your rough-in and depth first, then buy the model that fits both.

If you're still weighing one piece against two piece, our are one piece or two piece toilets better guide has the full comparison. For base designs and easy cleaning, see our best skirted toilets roundup.

And if cost is the deciding factor, our best budget toilets list covers the value end. The Casta Diva 17-inch one-piece toilet review goes deeper on the chair height skirted pick.

Our top 3 picks at a glance

  1. 1 HOROW T0338W ADA One-Piece Toilet
    Best for small bathrooms with taller users

    HOROW T0338W ADA One-Piece Toilet

    8.9/10 our score

    See it on Amazon
  2. 2 BAYROLL One Piece Sleek Modern Toilet
    Best for apartments and studio baths

    BAYROLL One Piece Sleek Modern Toilet

    8.8/10 our score

    See it on Amazon
  3. 3 DeerValley Compact One-Piece Toilet, Standard Height
    Best for the tightest floor space

    DeerValley Compact One-Piece Toilet, Standard Height

    8.7/10 our score

    See it on Amazon

Frequently asked questions

What is the best one piece toilet for most homes?

The HOROW T0338W is the best one piece toilet for most homes. Its 17.3 inch chair height and 26.6 inch depth suit small baths and taller users.

Pick the BAYROLL for the shortest fully skirted body or the DeerValley standard height model for the tightest footprint.

Do these one-piece toilets save water?

The dual flush models use 1.1 GPF for liquid waste and 1.6 GPF for solid waste. The BAYROLL and DeerValley 12-inch rough-in model go lower at 0.9/1.28 GPF and 0.8/1.28 GPF.

The single flush picks use 1.28 GPF every time, which still counts as high efficiency.

Can a one-piece toilet replace an old two-piece one?

Yes, as long as the rough-in matches and the floor flange is sound. Measure from the finished wall to the center of the floor bolts first.

The HOROW comes in 10 inch and 12 inch rough-in versions, and most other picks here use a standard 12 inch rough-in.