Bath Picker

Comfort Height, ADA and 21-Inch Tall Toilets: Which Height Do You Need?

Standard vs comfort-height vs extra-tall toilets explained, who each suits, and current options from ELEMAZ (Simple Project) and HOROW – from $269 tall toilets to ADA-height smart toilets.

By Vincent · Published · Prices checked against official sources November 4, 2026 · How we review

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On this page
  1. Toilet heights explained
  2. Extra-tall 21-inch toilets
  3. Comfort / ADA height toilets
  4. Before you buy
  5. Key takeaways
  6. Frequently asked questions

Short answer: For most homes, a comfort-height (ADA) toilet – seat 17 to 19 inches off the floor – is the best all-round choice. Go to an extra-tall 21-inch toilet if the main user is very tall or finds standing up hard. Tall toilets are cheap: ELEMAZ 21” models start at $269 at Simple Project. If you also want a bidet, HOROW’s ADA-height T30-NE ($539, non-electric) and T33 ($799, smart) are the lowest-priced we track.

Prices are from Simple Project’s and HOROW’s US stores on November 4, 2026. Heights are as the makers list them; we haven’t measured them.

Toilet heights explained

TypeSeat heightWho it suits
StandardLower than ADA (often around 15 inches)Children, shorter adults
Comfort / ADA / chair height17–19 inches (ADA standard)Most adults, older people, shared bathrooms
Extra tallAbout 21 inchesVery tall users, people with knee, hip or mobility problems

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Makers measure differently – some quote bowl height, some seat height. If a few inches matter, check the spec drawing on the product page.

Bar chart: tall and ADA-height toilets from $269 (ELEMAZ 21-inch) to $1,299 (HOROW T38P)

Extra-tall 21-inch toilets

ModelPriceNotes from the maker
ELEMAZ 21” single flush (Simple Project)$269Two-piece, elongated bowl
ELEMAZ 21” dual flush$339WaterSense, MaP 1,000 g, slow-close seat
ELEMAZ 21” round bowl$339Round bowl for smaller rooms, 12-inch rough-in
ELEMAZ 21” skirted$349.99Skirted (easier to clean outside), 12-inch rough-in
HOROW HWTT-E03S 21”$379Two-piece, 1.28 GPF single flush

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See the ELEMAZ 21-inch dual-flush toilet

Comfort / ADA height toilets

ModelPriceNotes from the maker
ELEMAZ 19” rear outlet$279Rear (wall) discharge – not for a floor drain
HOROW HR-T0357W 19”$429One-piece, ADA chair height, 1.0/1.27 GPF dual flush
HOROW T30-NE$539Non-electric bidet toilet, ADA height, 10-inch rough-in
HOROW T33$799Smart toilet, ADA comfort height, tank + pump, UVC
HOROW T38P$1,299Smart toilet, ADA comfort height, foam shield

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See the HOROW T33 ADA smart toilet

Before you buy

  1. Measure the user, not just the room: sitting with feet flat on the floor and knees level or slightly below the hips is the goal.
  2. Check the rough-in: most models above are for a 12-inch rough-in; the T30-NE is for 10 inches. See 10 vs 12-inch rough-in.
  3. Check the outlet: the ELEMAZ 19” is a rear-outlet toilet that drains into the wall.
  4. Consider grab bars: height helps, but a grab bar or toilet safety rail adds support for standing up.

ELEMAZ 21" Extra Tall Toilet (dual flush)

Lowest-cost tall pick

Best for: Tall users and anyone who struggles to stand from a standard toilet

Pros
  • 21-inch height
  • WaterSense dual flush
  • Under $350
Cons
  • Too high for children and shorter adults
  • No bidet
Visit Simple Project

Want comfort height plus a bidet? Compare smart toilet vs bidet seat and our HOROW T38 vs T38P comparison.

Key takeaways

  • The ADA standard puts the top of the toilet seat 17 to 19 inches above the floor; 'comfort height' and 'chair height' usually mean a seat in that range.
  • Extra-tall toilets go further – ELEMAZ and HOROW both sell 21-inch models – for very tall users or people who struggle to stand up.
  • Tall toilets start at $269 (ELEMAZ 21" single flush at Simple Project); ADA-height smart toilets with a bidet start at $539 non-electric (HOROW T30-NE) and $799 electric (HOROW T33).
  • Children and shorter adults can find a 21-inch seat too high – feet should rest flat on the floor.
  • Measure your rough-in before ordering: most tall models here are 12-inch, and the ELEMAZ 19" is a rear-outlet (wall) model.

Frequently asked questions

What is the ADA toilet height?

Under the 2010 ADA Standards, the top of the toilet seat should be 17 to 19 inches above the floor. Makers often call toilets in this range 'ADA height', 'comfort height' or 'chair height'.

Is a 21-inch toilet too tall?

For many tall adults and people who find standing up hard, no – that's who 21-inch models are for. For children and shorter adults it can be too high, because their feet may not rest flat on the floor. If several people share the bathroom, a 17–19 inch seat is the safer middle ground.

Can I get a smart toilet with a comfort-height seat?

Yes. HOROW lists the T33 ($799), T38P ($1,299) and T39 ($1,399) as ADA comfort height, and EPLO lists 17-inch-plus seat heights on several models. Non-electric bidet toilets such as HOROW's T30-NE ($539) also use ADA height.

Sources