Best 1.5 to 1.6 GPF Toilets in 2026: 14 Picks Compared
The TOTO Drake two-piece elongated toilet is our top pick for its chair height, Tornado flush system, and CEFIONTECT glaze as listed by the seller. We chose the other picks by comparing published specifications from a pool of 36 toilets that meet the 1.5 to 1.6 GPF range. Our selections span different configurations, including one-piece, two-piece, dual flush, round and elongated bowls, standard and chair heights, compact and wall-hung designs, and models with integrated bidets. Prices shown are live and can change; we have not tested any of these units, so this guide relies on maker information and listed specs.
14 picks from 13 toilets that match this guide with a price we can quote today, made by 26 makers. The prices below are current and each carries its read time.
Quick picks
The best fit for you
- For small bathrooms: If you have a tight space, look for a compact model with a 10 or 12 inch rough-in. The DeerValley Compact One Piece offers a small footprint and a dual flush in a standard height. See pick 2
- For tall users and seniors: Chair height toilets are easier to sit down and stand up from. The HOROW 19 inch extra tall model is specifically built for seniors and tall adults. See pick 4
- For a modern look: If you want a statement piece, consider the Jastoeny Black Gold one piece or the Swiss Madison Concorde square toilet. Both add a distinctive style to a bathroom. See pick 9
- For a bidet built in: An integrated bidet saves space and adds convenience. The TOTO Drake WASHLET+ combines a chair height toilet with a bidet seat. See pick 6
Our 14 picks
1 Best overall
TOTO Drake Two-Piece Elongated 1.6 GPF Universal Height TORNADO FLUSH
- Pieces
- Two-piece
- Bowl shape
- Elongated
- Gallons per flush
- 1.5 to 1.6 GPF
- Seat height
- Chair height
The TOTO Drake offers a chair height, an elongated bowl, and a two-piece design. It also includes the Tornado flush and CEFIONTECT glaze as listed by the seller, making it a well rounded choice among the 1.6 GPF toilets in this list.
Pros
- Elongated chair height bowl
- Tornado flush system as stated by the seller
- CEFIONTECT anti stain surface as stated by the seller
- Two-piece construction allows for easier bowl replacement
Cons
- Two-piece design has a visible seam
- Seat is not included (not stated by the seller)
Good fit if
- People who want a reliable chair height toilet from a major brand
- Bathrooms with enough space for an elongated bowl
Skip if
- You need a one-piece toilet for easier cleaning
- You prefer a round bowl to save space
Verdict: The TOTO Drake is a solid all around pick with useful features and a respected name.
2 Best for small bathrooms
DeerValley Compact One Piece Toilet Standard Seat Height for Small
- Pieces
- One-piece
- Flush
- Dual flush
- Gallons per flush
- 1.5 to 1.6 GPF
- Seat height
- Standard height
- Rough-in
- 10 in
- Compact
- Yes
$215.00 (as of 10/14/2026 22:54 PDT - Details)
This DeerValley model is labeled compact and has a 10 inch rough-in, which fits many tight spaces. It is one piece, dual flush, and standard height, making it a practical choice for smaller bathrooms.
Pros
- Compact footprint for tight spaces
- 10 inch rough-in
- One-piece design is easy to clean
- Dual flush with 1.1 and 1.6 GPF options
Cons
- Standard height may be too low for some users
- Round bowl is not specified by the seller, so measure carefully
Good fit if
- Small or half baths with limited floor area
- People who prefer a standard seat height
Skip if
- You need a chair height toilet for accessibility
- You have a 12 inch rough-in and want a standard install
Verdict: This DeerValley is a space saving option with dual flush and a one-piece body.
3 Best for 14-inch rough-in
St. Tropez One-Piece 14" Rough-in 1.1/1.6 GPF Dual Top Flush Elongated
- Pieces
- One-piece
- Bowl shape
- Elongated
- Flush
- Dual flush
- Gallons per flush
- 1.5 to 1.6 GPF
- Rough-in
- 14 in
Most toilets need a 12 inch or 10 inch rough-in, so a 14 inch model is rare. The St. Tropez by Swiss Madison is a one-piece dual flush elongated toilet that fits this unusual spacing.
Pros
- 14 inch rough-in for non-standard plumbing
- One-piece design
- Dual flush with 1.1 and 1.6 GPF
- Elongated bowl
Cons
- Limited availability in this rough-in size
- Glossy white finish may show water spots more easily
Good fit if
- Homes with a 14 inch rough-in measurement
- People who want a one-piece, dual flush toilet
Skip if
- You have a standard 12 inch rough-in
- You need a round bowl to save space
Verdict: For a 14 inch rough-in, this St. Tropez is a practical and well-configured choice.
4 Best for tall users
HOROW 19" Extra Tall Toilet for Seniors & Tall Adults
- Pieces
- Two-piece
- Bowl shape
- Elongated
- Flush
- Dual flush
- Gallons per flush
- 1.5 to 1.6 GPF
- Seat height
- Extra tall
- Rough-in
- 12 in
With a 19 inch height, this HOROW is extra tall, making it easier for seniors and tall adults to stand up. It is a two-piece elongated dual flush model with a 12 inch rough-in.
Pros
- Extra tall height for easier standing
- Elongated bowl
- Dual flush with 1.1 and 1.6 GPF
- 12 inch rough-in is common
Cons
- Extra tall may be too high for shorter users
- Two-piece design may have a visible seam
Good fit if
- Tall adults or people with mobility issues
- Bathrooms with a standard 12 inch rough-in
Skip if
- You are below average height and prefer a lower seat
- You want a one-piece toilet for easier cleaning
Verdict: The HOROW extra tall is a thoughtful choice for those who need a higher seating position.
5 Best wall-hung
Round Bowl Wall Mount Toilet Combo Set
- Bowl shape
- Round
- Flush
- Dual flush
- Gallons per flush
- 1.5 to 1.6 GPF
- Wall-hung
- Yes
- Compact
- Yes
This Los Flexi toilet hangs on the wall, freeing up floor space and simplifying floor cleaning. It includes a concealed tank and carrier, and it uses a round bowl with dual flush.
Pros
- Wall-hung design saves floor space
- Concealed tank and carrier included
- Dual flush with 1.1 and 1.6 GPF
- Round bowl for smaller areas
Cons
- Installation requires a carrier system and special wall framing
- Round bowl provides less seating area than elongated
Good fit if
- Contemporary bathrooms where a floating toilet is desired
- People who want an easier floor cleaning path
Skip if
- You have a standard floor mount setup and do not want extra construction
- You prefer an elongated bowl
Verdict: The Los Flexi wall-hung toilet is a distinctive and practical option for modern spaces.
6 Best with bidet
TOTO® Drake® WASHLET®+ Two-Piece Elongated 1.6 GPF Universal Height
- Pieces
- Two-piece
- Bowl shape
- Elongated
- Gallons per flush
- 1.5 to 1.6 GPF
- Seat height
- Chair height
- Rough-in
- 10 in
- Bidet built in or included
- Yes
This TOTO Drake comes with an S7A bidet seat, combining a chair height elongated toilet and a bidet in one unit. It uses a 10 inch rough-in and has the Tornado flush system.
Pros
- Integrated bidet seat for hygiene
- Chair height and elongated bowl
- Tornado flush system as stated by the seller
- Two-piece design with separate bidet seat
Cons
- 10 inch rough-in may not fit all plumbing
- Higher cost compared to models without a bidet
Good fit if
- People who want a built-in bidet without a separate seat
- Bathrooms with a 10 inch rough-in and space for an elongated bowl
Skip if
- You already have a bidet seat or prefer a separate one
- You have a 12 inch rough-in and do not want an adapter
Verdict: The TOTO Drake WASHLET+ is a convenient all-in-one solution for those who want a bidet.
7 Best round bowl
PROFLO PFJRC010M Jerritt 1.6 GPF Two Piece Round Toilet
- Pieces
- Two-piece
- Bowl shape
- Round
- Gallons per flush
- 1.5 to 1.6 GPF
- Seat height
- Chair height
For spaces where length matters, this PROFLO Jerritt is a two-piece round bowl toilet with a chair height and a left-hand lever. It is listed as ADA compliant in the product name.
Pros
- Round bowl saves up to 2 inches of depth
- Chair height for accessibility
- Left-hand trip lever
- ADA compliant as stated in the product name
Cons
- Round bowl offers less seating area
- Two-piece design
- Seat is not included (not stated by the seller)
Good fit if
- Small or narrow bathrooms where length is limited
- People who need a chair height and ADA compliant toilet
Skip if
- You prefer an elongated bowl for comfort
- You need a right-hand lever or a one-piece design
Verdict: The PROFLO Jerritt round is a compact and accessible option for smaller spaces.
8 Best for seniors and ADA
HOROW 17 Inch Comfort Height Toilet
- Pieces
- Two-piece
- Bowl shape
- Elongated
- Flush
- Dual flush
- Gallons per flush
- 1.5 to 1.6 GPF
- Seat height
- Chair height
- Rough-in
- 12 in
The HOROW 17 inch comfort height toilet is labeled ADA chair height and comes as a two-piece elongated dual flush with a 12 inch rough-in. It is a practical choice for elderly users.
Pros
- ADA chair height for easier sit and stand
- Elongated bowl
- Dual flush with 1.1 and 1.6 GPF
- 12 inch rough-in is common
Cons
- Two-piece design may have a seam
- No soft-close seat stated by the seller
Good fit if
- Seniors or people with mobility issues
- Bathrooms with a 12 inch rough-in and space for an elongated bowl
Skip if
- You need an extra tall model beyond 17 inches
- You prefer a one-piece toilet
Verdict: The HOROW comfort height is a reliable and accessible choice for older users.
9 Best style
Jastoeny Compact One-Piece Elongated Toilet
- Pieces
- One-piece
- Bowl shape
- Elongated
- Flush
- Dual flush
- Gallons per flush
- 1.5 to 1.6 GPF
- Compact
- Yes
The Jastoeny compact one-piece toilet stands out with a black and gold finish. It is elongated, dual flush, and has a compact footprint, making it a visually distinctive pick.
Pros
- Black and gold finish for a distinctive look
- Compact one-piece design
- Elongated bowl
- Dual flush with 1.1 and 1.6 GPF
Cons
- Dark finish may require more frequent cleaning to hide water spots
- Compact size may reduce seat area
Good fit if
- People who want a bold aesthetic in a small bathroom
- Those who like a one-piece, dual flush toilet
Skip if
- You prefer a traditional white toilet
- You need a standard 12 inch rough-in (rough-in not stated by the seller)
Verdict: The Jastoeny Black Gold is a stylish and functional compact toilet.
10 Best one-piece
American Standard Champion 4 One Piece Elongated Toilet
- Pieces
- One-piece
- Bowl shape
- Elongated
- Gallons per flush
- 1.5 to 1.6 GPF
- Seat height
- Chair height
$599.95 (as of 10/14/2026 22:29 PDT - Details)
The American Standard Champion 4 is a one-piece elongated toilet with a 1.6 GPF flush. Its one-piece construction simplifies cleaning and reduces crevices compared to two-piece models.
Pros
- One-piece design for easier cleaning
- Elongated bowl
- 1.6 GPF flush
- No visible tank-to-bowl seam
Cons
- Heavier and harder to lift during installation
- No dual flush mode
Good fit if
- People who prefer the seamless look of a one-piece toilet
- Bathrooms with enough space for an elongated bowl
Skip if
- You want a dual flush option to save water
- You need a compact or small footprint
Verdict: The Champion 4 is a dependable one-piece toilet from a well-known brand.
11 Best right-hand lever
Kohler KOH3493-RA-0 Highline 1.6 GPF Two-Piece Elongated Comfort Height
- Pieces
- Two-piece
- Bowl shape
- Elongated
- Gallons per flush
- 1.5 to 1.6 GPF
- Seat height
- Chair height
The Kohler Highline includes a right-hand trip lever, which is less common than left-hand models. It is a two-piece, elongated, chair height toilet with a 1.6 GPF flush.
Pros
- Right-hand lever for those who prefer that side
- Chair height
- Elongated bowl
- Two-piece design
Cons
- Seat is not included (less seat as stated in the name)
- No dual flush mode
Good fit if
- Right-handed users who want a lever on the right
- People who need a chair height toilet from a major brand
Skip if
- You prefer a left-hand lever or a dual flush
- You want a one-piece toilet
Verdict: The Kohler Highline is a well-made two-piece with a useful lever position.
12 Best square bowl
Swiss Madison SM-1T278
- Pieces
- One-piece
- Flush
- Dual flush
- Gallons per flush
- 1.5 to 1.6 GPF
- Rough-in
- 10 in
The Swiss Madison Concorde has a square bowl, a distinctive shape that sets it apart from rounded or elongated toilets. It is a one-piece dual flush model with a 10 inch rough-in.
Pros
- Square bowl design for a modern look
- One-piece construction
- Dual flush with 1.1 and 1.6 GPF
- 10 inch rough-in
Cons
- Square seating may feel less ergonomic to some
- 10 inch rough-in limits compatibility
Good fit if
- Design-forward bathrooms that want a geometric look
- Homes with a 10 inch rough-in
Skip if
- You prefer a traditional rounded bowl
- You need a 12 inch rough-in
Verdict: The Concorde is a unique choice for those who want a square bowl and modern style.
13 Best chair height one-piece
DeerValley Symmetry One Piece Toilet
- Pieces
- One-piece
- Bowl shape
- Elongated
- Flush
- Dual flush
- Gallons per flush
- 1.5 to 1.6 GPF
- Seat height
- Chair height
$199.00 (as of 10/14/2026 22:54 PDT - Details)
The DeerValley Symmetry is a one-piece elongated toilet with a chair height and dual flush. It combines the ease of cleaning a one-piece with a more accessible seating height.
Pros
- Chair height for easier use
- One-piece design
- Elongated bowl
- Dual flush with 1.1 and 1.6 GPF
Cons
- No rough-in specified, measure before buying
- May be heavier than two-piece models
Good fit if
- People who want a one-piece toilet with a higher seat
- Bathrooms that can accommodate an elongated bowl
Skip if
- You need a compact or small footprint
- You require a specific rough-in not listed
Verdict: The Symmetry offers a good balance of style, height, and easy maintenance.
14 Best extra tall round
HOROW 17 Inch High Round Toilet with ADA Chair Height
- Pieces
- Two-piece
- Bowl shape
- Round
- Flush
- Dual flush
- Gallons per flush
- 1.5 to 1.6 GPF
- Seat height
- Extra tall
This HOROW model is a round bowl toilet with an extra tall height, making it a space-saving option that still offers a higher seat. It is a two-piece dual flush with a 17 inch height.
Pros
- Extra tall height for easier standing
- Round bowl saves depth
- Dual flush with 1.1 and 1.6 GPF
- Two-piece design
Cons
- Round bowl offers less seating area than elongated
- No rough-in specified, check your measurement
Good fit if
- Small bathrooms that need a tall toilet
- People who prefer a round bowl but need a higher seat
Skip if
- You want an elongated bowl for more comfort
- You need a 12 inch rough-in without specification
Verdict: The HOROW 17 inch round is a smart pick for compact spaces that still need extra height.
Specifications side by side
| # | Toilet | Pieces | Bowl shape | Flush | Gallons per flush | Seat height | Rough-in |
|---|---|---|---|---|---|---|---|
| 1 | TOTO Drake Two-Piece Elongated 1.6 GPF Universal Height TORNADO FLUSH | Two-piece | Elongated | not stated | 1.5 to 1.6 GPF | Chair height | not stated |
| 2 | DeerValley Compact One Piece Toilet Standard Seat Height for Small | One-piece | not stated | Dual flush | 1.5 to 1.6 GPF | Standard height | 10 in |
| 3 | St. Tropez One-Piece 14" Rough-in 1.1/1.6 GPF Dual Top Flush Elongated | One-piece | Elongated | Dual flush | 1.5 to 1.6 GPF | not stated | 14 in |
| 4 | HOROW 19" Extra Tall Toilet for Seniors & Tall Adults | Two-piece | Elongated | Dual flush | 1.5 to 1.6 GPF | Extra tall | 12 in |
| 5 | Round Bowl Wall Mount Toilet Combo Set | not stated | Round | Dual flush | 1.5 to 1.6 GPF | not stated | not stated |
| 6 | TOTO® Drake® WASHLET®+ Two-Piece Elongated 1.6 GPF Universal Height | Two-piece | Elongated | not stated | 1.5 to 1.6 GPF | Chair height | 10 in |
| 7 | PROFLO PFJRC010M Jerritt 1.6 GPF Two Piece Round Toilet | Two-piece | Round | not stated | 1.5 to 1.6 GPF | Chair height | not stated |
| 8 | HOROW 17 Inch Comfort Height Toilet | Two-piece | Elongated | Dual flush | 1.5 to 1.6 GPF | Chair height | 12 in |
| 9 | Jastoeny Compact One-Piece Elongated Toilet | One-piece | Elongated | Dual flush | 1.5 to 1.6 GPF | not stated | not stated |
| 10 | American Standard Champion 4 One Piece Elongated Toilet | One-piece | Elongated | not stated | 1.5 to 1.6 GPF | Chair height | not stated |
| 11 | Kohler KOH3493-RA-0 Highline 1.6 GPF Two-Piece Elongated Comfort Height | Two-piece | Elongated | not stated | 1.5 to 1.6 GPF | Chair height | not stated |
| 12 | Swiss Madison SM-1T278 | One-piece | not stated | Dual flush | 1.5 to 1.6 GPF | not stated | 10 in |
| 13 | DeerValley Symmetry One Piece Toilet | One-piece | Elongated | Dual flush | 1.5 to 1.6 GPF | Chair height | not stated |
| 14 | HOROW 17 Inch High Round Toilet with ADA Chair Height | Two-piece | Round | Dual flush | 1.5 to 1.6 GPF | Extra tall | not stated |
How the picks were chosen
We started with a pool of 36 toilets that met the 1.5 to 1.6 GPF specification. We compared each model's stated specs, including bowl shape, piece design, flush type, height, rough-in size, and any special features. We removed near-duplicate models and focused on models from well-known makers and on new units. Prices shown on the page are live and may change. We have not tested any of these units; our selections are based on the maker's published information and the specifications listed by the seller.
Picking the right one for you
What does 1.5 to 1.6 GPF mean?
GPF stands for gallons per flush, the amount of water a toilet uses for each flush. The federal standard for new toilets is 1.6 GPF, so any model in this range meets the minimum legal requirement. Some dual-flush models use 1.1 GPF for liquid waste and 1.6 GPF for solid waste. The Environmental Protection Agency (EPA) notes that toilets using 1.28 GPF or less can earn the WaterSense label, but 1.6 GPF is still widely installed and completely acceptable.
Round vs. elongated bowl
The bowl shape affects both comfort and the space the toilet occupies. Round bowls are typically about 2 inches shorter from the wall to the front, which can help in tight bathrooms. Elongated bowls offer more seating area and are often considered more comfortable, but they require about 2 inches more clearance. Measure your bathroom's depth to ensure the bowl will fit, especially if you have a door that swings into the room.
Standard, chair, or extra tall height
Toilet seat heights generally fall into three categories. Standard height is usually around 15 inches from the floor to the seat. Chair height, also called comfort height, is typically 16 to 17 inches, which is closer to a standard chair and is easier for many adults to use. Extra tall models go beyond 17 inches and are designed for very tall users or those who need extra assistance. The Americans with Disabilities Act (ADA) recommends a seat height of 17 to 19 inches for accessible design, but your own comfort and physical needs should guide your choice.
One-piece vs. two-piece construction
One-piece toilets have the tank and bowl molded as a single unit, which eliminates a seam that can collect dirt and makes cleaning easier. They are often heavier and may cost more. Two-piece toilets have a separate tank and bowl, which are bolted together. They are generally lighter and easier to install, and replacement parts are widely available. Your preference may depend on how much you value ease of cleaning versus ease of installation.
Flush options: single vs. dual
Single-flush toilets use the same amount of water for every flush, typically 1.6 GPF in this range. Dual-flush toilets give you a lower-volume flush (often 1.1 GPF) for liquid waste and a higher-volume flush (usually 1.6 GPF) for solid waste. Dual flush can save water over time, but some users prefer the simplicity of a single lever. Some models feature advanced flush systems, such as TOTO's Tornado flush, which uses two nozzles to create a centrifugal wash. These systems are described by the manufacturer.
Measuring your rough-in distance
The rough-in is the distance from the finished wall behind the toilet to the center of the floor drain. Most toilets are designed for a 12-inch rough-in, but 10-inch and 14-inch options exist. To measure, remove the toilet base plate and measure from the wall to the center of the flange. This measurement is critical because it determines which toilets will fit without requiring a change in the plumbing. When in doubt, consult a plumber before ordering.
Questions
What is the difference between 1.5 and 1.6 GPF?
GPF stands for gallons per flush. A 1.5 GPF toilet uses 1.5 gallons per flush, while a 1.6 GPF uses 1.6 gallons. The difference is small, and both are within the federal standard of 1.6 GPF maximum. Some dual-flush models use a reduced flush of 1.1 gallons for liquid waste and a full flush of 1.6 gallons. WaterSense labeled toilets use 1.28 GPF or less, which is more efficient, but 1.6 GPF is still a common and acceptable choice.
Are 1.6 GPF toilets still allowed under federal law?
Yes. The federal standard for residential toilets is 1.6 gallons per flush. Toilets that use 1.6 GPF or less meet the requirement. Many newer toilets are designed to use 1.28 GPF or less to earn the WaterSense label, but 1.6 GPF is not illegal or obsolete. You can still buy and install a 1.6 GPF toilet today.
How do I measure the rough-in distance for my toilet?
The rough-in is the distance from the finished wall behind the toilet to the center of the floor drain flange. To measure, remove the toilet base and measure from the wall to the center of the flange with a tape measure. Most toilets are designed for a 12-inch rough-in, but 10-inch and 14-inch models are also available. If you are not sure, consult a plumber to avoid ordering the wrong size.
What does ADA height mean for a toilet?
ADA height refers to the seat height recommended by the Americans with Disabilities Act. According to the 2010 ADA Standards, a toilet seat should be 17 to 19 inches from the finished floor for accessible design. This is typically higher than a standard toilet, which is about 15 inches. Toilets that are labeled "chair height" or "comfort height" usually fall in the ADA range and are easier to sit down on and stand up from.
Is a dual flush toilet worth it?
A dual flush toilet offers two flushing options: a reduced flush for liquid waste and a full flush for solid waste. The reduced flush typically uses about 1.1 gallons, while the full flush uses 1.6 gallons or less. This can save water compared to a single-flush toilet that always uses the same amount. Dual flush is especially useful in households where water conservation is a priority, but some people find the two-button system more complex than a simple lever.
Revision notes
- : First published.