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10 Best One Piece Toilets 2026 in the United States

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Our technology thoroughly searches through the online shopping world, reviewing hundreds of sites. We then process and analyze this information, updating in real-time to bring you the latest top-rated products. This way, you always get the best and most current options available.

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Our Top Picks

#1

Winner

TOTO® WASHLET®+ Nexus® One-Piece Elongated 1.28 GPF Toilet with S7A Contemporary Bidet Seat, Cotton White - MW6424736CEFG#01

The TOTO WASHLET+ Nexus One-Piece Toilet is an elongated-shaped toilet, which many find more comfortable compared to round bowl designs. The integrated WASHLET+ bidet seat offers a variety of luxurious features including warm water washing, an auto open/close lid, a heated seat, and a warm air dryer. These features can greatly enhance the user experience with customizable settings for temperature and pressure.

Furthermore, the EWATER+ system mists the wand and toilet bowl, helping to keep the unit clean without harsh chemicals. The toilet uses a 1.28 gallons per flush (GPF) system, making it water-efficient and eco-friendly. At 27 inches in height, it is a comfortable height for most users, and its sleek design hides water supply and power cords for a cleaner look.

The toilet and bidet are made from a combination of ceramic and plastic materials, finished in a cotton white color, which can easily fit into most bathroom decors. One potential downside is its relatively high weight at 116 pounds, which might make installation more challenging. Additionally, the bidet seat is made of plastic, which may not feel as premium as other materials. The contemporary design and array of features make it a great choice for those looking to upgrade their bathroom experience with advanced convenience and cleanliness features.

#2

Casta Diva Elongated One Piece Toilet with 17" ADA Comfort Chair Height Seat Compact Toilet for Bathroom Dual Flush 1.1/1.6GPF, 12'' Rough-in, High Efficiency Flush, Standard White Bowl

Rating
9.7
Height
Flushing System
Water Consumption

Most important from
287 reviews

Height
The 17-inch ADA comfort height makes sitting and standing significantly easier, especially benefiting taller individuals and those with mobility challenges.
Flushing System
The powerful siphon jet flush consistently clears the bowl effectively every time, ensuring reliability.
Water Consumption
The dual flush system efficiently conserves water by offering 1.1 gallons for light flushes and 1.6 gallons for heavier flushes without compromising flush power.
Material and Finish
The sleek one-piece, skirted design not only adds a modern look but also simplifies cleaning compared to traditional two-piece toilets.
Seat Type
The seat is comfortable and durable, enhancing the overall user experience.

The Casta Diva Elongated One-Piece Toilet is a compact, modern choice designed to blend style with functionality. Its one-piece, skirted design makes cleaning easier and helps prevent leaks, which is a real plus in bathroom maintenance. The elongated bowl shape offers more seating comfort compared to round bowls, and the 17-inch ADA comfort chair height suits most adults, making it easier to sit and stand up. It features a dual-flush system with options for 1.1 gallons per flush (liquids) and 1.6 gallons per flush (solids), meeting EPA WaterSense standards for water efficiency, so it helps save water without sacrificing flush power.

The flushing system uses a powerful siphon jet with a fully-glazed trapway, which usually means quiet and effective flushing with less risk of clogs. The toilet's dimensions are on the compact side, which is good for smaller bathrooms. Its seat is made from durable polypropylene with a soft-close function, preventing loud slamming and adding to user comfort. Installation is straightforward with a standard 12-inch rough-in and included hardware, even for those with little plumbing experience.

Weighing 125 pounds means it might be a bit heavy to handle during installation without help. Also, while the design is modern and smooth, some may prefer a different seat shape than the U-shaped one provided. The one-year limited warranty and lifetime technical support add peace of mind. This toilet is a solid pick for anyone looking for an efficient, comfortable, and stylish one-piece toilet, especially suited for small to medium-sized bathrooms.

Rating
9.7
Height
Flushing System
Water Consumption

Most important from
287 reviews

Height
The 17-inch ADA comfort height makes sitting and standing significantly easier, especially benefiting taller individuals and those with mobility challenges.
Flushing System
The powerful siphon jet flush consistently clears the bowl effectively every time, ensuring reliability.
Water Consumption
The dual flush system efficiently conserves water by offering 1.1 gallons for light flushes and 1.6 gallons for heavier flushes without compromising flush power.
Material and Finish
The sleek one-piece, skirted design not only adds a modern look but also simplifies cleaning compared to traditional two-piece toilets.
Seat Type
The seat is comfortable and durable, enhancing the overall user experience.
#3

Kohler Leap One-Piece Elongated Smart Toilet with Bidet Built In, Dual-Flush, Quiet-Close

Rating
9.4
Bowl Shape
Seat Type

Most important from
8 reviews

Bowl Shape
The seat and bowl feel smaller than expected, impacting overall comfort.
Seat Type
Raising the seat requires manual effort or using the remote, lacking a convenient exterior button.

The Kohler Leap One-Piece Elongated Smart Toilet is a modern and well-equipped choice for those looking for a comfortable and hygienic bathroom fixture. Its elongated bowl shape offers extra seating space, which many find more comfortable compared to round bowls. The dual-flush system allows you to choose between a light 1.0 gallon flush for liquid waste and a stronger 1.28 gallon flush for solid waste, helping to save water without sacrificing performance. With a Comfort Height design, this toilet sits at chair height, making it easier for most adults to sit down and stand up.

The fully skirted trapway simplifies cleaning by hiding the pipes and reducing places where dirt can accumulate, while the quiet-close seat prevents loud slamming. One of the standout features is the integrated bidet system with a stainless steel wand that offers adjustable spray options, warm water, and self-cleaning with UV light, which improves hygiene and user convenience. Motion-activated lid opening and closing add a touch of smart technology, enhancing the hands-free experience.

The toilet’s material is high-quality plastic with a sleek white finish that fits well in contemporary bathrooms. At just over 20 inches tall and weighing around 106 pounds, it’s a solid, floor-mounted model that should be stable and durable. The plastic seat is standard but functional. Due to its advanced features and weight, it might be pricier and more complex to install than basic models. Additionally, the plastic finish is easy to clean but may not feel as premium as ceramic or porcelain seats to some users. This toilet is ideal for those seeking a smart, water-efficient, and comfortable one-piece toilet with built-in bidet functions, especially when upgrading a bathroom with modern conveniences.

Rating
9.4
Bowl Shape
Seat Type

Most important from
8 reviews

Bowl Shape
The seat and bowl feel smaller than expected, impacting overall comfort.
Seat Type
Raising the seat requires manual effort or using the remote, lacking a convenient exterior button.

Buying Guide for the Best One Piece Toilets

Choosing the right one-piece toilet involves understanding your needs and preferences, as well as the key specifications that differentiate various models. One-piece toilets are known for their sleek design and ease of cleaning, as the tank and bowl are integrated into a single unit. To make an informed decision, consider the following key specifications and how they align with your requirements.
Bowl ShapeThe bowl shape of a toilet can be either round or elongated. Round bowls are more compact and are ideal for smaller bathrooms, while elongated bowls offer more comfort and are better suited for larger spaces. Consider the size of your bathroom and your personal comfort preferences when choosing the bowl shape.
Flushing SystemThe flushing system determines how effectively the toilet clears waste. Common types include gravity-fed, pressure-assisted, and dual-flush systems. Gravity-fed systems are quieter and more common, pressure-assisted systems offer a powerful flush but can be noisier, and dual-flush systems provide options for water conservation. Choose a flushing system based on your preference for noise level, water efficiency, and flushing power.
Water ConsumptionWater consumption is measured in gallons per flush (GPF). Toilets typically range from 1.28 GPF to 1.6 GPF. Lower GPF models are more water-efficient and can help reduce your water bill, while higher GPF models may offer a more powerful flush. Consider your priority between water conservation and flushing performance when selecting the water consumption rate.
HeightToilet height can affect comfort, especially for taller individuals or those with mobility issues. Standard height toilets are around 15 inches from the floor to the seat, while comfort height toilets are around 17 to 19 inches. If you have specific comfort needs or accessibility requirements, opt for a comfort height toilet.
Trapway DesignThe trapway is the channel that waste travels through to reach the plumbing. A fully glazed trapway can help prevent clogs and ensure a smoother flush. Some toilets also feature a concealed or skirted trapway for easier cleaning and a more streamlined appearance. If ease of maintenance and aesthetics are important to you, consider these design features.
Material and FinishMost one-piece toilets are made from vitreous china, which is durable and easy to clean. The finish can be standard or include special coatings that resist stains and bacteria. If hygiene and ease of cleaning are top priorities, look for toilets with advanced finishes.
Seat TypeToilets can come with different types of seats, such as standard, soft-close, or heated. Soft-close seats prevent slamming and are quieter, while heated seats offer added comfort. Choose a seat type based on your comfort preferences and the features you value.

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