Save up to 35% on select items with code FALL26
Save up to 35% on select items with code FALL26
Skip to content

Toto Elongated Toilet Seats

A TOTO elongated WASHLET seat fits an oval toilet bowl measuring about 18.5 inches from the seat mounting holes to the front of the bowl, and replaces the seat already on it. Shop the elongated WASHLET range here: the S1, KS2, KC2, S7 and S7A, with the S7A offered in Cotton White and Sedona Beige.

  • TOTO Washlet S7A Bidet Seat - White electronic toilet seat with control panel on a white background
    TOTO Washlet S7A Bidet Seat - White toilet seat on a white background
    TOTO Washlet S7A Bidet Seat
    $2,005.00
    $1,404.00

    What do you get with the TOTO Washlet S7A? The TOTO Washlet S7A is a standalone electronic bidet seat, sold on its own rather than as part of a toi...

    View full details
  • TOTO WASHLET S1 Bidet Seat - Round - corner view on a white background
    TOTO WASHLET S1 Bidet Seat - Elongated - Corner view on a white background
    TOTO WASHLET S1 Bidet Seat
    $597.00
    $399.00

    What do you get with the TOTO Washlet S1? The TOTO Washlet S1 is a standalone electronic bidet seat, sold on its own rather than as part of a toile...

    View full details
Hundreds of 5-Star Reviews
Free Shipping
Price Match Promise
Easy Returns

What a TOTO Elongated WASHLET Seat Is

A TOTO elongated WASHLET seat is a bidet seat sized for an oval bowl. TOTO defines elongated as 18.5 inches from the mounting holes to the front of the bowl, against 16.5 inches for a round-front bowl. The seat takes the place of the one you already have and washes with fresh water drawn from the supply line behind the toilet. TOTO describes the job as being as easy as changing the toilet seat, and says most people can fit one in under an hour.

Every seat here is a WASHLET, so all of them give you a warm-water wash, a heated seat, adjustable water temperature and pressure, an adjustable nozzle position and a self-cleaning wand. What separates them is the dryer, the controls and the bowl-cleaning technologies. If your bowl turns out to be round, the same models appear in TOTO round seats; for the elongated shape across every brand the store carries, see elongated bidet seats.

Do TOTO Toilets Require a Special Toilet Seat?

TOTO toilets do not require a special toilet seat. TOTO states that its WASHLET bidet seats fit most standard North American toilets, not only TOTO ones, and the reverse holds too: a standard seat fits a TOTO bowl. Fit is decided by the bowl, not the badge. You need the right shape, mounting holes 5.5 inches apart, a tank meeting the bowl at about 90 degrees, and flat space between the holes and the tank face — at least 2 inches on the S7, S7A and KC2. The elongated vs round bowl guide walks through the measurement.

The Five Models in This Collection

Five WASHLET models sit here, and they step up in a straight line. The S1 is the plainest: an instantaneous water heater, a side arm control panel, a self-cleaning wand, TOTO's CLEAN RESIN coating and a SoftClose lid, with no dryer. The KS2 keeps the arm panel and adds a three-setting warm air dryer, a night light and an auto energy saver. The KC2 illuminates its arm panel and pairs a three-setting dryer with an aerated dual-action spray that oscillates. The S7 moves to a remote with memory for four users, a five-setting dryer, a deodorizer, EWATER+ and PREMIST. The S7A is the S7 plus a motion-activated auto open/close lid, and is also sold as complete WASHLET S7A toilet sets.

What EWATER+ and PREMIST Do

EWATER+ and PREMIST are the two bowl-cleaning technologies on the S7 and S7A. TOTO describes EWATER+ as electrolyzing water to produce a sterilizing agent, hypochlorous acid, that keeps the wand and toilet bowl hygienic. PREMIST, TOTO says, wets the surface of the toilet bowl, aiding in the removal of waste and resulting in a better clean. The S1, KS2 and KC2 carry neither; they rinse the wand and leave the bowl to the flush.

How to Choose a TOTO Elongated Toilet Seat

The best elongated toilet seat to buy is the one that clears your tank, reaches an outlet, and carries only the features you will use every day. Take those three in order and five models narrow to one or two.

How Do I Determine What Toilet Seat Will Fit My Toilet?

You determine what toilet seat will fit your toilet by measuring the ceramic, not the seat sitting on it. Measure in a straight line from the center of the two hinge bolts to the front edge of the bowl: about 18.5 inches is elongated, about 16.5 inches is round. An old seat can overhang the rim, so if you land between the two figures, unbolt it and measure again. Then take the two numbers a WASHLET also depends on — bolt holes 5.5 inches apart, and about 2 inches of flat space in front of the tank.

Do All Elongated Toilet Seats Fit All Elongated Toilets?

No, not all elongated toilet seats fit all elongated toilets. Elongated describes the length of the bowl and nothing else, so a seat can be the right shape and still not mount. A WASHLET is thicker at the back than a plain seat, which is why TOTO asks for that 5.5-inch bolt spacing, a roughly 90-degree tank face and 2 inches or more of clearance. Tanks that slope forward, French-curve bowls and some one-piece toilets are where it goes wrong; the bidet installation guide covers what the mounting plate and T-valve need behind the toilet.

Find the Outlet Before You Pick a Model

Every seat here is electric and needs a grounded 120-volt GFCI outlet behind or beside the toilet. The S7A, S7 and KC2 listings ask for that outlet within three feet; the S1 and KS2 call for a standard 120V GFCI outlet within reach of the cord. If nothing is behind your toilet, that is an electrician's job, not a plumber's. Four of the five list an instantaneous water heater, which warms water as it passes instead of storing a tankful, so a long wash does not run cold — see bidets with instant and unlimited warm water.

Remote or Arm Panel, Dryer or No Dryer

Controls split the collection in two. The S1, KS2 and KC2 use an arm control panel on the side of the seat, illuminated on the KC2; the S7 and S7A use a remote that stores settings for four users. A remote gives you a cleaner seat line and easier reach, while an arm panel cannot be lost or run out of batteries. Drying splits things again: no dryer on the S1, three settings on the KS2 and KC2, five on the S7 and S7A. Start with bidets with a dryer or bidet seats with remote control.

Frequently Asked Questions about Toto Elongated Toilet Seats

Does it matter if you buy a round or elongated toilet seat?

It matters, because round and elongated toilet seats are not interchangeable. An elongated seat on a round bowl overhangs at the front; a round seat on an elongated bowl leaves bare ceramic showing at the rim. Measure from the hinge bolts to the front edge of the bowl first: roughly 16.5 inches is round, roughly 18.5 inches is elongated. Elongated also gives you more models to choose from.

Where can I find replacement seats for my TOTO toilet?

Replacement seats for a TOTO toilet come in two kinds. TOTO sells plain seats, such as the elongated SoftClose seat (SS114) in Cotton, Colonial White, Bone, Sedona Beige and Ebony, with mounting hardware included. It also sells WASHLET bidet seats, which are what this collection carries. Both mount on the same two bolt holes, so replacing a worn seat is the natural moment to add a wash function.

Which elongated WASHLET here is simpler to troubleshoot: the arm-panel S1, KS2 and KC2 or the remote S7 and S7A?

The arm-panel S1, KS2 and KC2 are simpler to troubleshoot, because the controls are wired into the seat: a dead panel points straight at the GFCI outlet, so press test, then reset. The remote S7 and S7A add one more suspect first, the remote batteries. On any of the five, weak spray is usually a partly closed T-valve or sediment in the mesh filter screen. More in the troubleshooting guide.

What are the disadvantages of a TOTO elongated WASHLET seat?

The disadvantages of a TOTO elongated WASHLET seat are electrical and dimensional. Every model here is electric and needs a grounded 120-volt GFCI outlet, which many older bathrooms do not have; the S7, S7A and KC2 ask for one within three feet of the toilet. Fit also depends on 5.5-inch bolt spacing and flat space in front of the tank. And the S1 has no dryer, so if you want to skip paper, it is not the model.

Which TOTO elongated WASHLET seat is easiest for seniors to reach and operate?

The easiest TOTO elongated WASHLET seats to reach and operate are the S7 and S7A, because both are worked from a remote rather than a panel beside the seat, and the S7A opens and closes its lid on motion so there is no bending to the lid. The KS2, S7 and S7A also carry a night light for after-dark trips. Bidets USA groups its accessible options under bidets for seniors.

Is it better to have a wood or plastic toilet seat?

Wood is not an option once you move to a bidet seat, because a WASHLET houses a water heater, a wand and electronics inside the seat body. TOTO molds them in resin instead and finishes the S1 and KS2 with its CLEAN RESIN coating, plus a seamless seat design with no gap underneath to trap anything. If you want wood, you are shopping plain replacement seats rather than this collection.

Which TOTO elongated toilet seats come in a color other than cotton white?

The S7A is the model here offered in a second color: Sedona Beige, SKU SW4736#12, alongside the Cotton White version. TOTO's plain elongated SoftClose seat is the broader palette, sold in Cotton, Colonial White, Bone, Sedona Beige and Ebony. If you are matching a beige suite, the store groups the finish under Sedona Beige bidets and toilets.

Will a TOTO elongated WASHLET seat fit a TOTO Drake?

A TOTO elongated WASHLET seat fits an elongated Drake in most configurations, since TOTO builds WASHLETs to fit most standard North American toilets. Check the same three things you would on any bowl: elongated length, bolt holes 5.5 inches apart, and at least 2 inches of flat space between the holes and the front of the tank. Pre-matched pairings are listed under Drake WASHLET sets.

Which elongated WASHLET here is easiest to keep clean, the CLEAN RESIN S1 and KS2 or the EWATER+ S7 and S7A?

The S1 and KS2 are the easiest to wipe by hand, finished in CLEAN RESIN over a seamless seat with no gap underneath to trap anything. The S7 and S7A do more of it for you, since EWATER+ mists and cleans the bowl water after every use. Either way, unplug the seat, use mild soap, keep bleach off the nozzle and water off the KC2's illuminated arm panel. Cleaning guide.