For a standard-toilet conversion kit, choose NuFlush if you want the most budget-friendly DIY option that supports hot-and-cold connections. If you prefer a mid-range, easy-install attachment with self-cleaning nozzles, consider TUSHY; for a thin, low-profile fit choose Brondell.
Brondell is the top pick when you need a low-profile/thin attachment to fit tight toilet clearances—recommended for slim designs, though not the cheapest choice compared with basic attachments.
=3TUSHYTUSHY fits buyers who want an easy-install, stylish attachment with self-cleaning nozzles and broad compatibility—good all-around balance but typically pricier than the most basic kits.62%
Many popular home goods brands, plumbing suppliers, and online retailers sell bidet conversion kits and attachments that fit standard toilets.
Popular Retailers and Brands
sells specialized conversion kits featuring hot and cold water connections designed to work with standard toilet hardware. You can view options directly on the Official Store.[1]
Major retailers carrying these kits include The Home Depot and Lowe's.
For the easiest retrofit, look for a bidet attachment (about $30–$150). For more features like heated seats, warm water, dryers, and remote controls, choose a bidet toilet seat (often $100–$600+). The Home DepotThe Home Depot Make sure your toilet is compatible (most standard round or elongated two-piece toilets are).
A wide variety of brands and major retailers sell bidet attachment conversion kits that fit standard two-piece (and many one-piece) household toilets without requiring a full plumbing overhaul.[1]
Online Retailers: Amazon, Wayfair , and Walmart stock a massive assortment of budget-friendly and ultra-slim conversion kits.
Directly from Manufacturer Sites: Ordering from Bio Bidet or Luxe Bidet ensures you get full warranty support and exact compatibility parts.[1][2][3][4]
Are you looking for a simple non-electric cold water attachment , or do you prefer an electric bidet seat that requires a nearby outlet for warm water and heated drying?
Yes. If you have a typical U.S. toilet, you have several options that install under the existing toilet seat rather than requiring a separate bidet fixture.
TUSHY Dual Nozzle Bidet Attachment - $69.99 (The Home Depot)
Bio Bidet SlimEdge — manufacturer - $59.00 (Bio Bidet)
Major sellers
TUSHY — sells non-electric attachments such as the Classic/Dual Nozzle and warm-water models. TUSHY says its attachments fit most standard and skirted toilets, although French-curve toilets are a common exception.
Brondell — sells SimpleSpa, FreshSpa, PureSpa and other attachments, as well as complete bidet seats. Its attachments are designed for existing toilets and generally require no electrical outlet.
Bio Bidet by Bemis — offers several non-electric attachments, including the SlimEdge. Its products generally fit round and elongated toilets, with some one-piece/French-curve exceptions.
KOHLER — primarily offers replacement bidet toilet seats rather than the very thin under-seat attachments. Its seats are designed to upgrade existing toilets.
What I'd check before buying
Measure three things:
Whether your bowl is round or elongated.
The distance between the two toilet-seat mounting holes (about 5½ inches is standard).
Clearance between the mounting holes and the toilet tank.
If you tell me your toilet's brand/model (or upload a photo of the toilet), I can check compatibility and show you a few suitable conversion kits at different price points.
Converting a standard toilet into a bidet doesn't usually require a complicated plumbing overhaul. Most people use bidet attachments or bidet seats that mount right onto your existing porcelain bowl and hook into your current water supply line.
Top brands and retailers that sell these conversion kits include:
TUSHY: Famous for their sleek, non-electric mechanical attachments (like the TUSHY Classic ) that install in under 10 minutes without an electrical outlet. You can buy them directly on the TUSHY Official Store.
Brondell: Offers popular ultra-slim mechanical attachments like the SimpleSpa and FreshSpa series, as well as full electronic bidet seats. Their selection is available on the Brondell Bidet Attachments Page.
Bio Bidet (by Bemis): Known for DIY-friendly non-electric attachments like the SlimEdge, alongside high-end luxury electric seats. You can find their products through major retailers or the Wayfair Bio Bidet Selection.[1]
NuFlush: Specializes in affordable DIY conversion kits supporting both cold and warm water hookups, available via platforms like the Walmart NuFlush Conversion Kit Listing.[1]
Home Improvement Retailers: Big-box stores like The Home Depot and Lowe's stock a wide variety of in-store and online conversion options, including brands like Wudkey and Kohler. You can browse options directly on The Home Depot Bidet Attachment Page.[1]
To help narrow down the best option for your setup, let me know:
Do you prefer a non-electric attachment (cold water only, budget-friendly) or an electronic bidet seat (requires an electrical outlet for warm water, heated seats, etc.)?
Wayfair carries a wide selection of ultra-slim, non-electric bidet attachments and conversion plates that install beneath existing standard toilet seats. Browse available models on the Wayfair Bidet Collection.[1]
Medex Supply distributes specialized systems like the Bidematic bidet setup configured for one-piece or two-piece standard toilets. Check details via Medex Supply.
Walmart stocks various DIY add-on kits and mechanical bidet conversion parts online through third-party and direct suppliers. View selections at Walmart.[1]
If you'd like, let me know:
Do you prefer a non-electric attachment or an electric bidet seat with warm water and a dryer?
Do you have access to a warm water line near the toilet, or just a cold water supply?
I can help narrow down the best specific model for your bathroom layout.
Yes. If you have a standard existing toilet, you have several good retrofit options—usually called a bidet attachment or bidet toilet seat.
Popular sellers and options
TUSHY — Their Classic 3.0 is a non-electric attachment that installs between your existing seat and bowl. It has adjustable water pressure and a self-cleaning nozzle. Lowe's currently carries it.
TUSHY Dual Nozzle Bidet Attachment - $69.99 (The Home Depot)
Brondell — Makes inexpensive attachments such as the FreshSpa, as well as complete bidet seats. Brondell says its products are designed for installation on standard toilets.
Brondell FreshSpa Comfort+ Bidet Attachment - $39.98 (The Home Depot)
BIO BIDET — The SlimEdge and HD-4000 are inexpensive, non-electric retrofit attachments. Home Depot currently sells both.
BIO BIDET HD-4000 Essential - $29.00 (The Home Depot)
Home Depot — Has a particularly large selection, including Brondell, BIO BIDET, TUSHY, KOHLER and others. Current attachment prices range roughly from $30–$100+, depending on features.
Lowe's — Also carries TUSHY, Brondell, KOHLER, BIO BIDET and other retrofit attachments.
What I'd recommend
If you want simple and inexpensive, I'd look at a Brondell FreshSpa or BIO BIDET HD-4000. If you want something a little more refined, TUSHY Classic 3.0 is a popular choice.
If you'd prefer warm water, a heated seat, dryer, etc., you'll want a full electric bidet seat rather than the basic attachment. Those generally require an electrical outlet near the toilet.
One thing to check before buying: whether your toilet is round or elongated, and whether it's a two-piece, one-piece, or skirted toilet. Some unusual toilet shapes need special hardware. Brondell provides a measurement guide for this.
If you tell me your toilet brand/model (or send me a photo) and whether you want cold-water only vs. warm water, I can narrow it down to 2–3 kits that should fit.
Upgrading a standard toilet to a bidet doesn't require replacing the whole ceramic bowl; you can easily use a bidet attachment or a replacement bidet seat (often referred to as conversion kits).[1]
Popular brands and where to find them depend on whether you want a simple non-electric mechanical attachment or a full electronic luxury seat:
Hello TUSHY: Famous for sleek, mechanical non-electric attachments (like the TUSHY Classic and TUSHY Spa 3.0 ) that slide under your existing seat and hook directly into your toilet's water line . Available directly from their site or major retailers like The Home Depot.[1]
LUXE Bidet: Maker of the widely popular, highly rated, and budget-friendly NEO series (such as the NEO 120). These non-electric attachments are heavily stocked on Amazon and at major hardware chains.
Brondell: Offers everything from ultra-thin non-electric attachments (SimpleSpa) to high-end luxury electric bidet seats with heated seats and warm-air dryers (Swash Thinline). Found on their website, Amazon , and home improvement stores.
Bio Bidet by Bemis: Well-known for entry-level slim attachments (SlimEdge) as well as full-featured electric bidet seats. Available via their online storefront, The Home Depot , and online retailers.[1]
TOTO: The gold standard for electronic "Washlet" bidet toilet seats that replace your standard seat entirely for a seamless, spa-like upgrade. Available through specialty plumbing suppliers, The Home Depot , and bathroom showrooms.
NuFlush: Specializes in direct conversion hardware kits supporting hot and cold water hookups. Often found at Walmart and online marketplaces.[1]
If you'd like, let me know:
Do you have an electrical outlet near the toilet (for a heated seat/warm water), or do you prefer a non-electric option?
Is your toilet bowl round or elongated?
I can help narrow down the best specific kit for your setup.
Yes. If you have a typical existing toilet, you can add a bidet attachment/conversion kit without replacing the toilet or running new electrical wiring.
Some good sellers/brands include:
TUSHY — popular under-seat attachments; their compatibility guide says their attachments fit most standard toilets.
Brondell — sells both simple non-electric attachments and more sophisticated bidet seats. Their attachments are designed for standard toilets and generally install in about 20 minutes.
Kohler — offers manual and electric bidet seats/attachments for existing toilets.
Bio Bidet — widely available through home-improvement retailers, with inexpensive non-electric attachment kits.
LUXE Bidet — inexpensive mechanical attachments, including single- and dual-nozzle models.
A few current options
TUSHY Dual Nozzle Bidet Attachment - $69.99 (The Home Depot)
Brondell FreshSpa Comfort+ Bidet Attachment - $39.98 (The Home Depot)
BIO BIDET HD-4000 Bidet Attachment - $29.00 (The Home Depot)
LUXE Bidet NEO 185 - $49.99 (Target)
Kohler PureWash M100 - $31.22 (The Home Depot)
For a simple, inexpensive conversion, I'd look first at a non-electric attachment in roughly the $30–$70 range. It connects to the toilet's existing water supply and doesn't need an outlet.
One important caveat: toilet shape matters. Standard two-piece round or elongated toilets are usually straightforward, but skirted, one-piece, and especially "French curve" toilets can require special hardware or may not be compatible. Brondell, for example, recommends checking the bolt-hole spacing and clearance around the tank.
If you tell me your toilet's brand and model (or send me a photo of the toilet), I can narrow it down to kits that should fit it.
Converting a standard two-piece or one-piece toilet into a bidet is straightforward, and you don’t necessarily need a whole new toilet or an expensive integrated bidet seat. Most conversion kits (often called bidet attachments or non-electric mechanical units) mount right under your existing toilet seat and hook into your standard water supply line.[1][2][3]
Popular brands and the major retailers that sell them include:
Popular Bidet Conversion Brands
TUSHY: Known for sleek, modern, non-electric mechanical attachments that require no electricity and install in about 10 minutes. Available at retailers like The Home Depot and directly from TUSHY.[1]
Luxe Bidet: Highly rated for their NEO series (like the NEO 120 or warm-water NEO 320 Plus ), featuring dual nozzles and self-cleaning functions. Available at Lowe's, Target , and Amazon.[1]
Brondell: Offers everything from basic mechanical attachments to luxury electronic bidet toilet seats (Swash series). Available at major home improvement stores and Brondell.
Bio Bidet: Another powerhouse brand ranging from simple attachments to full-featured heated electronic seats, found via The Home Depot and Bio Bidet.
NuFlush: Offers mechanical conversion kits featuring hot/cold water connections and metal/enamel platforms, available at Walmart and NuFlush.[1][2]
Where to Buy Them
Home Improvement Stores: The Home Depot and Lowe's carry a solid in-store and online selection of standard attachments and full electronic seats.
Mass Retailers: Walmart and Target offer budget-friendly entry-level kits online and occasionally in-store.
Online Marketplaces & Specialty Sites: Wayfair and [Amazon] stock a vast array of universal fit DIY kits.[1]
Are you looking for a simple non-electric cold-water attachment , or would you prefer a warm-water or electric bidet seat that requires a nearby power outlet? Let me know and I can recommend specific models!
Yes. If you have a normal existing toilet, you have several good options—usually called a bidet attachment, bidet toilet seat, or handheld bidet conversion kit.
Good places/brands to consider
Brondell — makes simple under-seat attachments, handheld sprayers, and more sophisticated electric bidet seats. Their attachments are designed for existing toilets and generally don't require electricity.
TUSHY — sells under-seat bidet attachments and handheld systems. TUSHY says its attachments fit about 95% of North American toilets, although French-curve toilets can be problematic.
LUXE Bidet — particularly good if you're looking for an inexpensive, straightforward mechanical attachment. Its kits are designed for most standard U.S. toilet setups.
Kohler — makes the PureWash M100, a relatively inexpensive non-electric attachment.
KOHLER PureWash M100 Attachable Bidet System - $31.22 (The Home Depot)
Bio Bidet — another established option, including inexpensive non-electric attachments.
BIO BIDET HD-4000 Essential Non-Electric Bidet Attachment - $29.00 (The Home Depot)
What I'd recommend
If this is your first bidet, I'd start with a non-electric attachment that sits underneath your existing toilet seat. It's inexpensive, doesn't require an electrical outlet, and installation is generally just a T-valve and hose connection. Brondell says its standard installations can take around 20 minutes.
If you'd rather have warm water, a heated seat, warm-air dryer, or remote control, look at an electric bidet toilet seat instead. Those replace your existing seat and require a nearby GFCI electrical outlet.
If you tell me your toilet brand/model (or send me a photo of the toilet and the water connection behind it), I can narrow it down to 2–3 kits that will fit and tell you where to buy them.
