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What Is the Smallest Walk-in Tub Available?

Author Image Written by Brenda Woods Updated 06/27/2024

Walk-in tubs help people with mobility limitations bathe safely, allowing them greater independence and security. Most walk-in tubs are the same approximate size as a standard alcove tub, though they may require extra floor space to allow entry and exit. However, even if you have a smaller bathroom, there may be a walk-in model that works for you. We’ve researched some of the most compact walk-in tubs available to help you make your choice.


Smallest Walk-in Tub Sizes

The smallest walk-in bathtubs generally range from 26–32 inches wide and 40–48 inches long. These compact walk-in tubs are designed to fit seamlessly into small spaces while still providing a luxurious bathing experience. Some, known as front loaders, can even fit into a shower stall.*

Here are a few of the smallest models we found in our research. All sizes are listed width by length:

American Standard: 28 inches x 48 inches
Ella’s Bubbles: 26 inches x 45 inches (Mobile U-Door), 28 inches x 48 inches (Flow), 32 inches x 40 inches (Front Entry U-Door)
Endurance: 26 inches x 46 inches, 27 inches x 39 or 47 inches, 32 inches x 38 inches
Kohler: 32 inches x 36 inches (customized)
American Tubs: 26 inches x 46 inches

It’s important to note that compact walk-in tubs are designed for smaller bathers and may not be wheelchair accessible. For instance, front-entry tubs may not have outward-swinging doors.

*Size data sourced from Ella’s Bubbles, Kohler, Lowes, Southeastern Tubs, and National Council on Aging (NCOA).


Most Common Walk-In Tub Sizes

The most popular walk-in tubs are designed to fit in the same space as your existing bathtub and work with a 50-gallon hot water heater. As a result, a standard walk-in bathtub is typically 28–32 inches wide, 51–60 inches long, and 36–40 inches high. This holds true across the top walk-in tub brands, such as Kohler, Ella’s Bubbles, American Standard, and Safe Step.

If you are converting a shower into a walk-in tub, look for a compact or front-entry model such as those described above. But if your available bathroom space is larger than a standard bathtub alcove, you may be able to accommodate a larger size walk-in tub that offers more comfort and features. Bariatric models are often 40 inches wide, while two-seat tubs offer 72–80 inches of length.


Size is not the only factor to consider when purchasing a walk-in bath. You should also consider the tub type and the features it includes. If there’s room in your budget, decide whether you want any upgrades, such as a fast-fill faucet or thermostatic valves that give you more control over the water temperature.

Bariatric Tubs

Bariatric tubs are designed for individuals with larger body frames or people who require extra space while bathing. These tubs have larger dimensions than standard walk-in tubs, with widths ranging from 36–40 inches and lengths ranging from 60–72 inches. They generally have wide seats, low thresholds, and wide doors. However, their size makes them unsuitable for small bathrooms.

Hydrotherapy Tubs

Hydrotherapy tubs, also known as whirlpool or spa tubs, have water jets or air jets that massage the body and offer relief from muscle tension, joint pain, and stress. Air bubble streams provide a weightless sensation and can increase blood flow, which is beneficial for people with diabetes or circulation issues. Water jets provide a more targeted deep-tissue massage. Hydrotherapy tubs are generally the same size as standard walk-in tubs, and compact models are available.

Soaking Tubs

Mostly, “soaking tubs” is the name given to basic walk-in tubs without features like hydrotherapy jets. They are typically the most affordable type. However, some manufacturers make deep soaking tubs that have the same length and width as traditional bathtubs, but they are much deeper. Some soaking tubs are long enough to lie down in, while others are compact enough to fit into a small bathroom.

Two-Person Tubs

Two-person tubs are designed to accommodate two people simultaneously for a shared bathing experience. Bathers sit on either end facing each other, so these tubs tend to be longer than the standard 60 inches. They may also be wider than a traditional tub and will not fit into tight bathroom spaces. Sometimes they have separate controls and individual hydrotherapy jets for each person.

Wheelchair-Accessible Tubs

Wheelchair-accessible tubs are designed for ADA (Americans with Disabilities Act) compliance. They are made for individuals with mobility issues who use a wheelchair or require caregiver assistance. These tubs generally have a wider door opening, extra grab bars, anti-slip flooring, an outward-opening door, and a spacious interior to facilitate easy transfer from a wheelchair to the tub’s seat. The exact dimensions vary, but wheelchair-accessible tubs tend to be larger than other models.

If you have a small bathroom and need wheelchair-accessible accommodations, a walk-in shower may be a more practical and cost-effective option.


Walk-in Tub Cost

According to our research into various tub manufacturers, the cost of walk-in tubs varies by size, features, materials, and brand. Tub prices range from $1,000–$12,000 or more. Basically, the more features your new tub has, the more it will cost. Installation can add another $1,700–$14,000. Installation costs will also be higher if your bathroom requires significant modifications to accommodate your new tub. Overall, most people pay between $5,700 and $12,400* total for a new walk-in tub.

As a general rule, smaller walk-in tubs tend to be more affordable than larger models. However, high-quality construction and luxury features can result in a higher total price. For instance, fiberglass tubs with a gelcoat finish tend to cost slightly less than acrylic models, which are more durable. Even the faucet style and placement can affect the price.

* Costs in this section sourced from Angi.


Our Conclusion

Even the most compact walk-in tubs can offer top-notch safety features and therapeutic benefits. A bariatric or two-seater tub may not be an option for your small bathroom, but you still have a variety of compact models to choose from.

Familiarize yourself with specifications and features, compare prices, and read customer reviews before making your decision. We recommend requesting a free quote from at least three different companies, such as Ella’s Bubbles, Kohler, and American Standard, before making your choice.


FAQ About Walk-in Tubs

What is an alternative to a walk-in tub?

One alternative to a walk-in tub is a walk-in shower with built-in seating. Walk-in showers offer many of the same benefits as walk-in tubs in terms of safety and accessibility, but they take up less space and may cost less to install.

How much space is needed for a walk-in tub?

A standard walk-in tub requires a space that is about 60 inches long and 30 inches wide. However, the exact measurements will vary by model. If you choose a wheelchair-accessible model, you must factor in additional space to accommodate the tub door’s outward swing.

What are the advantages of having a walk-in tub?

The advantages of having a walk-in tub include:

  • Safety and accessibility
  • Comfort and versatility
  • Therapeutic benefits
  • Independent living
  • Customization options

Our Rating Methodology

We objectively scores each walk-in tub brand using our in-depth rating methodology. Our team analyzes each brand by pulling quotes from company websites, calling company representatives, and comparing their standard safety and therapeutic features with our review standards. Using our review standards, we score each brand for average cost, ergonomics, extra features, safety features, warranty options, and walk-in tub type. We tally up a brand’s points out of 100, then divide its score by 20 to obtain its 5-star rating.

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