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.
Fitting a Standard Alcove: Most bathtubs in the U.S. are 60 inches long and 30 inches wide, enclosed by walls on three sides. Walk-in tubs designed to replace these standard tubs are built to fit within that same five-foot stud pocket, which means you can often swap one in without reframing the alcove — a major advantage for remodelers working in existing homes.
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.
Types of Walk-in Tubs
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.
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.
Pro Tip: Dana Jones, a kitchen and bathroom designer based in Long Beach, California, points out that basic soaking tubs have a major practical advantage over jetted models: “A simple soaking tub is preferable, because it’s so much easier to keep sanitized.” She notes that even if you never use them, jets must be routinely flushed with bleach to keep them clean—an ongoing maintenance chore that compact soaking tubs eliminate entirely.
When shopping for a compact soaking tub, look for features that maximize comfort in a smaller footprint: a slanted back for reclining and an overflow valve positioned at least 16 inches above the tub floor, which allows for a deeper, more satisfying soak without requiring a longer tub.
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.
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.
Pro Tip: The National Kitchen and Bath Association recommends that a shared bathroom be at least 70 square feet — and that’s before accounting for the oversized footprint of a two-person tub. If your bathroom falls short of that threshold, a compact walk-in tub designed for a single bather is a far more practical choice.
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.
ADA guidelines require a minimum shower floor space of 30 by 60 inches, plus a 36-by-60-inch clearance area outside for wheelchair access. In one TOH renovation, designer Mary Hemmerick turned the entire small bathroom into a roll-in shower with no curb to block wheelchair passage, with a vinyl membrane laid over the full subfloor to manage water. Grab bars were anchored to plywood backing behind the walls and aligned with accent tile so they looked like part of the design rather than an afterthought.
If you have a small bathroom and need wheelchair-accessible accommodations, a walk-in shower may be a more practical and cost-effective option.
Pro Tip: Steve Thomas, longtime TOH host, advises thinking beyond current needs: “It’s not enough to ask which physical obstacles someone must overcome today. A universal bath should also anticipate any unforeseen needs in years to come.”
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.
Watch for Hidden Costs
- According to the TOH Bath 2026 Survey, nearly 24% of bathroom renovators encountered unexpected water damage repairs, over 22% faced structural repairs to walls, subfloors, or framing, and about 18% dealt with mold remediation — all of which can significantly inflate the final cost of a walk-in tub project beyond the price of the unit itself.
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.
Budget Matters
- According to the TOH Bath 2026 Survey, 81% of bathroom renovators said staying within budget was “extremely important” or “very important” when making renovation decisions — all the more reason to get multiple quotes and compare compact walk-in tub options carefully before committing.
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.
When planning clearances, keep in mind that bathroom design standards call for at least 30 inches of clearance in front of a tub for safe and comfortable access. For wheelchair-accessible layouts, ADA guidelines require a minimum 36-by-60-inch clear floor area outside the shower or tub entry for ease of access — a critical consideration that can significantly expand the overall footprint of a walk-in tub installation.
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.
