The most important fit numbers in a walk-in tub are the seat width and the soaking depth, and both start with measuring you, not the bathroom. The quick answer: Ella seat widths run from 19" (Petite, Transfer26) to 29" (TransferXXL), and the tub seat must be wider than your hip measurement. Soaking depth is determined by the interior length of the tub, the length of the seat, and the depth from the top of the seat to the overflow drains.

How to Measure Your Body, Step by Step

Follow the same process our measuring video demonstrates:

1. Sit in a chair facing a wall, in a relaxed position.
2. Measure your hips while seated. The tub seat must be wider than your hip size.
3. Measure your shoulder width while seated, and make sure the tub you choose has the proper shoulder width for your body size.
4. Measure from your head to your feet while sitting, to gauge the tub length that fits you.
5. Compare your numbers to the tub drawings and specifications on each product page, and be exact: different body sizes require different size tubs.

One tip from the video worth repeating: we have extra-large tubs with very long seats designed for taller bathers, and those can be uncomfortable for an average or shorter person, so bigger is not automatically better.

Seat Widths from Smallest to Largest

Seat length, interior length and seat-to-overflow height for every model are tabulated in interior dimensions and soaking depth by model.

Understanding Soaking Depth

As the video explains, the overall soaking depth of a walk-in tub is determined by three factors: one, the interior length of the tub; two, the length of the seat; and three, the depth from the top of the seat to the overflow drains. Your own size then determines your personal soaking depth, because a taller bather sits higher in the water than a shorter one in the same tub. As a concrete example from our Transfer tub video, the Transfer32 has 44" of interior length, a 15 1/2" seat length, and a soaking depth of 14 1/2".

Seat Height and the Foot Well

Seat height is 17" on most models, a comfortable chair-like height that makes sitting down and standing up easier. All Ella walk-in tubs also have a large foot well, which gives you easy access and room for seated or standing showering. The seat is molded and not adjustable, but a seat pillow riser adds a few inches; see seat risers and cushions. If you are between two models, our team is happy to talk through your measurements with you and recommend the best match.

More on Measuring Soaking Depth

This companion video is a second walkthrough of measuring the soaking depth in your walk-in tub, a useful refresher before you compare your own measurements with the spec sheet. For the whole choosing process on video, from body measurements to doorways and door styles, see the choosing a walk-in tub video guide.

Common Questions

Still need help? Open a support ticket at ellasbubbles.com/support and the team will be glad to confirm the exact numbers for your model, or call (800) 480-6850.