What Are the Standard Bathtub Sizes?
If you‘re in the market for a new bathtub, one of the first things to figure out is what size you need. Tub dimensions can vary quite a bit, so it‘s important to understand the standard bathtub sizes available before choosing one for your bathroom. In this comprehensive guide, we‘ll walk through the different standard tub sizes and help you determine the right size bathtub for your needs and space.
What is Considered a Standard Size Bathtub?
The most common standard bathtub size is 60” x 30” x 14” – 60 inches long, 30 inches wide, and 14 inches deep. This size, referred to as the baseline standard tub, allows most average-height adults to fully stretch out and relax in the tub comfortably.
Here are some other standard tub size dimensions to be aware of:
- Alcove tub – 60” x 32” x 19”
- Corner tub – 60” x 32” x 23”
- Small tub – 54” x 27” x 14”
- Large/soaking tub – 66” x 42” x 23”
So in summary, standard tubs range from about 54 to 66 inches long, 27 to 42 inches wide, and 14 to 23 inches deep. While sizes may vary slightly, the 60” x 30” tub remains the most ubiquitous size that fits most spaces and bathers.
Standard Bathtub Types and Sizes
There are several common kinds of bathtubs that come in standard dimensions. Here is a more in-depth look at some popular tub types with their standard sizing info:
Alcove Tubs
- Length – 60 inches
- Width – 30-32 inches
- Height – 14-19 inches
Alcove tubs are designed to nestle into a small recessed alcove or nook in the bathroom. They utilize three walls for support and typically have an apron or finished front panel. Their compact footprint makes them a versatile option to fit in many bathroom layouts.
Corner Tubs
- Length – 60” or 42” on each side
- Width – 32 inches
- Height – 23 inches
Corner tubs efficiently utilize the two adjoining walls of a bathroom corner for support. Their perpendicular orientation can maximize floor space. The most common corner tub sizes are 60” x 32” and 42” x 42”.
Drop-In Tubs
- Length – 60”-72”
- Width – 30”-48”
- Height – 14”-23”
Drop-in, or platform tubs, have no finished exterior sides. They drop into a tub deck and rely on the floor for support. Tile, surround, or other materials finish the sides. Their length can range from 60” up to 72”.
Freestanding Tubs
- Length – 60”-70”
- Width – 30”-48”
- Height – 15”-23”
Freestanding tubs have ornate clawfoot, pedestal, or simple sleek designs. They do not touch any walls. Oval and rectangular shapes are common. Lengths range from 60” to 70”.
Soaking Tubs
- Length – 60”-72”
- Width – 32”-42”
- Height – 18”-24”
Soaking tubs are designed for full body immersion. They are usually deeper, with lengths starting at 60” up to 72” for a true spa experience. Many feature hydrotherapy jets.
What is the Standard Size for a Soaker Tub?
When it comes to a relaxing soak, bigger is often better. Here are some typical dimensions for soaker tubs:
- Length – 60” to 72”
- Width – 32” to 42”
- Depth – At least 18” and up to 24”
Soaker tubs run longer and deeper than standard tubs, allowing full body submersion. Custom extra-long sizes like 84” are also available. Built-in seats and corner configurations can optimize the bathing space.
What is the Standard Length of a Bathtub?
The accepted standard length of a bathtub is 60 inches. This five foot length allows most people, except for perhaps very tall individuals, to fully stretch out and relax in the tub.
Tub lengths may vary by a few inches in either direction, but the 60 inch size remains the expected norm for most residential installations. It is a length that efficiently fits average adult bathers without requiring excessive bathroom space.
When shopping for a new tub, look for models close to 60 inches long to enjoy the standard bathing experience. Measure your alcove or space to ensure the tub will fit.
What are the Standard Dimensions of an Alcove Tub?
Here are the standard dimensions for an alcove tub:
- Length – 60 inches
- Width – 30-32 inches
- Height/Depth – 14-19 inches
This compact size range allows alcove tubs to nestle into a recessed nook in the bathroom. They can be surrounded by three walls or tucked into the corner.
Key features of a standard alcove tub:
- Integral apron or skirt on one short side
- Built-in or removable tiling flange
- Can be installed without a full tub enclosure
Look for these dimensions and details when shopping for an alcove tub that will fit your existing space.
What Size is Considered a Standard Bathtub?
The size 60” x 30” x 14” is considered the standard for most bathtubs. This size, providing enough room for average adults to fully recline, has become the expected norm for residential bathtub installations.
The 60 inch length allows bathers to lie down without bending knees. The 30 inch width affords sitting up and moving around. And the 14 inch depth keeps capacity around 45 gallons—deep enough to soak but not flood your water bill.
While some variation exists, this 60” x 30” size is the baseline that fits most spaces and works for most people. If you‘re unsure what size to choose, start here.
What are the Standard Dimensions of a Walk-in Bathtub?
Walk-in tubs have smaller dimensions to allow easy, safe access:
- Length – 48” to 60”
- Width – 28” to 32”
- Depth – 37” to 47” total (seat is 15” deep)
The shorter length and width provide clear space to open the inward-swinging watertight door and enter safely. The extra depth comes from the built-in seating and access area.
Other standard walk-in tub features:
- Slip-resistant standing/seating area
- Grab bars for support and stability
- Low step-over threshold
- Tight door seal to prevent leaks
The walk-in tub dimensions prioritize accessibility along with a pleasant bathing experience. Measure your bathroom to ensure one will fit.
Conclusion
When shopping for a new bathtub, carefully measure your available space and look for a size close to the 60” x 30” standard dimensions. While you can size up or down depending on your needs, this size remains the most widely used. Also consider the activities you’ll use the tub for and the overall bathroom layout when choosing the right size.