Bathtub Size and Different Types: What are bathtub dimensions?

What is a bathtub, and why is knowing a bathtub size important? Bathrooms frequently have limited space and a lot of components, so space planning is crucial. What is the typical bathtub size? Standard bathtubs are typically 60 inches long, 30 inches wide, and 14 to 16 inches high. When working up bathroom designs, homeowners and designers often find themselves moving things to get everything exactly right (skip straight to the Regular Bathtubs Size).
Bathtub size charts – Bathtub dimensions

So, if you’re planning on putting a bathtub in your bathroom, knowing about the typical bathtub sizes is the first step toward an innovative, successful bathroom design.

For instance, a corner shower stall unit takes up around 9 square feet of area, which is about 30% less than a standard-sized bathtub, which takes up more than 13 square feet of floor space. Positioning the bathtub is difficult because compact, complete bathrooms might be as little as 36 to 40 square feet.

Nevertheless, there are different sizes of bathtubs that can make your space work for you. We’ve provided some comprehensive bathtub size charts to help you.

Jump right into the Frequently Asked Questions

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Summary of Bathtubs Size

Regular Bathtub Size

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Standard bathtub sizes and those for specialized tubs like oval, corner, and whirlpool bathtubs are represented by averages and ranges.

Type of BathtubLength (in)Length (cm)Width (in)Width (cm)Height (in)Height (cm
Alcove Bathtub60 inches152.4 cm30 inches76.2 cm18 inches45.72 cm
Drop-in Bathtub45 to 72 inches114.3 to 182.88 cm30 to 32 inches  76.2 cm  14 to 20 inches35.56 cm to 50.8 cm
Oval Bathtub60 inches152.4 cm41 inches104.14 cm24 inches60.96 cm
Whirlpool Bathtub60 inches152.4 cm32 inches to 36 inches81.28 cm to 18 inches to 23-1/4 inches45.72 to 59.055 cm
Corner Bathtub60 inches152.4 cm60 inches152.4 cm22 inches55.88 cm
Freestanding Bathtub55 to 72 inches139.7 to 182.88 cm27 to 32 inches91.44 cm15 to 20 inches38.1 cm to 50.8 cm 
Types of Bathtubs and their sizes how to measure
Types of Bathtubs and their sizes how to measure (homedepot)

Alcove Bathtubs Size

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Standard Alcove Bathtub dimensions

  • Length: 59 3/4” – 152 cm
  • Width: 26 1/8” – 66.3 cm
  • Height: 16 3/4” – 42.5 cm
  • Depth: 19 11/16” – 50 cm
  • Depth (Water): 15 3/4 – 40 cm

Alcoves are three-walled bathrooms. In small bathrooms, this is often the best bathtub location. In tiny bathrooms, the back wall serves as the alcove’s side, and the room’s two long walls function as its ends. It works well in 6-foot-wide bathrooms, the essential minimum for a complete bathroom.

Larger bathrooms may not have enough space for an alcove. In this bathroom, a second partition wall can divide the tub alcove from the toilet alcove. Larger bathrooms provide additional tub placement options.

Alcove bathtubs frequently have an apron. Only the two side ends, and the back of the alcove are exposed. Alcove bathtubs range from 4 1/2 to 6 feet and width from 30 to 36 inches.

54 x 30 Alcove Bathtub in White size and dimensions
54 x 30 Alcove Bathtub in White size and dimensions

Small Alcoves Bathtubs

Although they are uncommon, very small bathtubs are gradually becoming more fashionable, in large part due to the success of the tiny home movement.

Your best option if your bathroom is tiny is to install a shower rather than a tub. However, this site is your best choice if you don’t like the thought of giving up a spa-like bath in your little bathroom:

Length (in)Length (cm)Width (in)Width (cm)Height (in)Height (in)
54 inches 137.16 cm30 inches76.2 cm15 inches38.1 cm

Medium-Sized Bathtubs

This common bathtub size, which suits the natural alcove size in most bathrooms, is installed in millions of bathrooms. It would often use this alcove tub in renovation projects because alternative options would call for a build-out to alter the bathroom’s actual size.

Length (in)Length (cm)Width (in)Width (cm)Height (in)Height (cm)
60 inches152.4 cm32 inches81.28 cm18 inches45.72 cm

Large Bathtubs

This well-liked alcove tub product category extends the normal alcove tub’s length and breadth by an additional foot and a few inches. The tub has been enlarged to allow bigger bathers or two persons. Alternatively, it is the ideal bathtub for those who want extra room to splash about.

Although most natural alcove spaces would not accommodate this long bathtub, it might be a viable alternative for new building projects or remodels that entail relocating walls to create more room.

Length (in)Length (cm)Width (in)Width (cm)Height (in)  Height (cm)  
72 inches182.88 cm36 inches91.44 cm20 inches50.8 cm

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Rectangular Drop-in BathTub in White  size and dimensions
Rectangular Drop-in BathTub in White size and dimensions (homedepot)

Drop-Ins Bathtubs Size

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Drop-in Bathtub dimensions

  • Height: 23.25” – 59 cm
  • Width :31.5” – 80 cm
  • Depth: 19.75” – 50 cm
  • Length: 59.125” – 150 cm
  • Depth (Water): 15 3/4” – 40 cm

The drop-in tub fits into a built deck and has a tiled top and sides. These tubs have no factory-finished sides; they drop into a deck cutout like a drop-in sink. This form is used for premium whirlpool baths and two-person tubs.

The drop-in tub deck is occasionally built into an alcove in medium-sized bathrooms. Larger bathrooms can squeeze the tub deck into a corner and leave two sides uncovered. Such tubs can be installed on pedestal decks in very big bathrooms.

Moreover, drop-in bathtubs are excellent for bigger rooms due to the built-in deck. Providing 6 inches of level deck area around a drop-in tub is typical. The deck must be 1 foot longer and broader than the tub.

Length (in)Length (cm)Width (in)Width (cm)Height (in)Height (cm)
45 – 72 inches114.3 – 182.88 cm30 – 32 inches76.2 – 81.28 cm14 – 20 inches35.56 – 50.8 cm

Oval Bathtubs Size

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There are drop-in and free-standing types of oval bathtubs. Oval tubs appear larger all around, but in actuality, they are simply wider, not longer. Also, soaking tubs are shorter than garden tubs.

A standard-size oval bathtub is up to 6 inches wider than an alcove tub that is the same size (60 inches). This necessitates building a wider apron for the tub to rest on for drop-in oval tubs, so keep that in mind when you plan the bathroom’s layout.

Length (in)Length (cm)Width (in)Width (cm)Height (in)Height (cm)
60 inches152.4 cm41 inches104.14 cm24 inches60.96 cm

Whirlpool Bathtubs Size

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Since so many conventional-sized tubs are now equipped with jetted, whirlpool machinery, whirlpool bathtubs often come in typical alcove-ready proportions, even though they may visually appear bigger than usual.

There are additional models of whirlpool bathtubs made for drop-in installation.

The thin acrylic shell has plenty of room to conceal the tubing for the pump unit and the jets. There are six-foot rectangular sizes and high-sided walk-in whirlpool tubs available.

Length (in)Length (cm)Width (in)Width (cm)Height (in)Height (cm)
60 inches152.4 cm32 – 36 inches81.28- 91.44 cm18 – 23 ¼  inches45.72 cm – 59.055 cm

Corner Bathtub Size

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For the main bathroom, corner bathtubs are a terrific alternative, especially if you enjoy nothing more than unwinding in the tub while reading a book or watching a television mounted on the wall. Corner baths are less about getting clean and more about luxury, enjoyment, and treating oneself properly.

In addition, corner bathtubs have a substantial footprint in the bathroom, so it helps to visualize them as square-shaped, not triangular when deciding where to position them.

A corner tub is essentially a square with one corner clipped off. There are several configurations for a corner tub. While some bathtubs have triangular shells, it is also feasible to utilize a drop-in bathtub fitted onto a deck with a triangle form constructed into a room’s corner.

Alcoves can accommodate several standard-sized corner bathtubs, but they will take up a lot of room. These bathtubs work best in rather spacious bathrooms.

Length (in)Length (cm)Width (in)Width (cm)Height (in)Height (cm)
60 inches152.4 cm60 inches152.4 cm22 inches55.88 cm
Free-standing bathtub size and dimensions
Free-standing bathtub size and dimensions

Freestanding Bathtub Size

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Freestanding bathtub dimensions

  • Height: 21.125” – 53.7 cm
  • Width: 29.5” – 75 cm
  • Depth: 16.875” – 43 cm
  • Length: 67.0” – 170 cm
  • Depth (Water): 12 7/8” – 32.7 cm

There are several freestanding bathtubs available, ranging from replicas of the old-style clawfoot bathtubs to ultramodern pedestal tubs, in addition to the standard-type bathtub that is placed into an alcove or a drop-in design that is mounted into a built deck.

It’s standard practice to leave an additional 3 inches around the tub’s ends and 4 inches between the tub’s side and the wall when using a standalone tub. Thus, this tub must be roughly 6 inches shorter than the alcove’s width if you wish to fit it into the available area (3 inches at both the head and foot of the tub).

In other words, use a footprint size that is 6 inches longer and 4 inches broader than the tub’s real measurements when deciding where to place it in the room.

Length (in)Length (cm)Width (in)Width (cm)Height (in)Height (cm)
55 – 72 inches139.7 – 182.88 cm27 – 32 inches68.58- 81.28 cm15 – 20 inches38.1- 50.8 cm

How to Choose the Right Bathtub Size

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The best size of your bathtub is an additional essential factor. Size is crucial since your house might not require a larger bathtub if a smaller bathtub would suffice.

Generally speaking, a bigger tub is advised if your house can sustain it and you have the space for it. In the case of freestanding and corner bathtubs, if you have the necessary room, by all means, go with those designs.

However, alcove, drop-in, and soaking could be more appropriate for you if your area is more constrained. A larger bathtub may appear more attractive on the surface, but it will also come with a higher water bill because it takes more water to fill it up than a smaller size.

Bathtub Side Clearance dimensions

  • Clearance Width (Comfortable):  44” – 112 cm
  • Clearance Width (Recommended):  30” – 76 cm
  • Clearance Width (Minimum): 22” – 56 cm
  • Bathtub Height: 20″-24” – 51-60 cm

Learn more about how to choose the Bathtub and their sizing (video)

How To Choose A Bathtub by Build with Ferguson

Frequently Asked Questions

1. What is the standard measurement for a bathtub?

The typical dimensions of a bathtub are 30 to 32 inches in width, 60 inches in length, and 18 inches in height.

2. Can two individuals fit in a typical tub?

Whether or whether they can fit depends on their size. A 60-inch tub could suit certain people, but they might not be comfortable there. Additionally, if it is a typical alcove-style tub, one individual might not like the faucet sticking out towards the back of their head or torso.

For a two-person tub, you might want to look at models more than 66 inches long, 33 inches broad, and 22 inches tall. Also, think about installing faucets with centers along one long end.

3. What is a suitable soaking tub depth?

Most people consider a minimum depth of 14 to 15 inches, which is generally deep enough to cover most people, to be the optimal water depth measurement.

This bare minimum is satisfied by regular tubs. Japanese soaking tubs often have deeper interiors, reaching depths up to 22 inches.

4. What size bathtub do you need for a 6 feet person?

People around 6 feet tall are likely to find a tub with a depth of 1800 millimeters the most comfortable. However, this is not a hard and fast rule and depends just as much on the specific tub as it does on the individual’s expectations.

5. What is the smallest bathtub?

The smallest freestanding tub is a mere 48 inches, equivalent to four feet in length. This tub is ideal for use in bathrooms devoted to children and can even accommodate people of normal height.

6. What is the size of a 2-person bathtub?

Standard dimensions for a freestanding bathtub that can accommodate two persons. A bathtub that is suitable for two people and has a medium size measures around 66.9 inches in length, has a width of 33.5 inches, and has a height of 22 inches.

The depth of the largest of the bathtubs is classified as medium size, measuring 70 inches, while its width measures 35.4 inches, and its height measures 22.5 inches.

7. What design should you have for your bathtub?

The solution decides whether a cheap, basic design will do or whether you’ll need anything with bells and whistles. A whirlpool or air bath includes jets or channels that give massaging air, whereas a regular soaking tub just gets filled with water.

The only extras commonly seen in soaking bathtubs are armrests or headrests, grab bars, and slip-resistant floors.

More amenities, such as adjustable jets, ambient underwater lighting, aromatherapy features, heated fans, and automatic cleaning systems, are available with whirlpools, air-bath, or combination tubs. Your tub will cost more the more intricate it is.


A bathtub should be cozy, abundant, and practical as a leisure center. Determine the size of your bathroom before choosing the bathtub for it. Make sure the bathtub is the right size and complements the style and decor of your bathroom, in addition to its size.

Do consult a skilled bathroom installer because not every situation will be appropriate for this situation. There may be instances where the wall-to-wall length and bath measurements are incongruent even after removing all tiles. This could need channeling some of the walls out. Once more, a skilled bathroom installer can help you with this.

After considering everything, keep exploring if you still have trouble locating a bath that fits your area and do not want to do any structural work. For every area, there is a bath size. Sure, you’ll have to hunt a little more, but ultimately your diligence will pay off, and you’ll find the ideal bath for your needs and the available space.

If you need help choosing the right bathtubs that fit your needs, comment below. We are happy to help you!

Picture in this post is by R-Architecture on Unsplash

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