Looking to install a freestanding tub in your bathroom, but confused about how to choose the right size? No worries! In this guide, we'll show you how to easily choose the perfect tub size for your bathroom space, usage patterns, and comfort, so you don't end up buying the wrong one.

Measure Your Space

The first step to buying a freestanding tub is to know the measurements of your bathroom. Many people are impressed by the tub and buy it, only to realize later that it doesn't fit the space properly. It is important to take each of the following measurements—otherwise there will be trouble with the installation.

Length

The length of the tub wall measures up to Standard freestanding tubs, which are commonly 55 to 72 inches tall. If your bathroom is 7 feet or longer, a 66-72 inch tub will fit comfortably. In a 6.5-foot-long bathroom, you can fit a 60-inch tub, but must maintain clearance all around.

• Leave at least 6 inches of space at the head and foot of the tub to accommodate fittings and custom shelving.

Width

The width of the tub is usually 27 to 32 inches is but keep in mind, if you opt for a larger size sleeper or double-ended tub, they can be as wide as 34–36 inches. A 60x30 inch tub is sufficient for a typical single user bathroom.

• Knowing how far the tub protrudes from the wall will help you position other fixtures (faucet, shower panel) correctly.

Height

The height of the tub is usually 20–24 inches becomes. If you are using for elderly people or children, you can choose something under 20 inches.   A deep soaking tub at 24 inches offers a full-body soak, but may be harder to climb out of. Sit naturally—knee-level comfort matters!

• Check the height of your knees—the more natural you can sit, the more comfortable you'll be.

Doorways and Hallways

Many understand when bringing the tub to the bathroom, it does not enter through the door! Before installation your Bathroom doors, hallways and curved corridors, take measurements.
Standard interior door widths are approximately 30–32 inches. If the tub is 34 inches wide, insert it sideways.

•  Ask the seller before delivery if the tub will come without packaging.

Floor Support

Cast iron tubs look majestic, but are heavy—eg: a 72-inch cast iron tub 300–400 kg May be in waterlogged state. If you have a bathroom on the second floor, check the load bearing capacity (PSF – pounds per square foot) of the wooden floor joists first.

•  It is important to consult a structural engineer or plumber to install a heavy tub.

Focus on Comfort and Bathing Style

When choosing a tub size, don't just measure outside. Your bathing style and comfort It is also important how much is getting priority. Many people decide on the external size of the tub, but are not comfortable with the small space inside. In this part we will see how to select the best tub by understanding the right interior space, water depth and usage pattern.

Interior Dimensions

No matter how large the outside dimensions of the bathtub are, actual comfort depends bathing well or inner space on If you like to sit up straight or shower with your legs spread, then at least 45–50 inches inside length need  A 60 inch exterior length tub typically has a 45–48 inch interior.

• The inside length of the tub is at least 6 inches more than your body height to comfortably recline.

Water Depth

The depth of the water determines how far you can sink. Most tubs have an overflow drain, so the actual usable depth Between 14–18 inches.  If you want to sink up to the chest, a depth of at least 17 inches is needed. Slipper tubs are usually deep.

• For those who prefer deep showers, check if the overflow drain is adjustable. You can hold more water in it.

Bathing Position

How do you shower—sitting up, not reclining? Tab accordingly Back support and rim angle must see Oval tubs or slipper tubs offer more reclining facilities.  For those who spend long hours reclining to study or relax, the 120° back angle sleeper tub is perfect.

• If possible, sit in the showroom and see how you feel—because it's all about your comfort.

One vs Two Person Use

Not all tubs are intended for single use. Double-ended or double-sleeper tubs can seat two people comfortably—either with a faucet in the middle or on one side. 72x36 inch tubs are usually comfortable for two people. But 60x30 inch tub is enough for one person only.

• If you're buying for a couple or family to share, consider both space and interior depth.

Allow for Space and Functionality

Installing a freestanding tub isn't just about getting a large bathtub—it's also important to have enough space around it, install a faucet or shower fixture, and ensure comfortable movement while bathing. In this part we will know how much space to keep around the tub and how to keep it functional.

Clearance

No matter how beautiful the style, if there is not enough space around the tub, use is not effortless. At least you are in front and on the side of the tub 12–20 inches Leave space so that:

• Can be walked
• can be cleaned
• Technicians can easily provide service

 A 60x30 inch tub is comfortable if you put it in a 5x7 foot bathroom, leaving at least 18 inches of space in front and on one side. If there is a gap with the wall behind the tub, you will get great look and functional benefits by placing LED strip light or floating shelf there.

Fixtures

With your freestanding tub Faucet, shower head, and towel rack Where to sit—this must be decided before installation.

3 types of faucet options:

1. Wall-Mounted: mounted on the wall
2. Deck-Mounted: Attached to the rim of the tub
3. Freestanding Faucet: Separate unit—placed next to the tub

If your tub doesn't have a pre-drilled faucet hole, get a freestanding faucet—which requires floor plumbing. Faucet and overflow drain should not face each other. It reduces water spillage and reduces the risk of slipping.

Ergonomics

No matter how beautiful the tub is, if it's difficult to get out and about, it's not a pleasant experience. That's why tub height, rim width, and in-out step all need to be taken into account.
For 20-22 inch tubs you need to raise your knees a bit higher. But 17–18 inch tubs are convenient for seniors and kids.

• Optionally, you can install a nonslip bathtub step or handgrip, which increases both safety and comfort.

4. Choose the Right Shape & Material

Even after deciding on the size of the tub, you're not quite ready—shape & material Selection is equally important. The shape of the tub not only changes the look of your bathroom, it also affects your bathing experience. Again, if the material is not right, you may face problems in terms of weight, heat retention, or cleanliness.

Shape

Freestanding tubs come in a variety of shapes, each bringing their own benefits. Below are some popular shapes and their uses:

Oval Tub

• The most common and balanced design
• Suitable for small and medium bathrooms
• Suitable for reclining and relaxing
  
  

Slipper Tub

• One or both sides are elevated
• Comfortable for a long bath or reading a book
• Spectacular and premium look

Rectangular Tub

• Fits with modern design
• Convenient to keep next to the wall
• Often there are built-in shelves or attached storage

Double-Ended Tub

• Equal support on both sides
• Ideal for couples bathing
• Fawcett is in the middle

If your bathroom is narrow, an oval or slipper tub gives a slim and elegant look. But rectangular tubs are more suited to large, open-concept bathrooms.

Material

The tub's material determines its weight, heat retention, price, and how easy it is to clean—everything. Here are some popular materials:

Acrylic

• Light, economical, and easy to clean
• Hot water can last longer
• Available in different designs and colors
  Example: 60x30 inch acrylic tub weighs only 50–70 kg, easy to install.

Cast Iron

• Extremely durable and excellent in heat retention
• Very heavy—may exceed 300 kg
• Once installed it lasts for years

Example: A 72x36 inch cast iron tub can weigh up to 400 kg with water.

Stone Resin / Solid Surface

• Very premium look and touch
• Medium weight and heat retention much like cast iron
• The price is a bit high

Example: A 65-inch solid surface tub can cost anywhere from $1500–$3000.

Copper / Stainless Steel

• Unique look and antibacterial properties
• Price is high as it is handmade
• Maintenance is high

If you have limited floor support or want a simple installation solution, then acrylic tub is the safest choice.

Freestanding Tub Size Guide (Quick Reference Chart)

Check out this chart to understand at a glance the appropriate tub sizes for different users. This will make it easy to decide according to your bathroom size and personal habits.

Tub Length (inches)	Bathroom Size	Ideal For
54"–60"	Small bathroom (5x7 ft)	Single-user, space-saver tub
61"–67"	Medium Bathroom (6x8 ft)	Comfortable single use
68"–72+"	Large Bathroom (8x10+ ft)	Couple, tall man, deep soaking session

If you have a window or niche in your bathroom, you can use windows or niches for a smart space with wall-mounted fixtures or towel racks.

Frequently Asked Questions 

What size freestanding tub should I get?

The size of the tub depends on the dimensions of your bathroom, personal needs, and the type of use. The standard size is 60 inches, which fits most homes.

What to look for when buying a freestanding tub?

Space, interior length, water depth, faucet options, and materials—all these aspects are important to consider.

What is the most comfortable freestanding bathtub shape?

Slipper and double-ended tubs are the most comfortable because they have more back-support and recline on both sides.

What is the best depth for a freestanding tub?

Varies from person to person, however, 15–20 inches actual soaking depth most ideal Deeper tubs can be submerged up to chest-level.

Expert Tips to Avoid Common Mistakes

Many people usually make mistakes while buying freestanding tubs, which lead to trouble later. You can avoid that mistake by following these tips:

• Don't mistake the doorway clearance: Before measuring the size of the tub, make sure that it will fit through the doors and corridors of your house.
  
  
• Calculate water heater capacity: Check if the heater is big enough to heat the water if you have a deep or large tub.
  
  
• Check floor strength: Check if the floor support is good when installing heavy cast iron tub especially if it is on the second floor.
  
  
• Compare plumbing and faucets: Make sure the faucet type (wall, deck, freestanding) matches your tub.
  
  
• Get professional installation done: Must be installed by an experienced plumber rather than by yourself.
  

Need Help Choosing the Perfect Tub?

Need help choosing the right freestanding tub for your bathroom?
Royal Bath Place has an expert team to help you select the best tub for your space, budget and needs.
Get in touch today—talk to us and buy with confidence.

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✍️ Written by Moe Kazem
Owner of Royal Bath Place | Serving Florida homeowners since 2016