Hot Tub Buying Guide: Typical Hot Tub Dimensions and Sizes


The spa industry has its own standards and specifications. Therefore, hot tub associations set up hot tub dimension standards for hot tub manufacturers to follow in the world. In this article, we’ll cover the most popular sizes on the market and also things to consider before buying a hot tub.

Hot Tub Sizes

There are different types of hot tubs, e.g., some hot tubs are of the same size, but the number of seating may be different. There are the exact sizes of hot tubs, but they have completely different styles and features.

Before you choose a size, you need to keep in mind how many people you are trying to fit in your spa. Will it only be for you and your partner? Or are you planning to invite your friends for leisure time in the hottub? Are there going to be kids coming or your family?

Generally, there are three sizes most manufacturers offer:

  • Small hot tubs: Designed for 2-3 person hot tub
  • Medium hot tubs: Designed for 4-6 person hot tub
  • Large hot tubs: Designed for 7+ person hot tub

The length, width, and breadth of these hot tubs are-

Small hot tubs (2-3 people): 5’4” – 7” L   x 5’4” – 6’8” W x 29” – 35” H

Medium hot tubs (4-6 people): 6’6” – 7’9” L x 6’4” – 7’9” W x 33” – 38.5” H

Large hot tubs (7+ people): 7’ – 9’ L x 7’ – 9’2” W x 36”- 38” H

The sizes, as mentioned above, are the general sizes; there are fewer standard sizes available too. Unlike some brands only manufacture typical sizes, Royal Spas can customize the dimensions according to your specific requirement.

  • Round hot tubs: Designed for 3-5 people. Its diameter is 72” – 84”.
  • Corner hot tubs: Designed for 2-3 people. These spas are triangular in shape and are generally 6’    long.

Small Hot Tubs (2-3 people)

2 person hot tub

There are multiple reasons why you should go for this hot tub size. If you’re looking to minimize the space the hot tub takes up, this is the best option in the market. It is suitable for you and your partner to have some relaxing time together.

Small hot tubs can easily fit in your backyard and cost hundreds of bucks less than the hot tubs bigger in size. Ask yourself if it’s only you and your partner who are going to use this hot tub and won’t have visitors often at your place, then this is the right choice. It will also keep the cost and maintenance of the hot tub under your budget.

Medium Hot Tubs (4-6 people)

6 person hot tub

Medium-sized hot tubs are the most popular hot tubs sold. If you’re a family consisting of four people or, if you have visitors often coming in for a dip, then this hot tub is best for you. You can also go for this size if you’re looking for more personal space to relax in your spa.

Before buying a hot tub, consider the size of the footwell too. The larger the footwell, the more space you get to stretch out your legs.

Large Hot Tubs (7+ people)

7 person hot tub

If you’re looking to hang-out with a large group of people in your spa, then this hot tub is a must-have. The biggest perk of a large hot tub is that you get ample space to relax in. It is perfect for people who have bigger families or a big circle of friends.

If you’re tall and are usually getting congested in smaller hot tubs, then you should definitely buy a large hot tub.

Things to consider before you buy a hot tub

Now that you’re aware of the hot tub size available in the market and might have even selected one according to your preference, the next step is to consider different aspects related to the hot tub.

Ask yourself these questions before buying a hot tub:

  • Where will I install the hot tub?
  • Do I have enough space around the hot tub?
  • Can everybody enter and exit properly from different angles?
  • Do I have enough space around the hot tub for any future maintenance?
  • How many people do I want to fit in my hot tub?
  • How frequently will the hot tub be used and by how many people?

After this introspection, you can choose the best hot tub size that meets all your needs.

best hot tub size

Location: You need to choose a spot large enough to fit your spa and its foundation. Make sure to measure the area where it’ll be located. Knowing how much space a hot tub will occupy in your backyard is crucial for you to select the right shape and size of the hot tub. If you’re confused as to where would be the best location for your spa to function effectively, you can ask your local dealer to visit your place and guide you.

 Delivery: After you determine where you want to place the hot tub, the next part you need to think about is the delivery process. Does the pathway to the fixed location have enough space clearance for a hot tub to pass by without breaking or scratching anything?

hot tub dilivery

So, before you make a deal with the local dealer on the hot tub, measure the pathway so that there’s no hindrance during the delivery of your hot tub. Also, remember that your hot tub is going to be delivered empty so it can also be slanted while passing through any narrow space. Ask your local dealer if they have crane services to lift and place the hot tub on the designated location.

Installation: According to the size you select for your hot tub, the base where you’re going to place, it should equally be strong. All hot tubs require a well-built base. Most of the hot tubs will need a concrete slab which would be necessary to hold the weight of the spa. If you’re planning to place it on the deck, then it should support at least 125lbs per square foot.

It is better that pre-establish a place with everything that is needed for the proper installation because if there is no adequate base for the hot tub, it will not be delivered and installed in time.

Which is the perfect Hot tub for me?

right hot tub sizes

The best way to know which hot tub and what size is the best suited for you is to take your partner or your family to the local spa showroom and get in the hot tubs for the realistic feel. Along with it, try a smaller hot tub and more oversized hot tub than the one you tried. This way, you can make sure which hot tub is the one for you.

Don’t forget to check the size of the footwell and whether you can stretch your legs comfortably without crowding too much. Ultimately, it comes down to your personal preference, which is suited for you and your lifestyle.

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