Hot Tub Dimensions & Hot Tub Size: A Buyer’s Guide

In this guide on hot tub dimensions, we’ll explore the process of finding the perfect hot tub size to match your space and intended use. From intimate two-person tubs to sprawling 7-person hot tubs, we'll delve into the factors that should influence your decision. So, let's dive into the world of picking the perfect hot tub size. Your relaxation and rejuvenation await!

Picture of a person in a large hot tub for the blog about hot tub size and hot tub dimensions.

Why Hot Tub Size Matters

Hot tubs come in various sizes to cater to different needs. Consider how you intend to use your hot tub. Do you want a private oasis for two or a gathering spot for family and friends? Smaller two-person hot tubs are perfect for intimate moments, while larger eight-person tubs are designed for social gatherings. Choosing the right size ensures that your hot tub aligns with your lifestyle and preferences.

When making your list of must-haves for your new hot tub, you’ll find plenty of options in terms of features, design, price, and of course, size. Hot tub dimensions and hot tub size can greatly impact your overall experience and how well it fits into your lifestyle and space.

1. Space Considerations

Perhaps the most obvious factor in considering hot tub size is the space you’re working with. Before purchasing a hot tub, you must assess the available area for installation. Hot tub dimensions that are too large for your space can result in cramped quarters, limit access for maintenance, and even disrupt the aesthetics of your outdoor area. Conversely, a hot tub that's too small may not provide the comfort or seating capacity you desire.

When choosing a hot tub size for your space, keep in mind that you’ll want at least three feet of accessible space around all sides of the tub. Plus, it’s recommended that you place any water feature at least five feet from any building to reduce the possibility of flood damage. 

2. Social Interaction

Hot tubs are excellent for fostering social interaction and relaxation. When selecting a hot tub, think about how you envision using it with others. Larger hot tubs provide ample seating and room for multiple people to sit comfortably, making them ideal for gatherings, parties, or family time. Smaller hot tubs, on the other hand, are better suited for intimate conversations and quiet moments.

3. Energy Efficiency

The size of a hot tub also affects its energy efficiency. Smaller hot tubs require less water and heating resources, making them more environmentally friendly and cost-effective to operate. If you're concerned about energy consumption and operating costs, a smaller hot tub may be the better choice for you.

4. Maintenance and Upkeep

Maintaining a hot tub is an essential part of ownership. Larger hot tubs typically require more water treatment chemicals, filtration, and cleaning, which can be more time-consuming and costly. Smaller hot tubs are generally easier to maintain due to their reduced water volume and size. Consider your willingness and ability to perform routine maintenance when choosing a hot tub size.

5. Budget Considerations

Hot tub prices vary depending on size, features, and brand. Larger hot tubs tend to be more expensive both upfront and in terms of operating costs. It's crucial to factor in your budget when deciding on the size of your hot tub, taking into account not only the purchase price but also ongoing expenses.

Common Hot Tub Dimensions

Now that you know why hot tub size is so important to take into account, keep that in mind when exploring the different hot tub sizes available on the market today. Let’s take a look at the dimensions of the four most popular sizes of hot tubs—and some of the pros and cons of each to help you narrow it down.

Keep in mind that the hot tub sizes listed below are only estimates. Before purchasing any hot tub for sale, check that model's exact hot tub dimensions to ensure you're buying the right hot tub model from a trusted hot tub brand.

Small Hot Tubs

Small hot tubs, sometimes called compact hot tubs, are usually best suited for anywhere from two to four people. These are perfect for those with limited space or those seeking a cozy, intimate experience. If you have a smaller area like a patio or balcony, or just a cramped backyard, a small hot tub is a great choice. The Orion P&P hot tub is an example of a small hot tub that is most comfortable for 2 people.

A small hot tub typically measures around 5' to 6.5 feet in width and about 2.5' to 3 feet in height.


  • Space-saving and ideal for small outdoor areas.
  • Energy-efficient, as they require less water and fewer heating resources.
  • Easier to maintain due to their smaller size.


  • Limited seating capacity means less room for socializing.
  • Not suitable for large gatherings or parties.

Medium Hot Tubs

Medium-sized hot tubs typically have room to fit between four and six people, making them a versatile choice for families or those who love to entertain. With ample seating and space, they provide a comfortable environment for socializing, relaxation, and hydrotherapy. The Monte Rosa hot tub or the Mont Blanc hot tub are great examples of mid-size hot tubs.

Medium hot tubs typically measure around 6.5' to 7.5 feet in width and 3' to 3.25 feet in height. 


  • Perfect for hosting gatherings and social events.
  • Greater seating capacity ensures more room for family and friends.
  • Offer a variety of seating arrangements, including loungers and bench seats.


  • Requires slightly more space and energy compared to smaller hot tubs.

Large Hot Tubs

For those who have ample space and love to entertain large groups, a large hot tub with room for up to eight people is the way to go. They often feature a variety of seating options to accommodate every member of the party, including deep loungers and therapy seats.

Large hot tubs typically measure between 7.5' to 9 feet in width and 3' to 3.5 feet in height.


  • Ideal for hosting parties, gatherings, or family events.
  • Plenty of seating and space for everyone to enjoy.
  • Offer a wide range of hydrotherapy options and features.


  • Requires a significant amount of space and energy.
  • Higher hot tub costs, both for the hot tub itself and operation.

Extra Large Hot Tubs

An extra-large hot tub, often referred to as a "party-sized" or "oversized" hot tub, is a type of hot tub that is considerably larger than the standard sizes typically available in the market. These hot tubs are designed to accommodate a significantly larger number of people, making them ideal for hosting gatherings, hot tub parties, or providing ample space for relaxation and hydrotherapy. The Olympus hot tub is one of our largest hot tub sizes.

Extra-large hot tubs can fit between 10 and 12 people and can measure up to 8' to 12 feet wide. 


  • Offer plenty of seating space, making them perfect for hosting gatherings, parties, or family events. 
  • Equipped with a variety of seating options, including deep loungers, bench seats, and therapy seats. 
  • With more seating options and jets, extra-large hot tubs offer a wider range of hydrotherapy experiences. 


  • You need a sizable outdoor area that can accommodate both the hot tub and provide sufficient access for maintenance.
  • Require a higher upfront purchase price compared to smaller models. They may also require additional hot tub installation costs, such as reinforced foundations or electrical work.
  • Due to their size and weight, installing extra-large hot tubs can be more complex and may require professional installation services. 

How to Pick the Right Hot Tub Size

You may be torn between a couple of sizes when it’s time to invest in a hot tub of your own. Here are some key factors to consider when picking out the right hot tub size for your needs.

1. Evaluate Your Space

The first step in choosing the right hot tub size is to measure and assess the available space where you plan to install it. Consider the dimensions of your patio, deck, or designated hot tub area. Ensure there's enough room not only for the hot tub itself but also for safe access, maintenance, and any additional features you might want, such as steps or a privacy screen.

2. Consider Your Lifestyle

Your lifestyle plays a significant role in determining the right hot tub size. If you frequently host gatherings or family events, a larger hot tub might be a better fit. On the other hand, if you prefer intimate, quiet moments of relaxation, a smaller hot tub may suffice. Think about how you'll use the hot tub on a regular basis to ensure it aligns with your lifestyle.

3. Assess Maintenance Requirements

Hot tub maintenance is a necessary aspect of ownership. Smaller hot tubs are generally easier and less expensive to maintain due to their reduced water volume and size. If you want a low-maintenance experience, consider a smaller hot tub. Larger hot tubs may require more extensive cleaning, filtration, and chemical treatments. It's smart to do your research to find out how much it costs to run a hot tub based on its electrical requirements.

4. Budget Wisely

Your budget is a significant factor in selecting the right hot tub size. Keep in mind that larger hot tubs typically come with higher upfront costs, increased maintenance expenses, and greater energy consumption. Make sure to consider both the initial purchase price and the long-term operating costs when budgeting for your hot tub.

FAQ: Hot Tub Dimensions and Hot Tubs Size

What is the standard size of a hot tub? 

While there is no set “standard” hot tub size thanks to the wide variation in products on the market and consumer needs, some of the most popular sizes are:

  • 78 inches by 78 inches (6.5 feet by 6.5 feet)
  • 84 inches by 84 inches (7 feet by 7 feet)
  • 94 inches by 94 inches (Around 7.8 feet by 7.8 feet)

Ultimately, the "standard" size of a hot tub depends on your individual needs, space constraints, and preferences. The key is to find a hot tub that suits your lifestyle and provides the comfort and relaxation you desire.

How much does a hot tub of each size cost?

The average price of a hot tub varies depending on the hot tub size, hot tub brand, and hot tub accessories. When taking all of them into account, most people pay between $10,000 - $20,000 for their new spa. 

Keep in mind that this cost will depend on the additional features you opt for, the quality of the tub itself, and even the time of year in which you make the purchase. 

How thick does a slab need to be to support a large hot tub? 

In general, for a large hot tub, a concrete slab with a thickness of 4 to 6 inches is often thick enough. However, the exact thickness should be determined based on factors like soil conditions, concrete strength, and any added reinforcement. Always prioritize safety and compliance with local building codes to ensure the long-term stability and safety of your hot tub installation.

Final Word: Hot Tub Dimensions & Hot Tub Size

The growing popularity of hot tubs means there are more options than ever on the market. That’s good news, as long as you know what to look for and why you’re looking for it. Nowhere is that more true than in the process of picking the right hot tub size for your space. 

Key takeaways:

  • Make sure you have enough space for the hot tub model you choose.
  • Make sure the hot tub size will accommodate your intended use.
  • Make sure you choose an energy-efficient hot tub brand - especially when shopping for large hot tubs.

If you still have any questions when it comes to hot tub size and hot tub dimensions, check out our full hot tub buying guide. Or, if you need help finding luxury hot tubs and swim spas near you, use our dealer locator, shop online, or contact Wellis® Spa at  844-4-WELLIS.

You can even schedule a test soak in one of our Wellis hot tubs at participating hot tub dealers. Simply call ahead to schedule a test soak.

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