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What Size Sauna Do I Need: Guide to Your Perfect Fit

Estimated reading time: 8 minutes

Imagine stepping into a warm, comforting space where the day’s stresses melt away and your body rejuvenates.

That’s the magic of a sauna. But before you dive into this world of relaxation, there’s a crucial question to answer: “What size sauna do I need?” 

Whether you’re looking to create a personal oasis or a communal retreat, understanding sauna dimensions is key.

Let’s embark on a journey to discover the perfect sauna fit for your home, ensuring every steamy session is nothing short of perfection.

Key Takeaways

  • Sauna Dimensions: Size depends on space, needs, and sauna type (traditional or infrared).
  • Standard Sizes: Traditional saunas are larger; both types have a 73 to 84-inch ceiling height.
  • Capacity-Based Sizes: Ranges from single-person (3×3 feet) to 10+ person saunas (starting from 8×8 feet).
  • Specific Dimensions: Sauna rooms for 1-2 people range from 3×3 to 4.5×4.5 feet. Benches require 2 feet per person. Doors typically measure 23-30 inches in width.
  • Choosing the Right Sauna: Consider user count, sauna type, budget, and space.

Making the Right Choice

Venturing into the world of saunas, you’re presented with a myriad of choices, each as enticing as the next. To tailor your sauna experience to your desires, making informed decisions is paramount.

Here’s a streamlined guide to help you make the optimal choice:

  • Determine the Type of Sauna: Start by selecting between a traditional sauna or an innovative infrared sauna. Traditional ones use ambient heat, while infrared models directly warm your body, offering a distinct experience.
  • Factor in Your Budget: Before getting caught up in the allure of various features, set a clear budget. This will not only streamline your options but also ensure that your chosen sauna aligns with your financial capabilities.
  • Evaluate Your Needs: Dive into introspection. Do you seek a personal relaxation hub, a communal space for family, or a versatile room for activities like yoga? Your envisioned use will steer your choice toward the perfect fit.
  • Space Constraints: Assess the space you’ve earmarked for your sauna. While you might be drawn to grand designs, choosing a size that suits your space is essential, ensuring sufficient room for ventilation and accessibility.
  • Future Considerations: Think long-term. Your current preference might lean towards a solo experience, but life evolves. Growing families or the idea of communal sauna sessions might make it worth investing in a slightly larger model.
  • Quality Over Size: An essential mantra in sauna selection. Always prioritize the quality of construction and materials. A smaller yet well-constructed sauna often trumps a larger one of inferior quality.

By strategically weighing each factor, you’ll not only select the right size but also craft a sauna experience that seamlessly melds with your lifestyle.

Standard Sauna Dimensions

Understanding the standard dimensions of saunas is crucial when considering installation, especially when determining the fit for your available space.

Here’s a breakdown of the standard dimensions for both traditional and infrared saunas:

Traditional Sauna

Traditional saunas provide a time-honored experience, utilizing heat generated by pouring water onto heated rocks, which in turn warms the surrounding air.

  • Standard Dimensions: Traditional saunas typically have a more expansive interior, reflecting their design to create a warm environment through steam and heated air.
  • Ceiling Height: The standard ceiling height for traditional saunas is 73 to 84 inches, ensuring an even heat distribution throughout the space.

Infrared Sauna

In contrast, infrared saunas use infrared panels to deliver heat. Instead of warming the air, these panels emit infrared light, which is absorbed directly by the skin, offering a distinct type of relaxation.

  • Standard Dimensions: Infrared saunas are generally designed to be more compact, making them a suitable choice for locations with limited space.
  • Ceiling Height: Infrared saunas also adhere to the standard ceiling height of 73 to 84 inches, ensuring users have ample headroom while enjoying the benefits of infrared heating.

Sauna Sizes Based on Capacity

Choosing the right sauna size is essential for maximizing comfort and ensuring a premium relaxation experience.

Here’s a detailed guide on sauna dimensions tailored to different capacities:

Personal Oasis: Single Person Sauna

  • Dimensions: Ranges between 3 x 3 feet to 3.5 x 3.5 feet with over 6 feet tall.
  • Ideal For: Those seeking a private escape. Perfect for compact spaces or individuals living solo.

Duo Comfort: 2-Person Sauna

  • Dimensions: Typically between 3 x 3 feet to 4.5 x 4.5 feet, over 6 feet tall.
  • Ideal For: Couples desiring a shared rejuvenation space or those who appreciate a bit more room to lounge.

Trio Retreat: 3-Person Sauna

  • Dimensions: Often measure between 3.5 x 3.5 feet to 6 x 6 feet with over 6 feet tall.
  • Ideal For: Small families or friends who enjoy bonding in a warm, cozy setting.

Family Bonding: 4-Person Sauna

  • Dimensions: Typically measure between 3.5 x 3.5 feet to 6.5 x 6.5 feet with over 6 feet tall.
  • Ideal For: Medium-sized families or groups of friends. Strikes a balance between space and intimacy.

Social Circle: 6-Person Sauna

  • Dimensions: These spacious saunas typically span between 5 x 5 feet to 8.5 x 8.5 feet with over 6 feet tall.
  • Ideal For: Larger families or social butterflies who love hosting. It provides room for everyone without feeling cramped.

Entertainer’s Delight: 8-Person Sauna

  • Dimensions: These spacious saunas often measure between 6 x 6 feet to 9 x 9 feet with over 6 feet tall
  • Ideal For: Those who frequently host gatherings or parties. Ensures a luxurious and communal sauna experience.

Grandeur Lounge: 10+ Person Sauna

  • Dimensions: Customized to fit the need, starting from 8 x 8 feet and expanding as required.
  • Ideal For: Commercial establishments, luxury estates, or anyone looking to create a spa-like experience for larger groups.

Specific Sauna Dimensions

When planning your sauna, it’s essential to consider specific dimensions to ensure optimal comfort and functionality.

Here’s a refined breakdown of some critical sauna dimensions:

Sauna Bath Room Size

If you’re thinking of integrating a sauna into your bathroom, here’s what you need to know:

  • Dimensions: For those looking to accommodate one or two people, sizes typically range from 3 by 3 feet up to 4.5 by 4.5 feet. This ensures a cozy yet comfortable space for relaxation within the confines of your bathroom.

Sauna Bench Dimensions

The bench is more than just a seat; it’s where you’ll spend most of your time relaxing and soaking in the heat.

  • Bench Space: Plan for approximately 2 feet of bench space for each individual. If you’re designing for group sessions or multiple users, a total of 6 feet of wall-to-wall bench space is recommended to ensure everyone has ample room.

Sauna Bench Height

Different bench heights cater to varied preferences, allowing users to choose their optimal heat level.

  • Upper Bench: Positioned closer to the ceiling where it’s hotter, the upper bench should stand 36 inches high.
  • Lower Bench: Offering a cooler experience, the lower bench should be set at a height of 18 inches.

Sauna Door Dimensions

The sauna door is not only an entry and exit point but also plays a role in maintaining the sauna’s internal temperature.

  • Standard Width: A typical sauna door width is around 23 to 30 inches, ensuring easy access while preserving the internal environment.
  • Height: Consistent with the overall design, sauna doors usually have a height of around 6 to 7 feet, aligning with the standard ceiling height of 84 inches.


What is the average size of a sauna?

The average size of a sauna varies based on capacity. For instance, a single-person sauna ranges between 3 x 3 feet to 3.5 x 3.5 feet, while saunas for larger groups, like 10+ people, start from 8 x 8 feet and can be customized further.

What size sauna for yoga?

You’ll want a sauna that provides ample space to stretch and move for yoga. A size of 6 by 8 feet or larger is recommended.

What is the optimal sauna height?

The standard ceiling height for traditional and infrared saunas is 73 to 84 inches. If you are tall, it’s essential to consider this range in your buying decision to ensure comfort and ample headroom.

How thick do sauna walls need to be?

Sauna walls should be thick enough to retain heat effectively, typically ranging from 2 to 4 inches thick.

What size should a sauna bench be?

A sauna bench should be around 2 feet in depth per person. If you have the space, a 6-foot bench can accommodate multiple people.

How big of a gap between sauna bench seat boards?

A ½ to ¾ inch gap between sauna bench seat boards is ideal for ventilation and comfort.

What size should a sauna door be?

A typical sauna door width is around 23 to 30 inches, and the height usually aligns with the standard ceiling height of 84 inches, making it about 6 to 7 feet.

How big is the gap under a sauna door?

A gap of ¾ to 1 inch under the sauna door is recommended for proper ventilation.

Do you need a special door for a sauna?

Yes, the choice of door is crucial for a sauna. The best doors use tempered glass for safety. You can opt for a full glass door if you prefer a clear view inside the sauna. However, if you need more privacy, choose a door with only a window, allowing for both privacy and a glimpse of the outside.


Saunas are sanctuaries for relaxation and rejuvenation. Choosing the right size is crucial, whether for personal use or communal gatherings. 

There are distinct differences between traditional and infrared saunas, each with its unique dimensions.

It’s essential to consider all factors, from individual to group capacities to specific bench and door measurements. 

The perfect sauna size ensures an optimal and serene experience for every user.

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