Sauna Heater Calculator

Sauna Heater Size

Not sure what size sauna heater you need? You’re in the right place.

This sauna heater power calculator helps you determine the ideal heater size for your sauna. Simply enter your sauna’s internal dimensions and the measurements of any uninsulated surfaces, such as glass walls or doors.

The calculator also factors in whether your sauna is located outdoors, providing a tailored recommendation for optimal performance and comfort.

Sauna Heat-Up Times

The calculator can also estimate how long it will take your sauna to reach 80°C, based on its size and the power of your heater. These times are only estimates, as real-world conditions may vary.

Sauna Heating Calculator

Enter Sauna Depth (m):

Distance from front to back

Enter Sauna Width (m):

Distance across the front

Enter Sauna Height (m):

Floor to ceiling

Enter Uninsulated Wall Length (m):

e.g., full glass wall or door width

Enter Uninsulated Wall Height (m):

Height of glass wall or door

Enter Heater Power (kW):

Optional: used to estimate heat-up time

Enter Ambient Temperature (°C):

Typical outdoor or indoor temp before heating

Is this an outdoor sauna?

Adds extra heating compensation

This infrared sauna power calculator helps you estimate the total wattage needed for your sauna’s infrared heating panels. Simply enter your sauna’s internal dimensions, choose your preferred heat intensity, and indicate whether the sauna is installed indoors or outdoors. The calculator uses real-world performance data to provide an accurate wattage recommendation based on the surface area of your sauna.

Infrared Sauna Power Calculator

Enter Sauna Width (m):

Enter Sauna Depth (m):

Enter Sauna Height (m):

Select Intensity Level: Standard

Is this an outdoor sauna?