Calculators

Which Sauna Is Right for Me?

Answer five quick questions about your space, household, budget and heater preference, then get one specific model and two sensible alternatives.

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Sauna Build Checker

Check heater size, bench height, ventilation, insulation, drainage, door design and material choices before you build.

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Heater Size Calculator

Choose your sauna model and see the heater size it needs, why that size was chosen, and every heater we sell that fits it.

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Heat-Up Time Calculator

See how long your sauna should take to reach löyly temperature, with an honest allowance for heater output, cabin size, construction and the weather outside.

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Running Cost Calculator

Work out simple sauna planning figures including size, setup considerations and practical buying guidance.

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Solar Sauna Calculator

Estimate the solar panels, battery storage, inverter size and setup needed to run your sauna in different countries and climates.

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Sauna Impact Calculator

Estimate sweat loss, heat exposure, heart-work effect, recovery support and weekly sauna volume.

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Sauna Nutrition Tool

Pick the problem you want to support and match your sauna session with useful foods, drinks and minerals.

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ROI Calculator

Estimate how a sauna or outdoor wellness feature could improve booking value and payback time.

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Frequently Asked Questions

Which sauna calculator should I use first when buying a sauna?

Heater size, if you are still choosing. It settles the kW, what your electrics have to handle and which heaters fit. Then running cost tells you what it costs you each week.

Do I need to measure my sauna before using these tools?

Not for heater size, where you pick your model from a list. The running cost calculator and the build checker both want internal depth, width and height in metres.

Do these sauna calculators need an email address or sign-up?

No. They all run in your browser, nothing is sent to us, nothing is stored, and there is no email box or account anywhere in them.

How do I compare two saunas before deciding which to buy?

Run both through heater size and running cost. You will see the difference in kW, in what your electrician has to do and in weekly cost. Send us both and we will confirm it.

Which sauna costs do buyers most often underestimate?

The cable run from fusebox to sauna, and the cold plunge chiller that runs on days nobody gets in. Both have a calculator here, and both cost less to plan than to fix later.