Tools
Free calculators and interactive tools from Baltic Spa.
Sauna Stones Calculator: How Many Kg of Stones Do You Need?
Free sauna stones calculator: enter your electric heater's kW or your wood stove size and get the recommended stone weight in kg, plus how many boxes to buy.
ReadIce Bath Chiller Size Calculator: What Size Do You Need?
Free calculator: enter your tub volume and target temperature to work out the cooling capacity (watts and BTU/hr) your ice bath chiller needs, with a margin for heat gain.
ReadSauna Ventilation Calculator: Vent Size and Airflow
Size your sauna vents in seconds. Enter the cabin dimensions for the airflow in m³/h and litres a second, plus the free area and duct size each vent needs.
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Tools
Sauna Heater Size Calculator: What kW Heater Do You Need?
Free sauna heater size calculator: enter your cabin dimensions and we work out the kW heater you need, with the right allowances for glass and uninsulated walls.
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Tools
Sauna Running Cost Calculator: What Does a Sauna Cost to Run in the UK?
Free UK sauna running cost calculator: enter your heater kW, electricity rate and how often you use it to see the cost per session, per week and per year.
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Tools
Ice Bath Ice Calculator: How Much Ice Do You Need?
Work out exactly how much ice you need for an ice bath: enter your tub volume, starting water temperature and target temperature for the answer in kilograms and bags.
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Tools
Sauna Cladding Calculator: How Many Timber Boards Do You Need?
Sauna cladding calculator for a DIY build: enter your room size and board width to get the square metres and number of tongue-and-groove boards, with a cutting waste allowance.
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Tools
Sauna Heat-Up Time Calculator: How Long Does a Sauna Take to Heat Up?
Free sauna heat-up time calculator: enter your heater kW, cabin size, target temperature and insulation to see roughly how many minutes before your sauna is ready.
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Tools
Sauna Heater Electrical Supply Calculator: Plug, Fuse and Cable Size
Free UK calculator: enter your sauna heater's kW rating and supply voltage to see its current draw in amps, whether it can run off a 13A plug or needs hardwiring, and the typical fuse and cable size an electrician will fit.
ReadSauna Capacity Calculator: How Many People Fit in a Sauna?
Free sauna capacity calculator: enter your cabin's internal size and bench layout and we work out how many adults it comfortably seats, how many can lie down, and the bench length you have.
ReadSauna and Cold Plunge Session Planner: Time Your Rounds
Free contrast-therapy planner: set your number of rounds, sauna time, cold plunge time and recovery, and get a timed schedule with total heat and cold exposure.
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