Underfloor Heating Calculator
Estimate system power, cable length or mat area, and monthly energy usage. The calculator accounts for floor finish, heating mode and heated coverage.
Underfloor Heating Calculator
Estimate heating power, cable length or mat area, and monthly energy consumption.
Usually 70–90% (leave zones under furniture unheated)
Typical mats: 130–160 W per m²
Thermostat usually keeps 50–70% average load
Example: 0.15 USD/kWh. Cost is indicative.
Next step after underfloor heating
Once coverage and power are set, the usual follow-up is wet-zone ventilation or a cleaner engineering budget.
What the calculator includes
- Floor finish. Tile, laminate, vinyl and wood have different recommended power levels.
- Heating mode. Comfort heating and primary heating require different output assumptions.
- System type. Choose cable or mat mode and estimate the correct quantity for each system.
- Energy usage. Hours, days and average thermostat load are included in the monthly estimate.
Typical guidance: 150–180 W/m² for tile, 120–160 W/m² for laminate or vinyl, and 100–140 W/m² for wood.
A thermostat usually keeps average load around 50–70% with 5–8 hours of daily operation.
Compare cable length and mat area in one flow and adjust the result to your installation method.
Simple instructions
- Enter the room area and heated coverage, usually 70–90% of the room.
- Choose the floor finish, heating mode and the floor below.
- Pick cable or mat mode and enter the selected product power.
- Set hours, days and average load to review power, cable or mat quantity, and energy usage.