Radiant Floor Heat Calculator

Estimate radiant floor heating materials.

Surface area measurement (length × width for rectangles).
sq ft
Horizontal measurement perpendicular to length.
inches
Rate of energy transfer measured in watts (W).
W/sf

Results

Heating Mat Length:
Calculated heating mat length based on your inputs.
-linear feet
Total Wattage:
Sum of all calculated values.
-watts
Circuit Amperage:
Value expressed as a rate (per unit).
-amps
Reference: NWFA Standards.