Skip to content

Watts per square meter to BTU per hour-square foot

Convert watts per square meter to BTU per hour-square foot, with the math shown step by step.

Favorite
BTU per hour-square foot
71.7 BTU/(h·ft²)

226.18 W/m² = 71.7 BTU/(h·ft²)

Also equals

How it works

BTU/(h·ft²) = W/m² ÷ 3.15459075

One BTU per hour-square foot is about 3.15459075 watts per square meter, so dividing by 3.15459075 turns watts per square meter into BTU per hour-square foot. For example, 1,000 W/m² is about 317 BTU/(h·ft²).

  1. Divide by 3.15459075 226.18 ÷ 3.15459075 = 71.7 BTU/(h·ft²)

Nearby values

Watts per square meter BTU per hour-square foot Kilocalories per hour-square meter Kilowatts per square meter
26.18 W/m² 8.3 BTU/(h·ft²) 22.53 0.03
126.18 W/m² 40 BTU/(h·ft²) 108.57 0.13
226.18 W/m² 71.7 BTU/(h·ft²) 194.61 0.23
326.18 W/m² 103.4 BTU/(h·ft²) 280.65 0.33
426.18 W/m² 135.1 BTU/(h·ft²) 366.69 0.43
526.18 W/m² 166.8 BTU/(h·ft²) 452.74 0.53

Printed from rocketcalc.io/heat-flux/w-per-m2-to-btu-per-h-ft2/226.18