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BTU per hour-square foot to watts per square meter

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

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Watts per square meter
68.45 W/m²

21.7 BTU/(h·ft²) = 68.45 W/m²

Also equals

How it works

W/m² = BTU/(h·ft²) × 3.15459075

One BTU per hour-square foot is about 3.15459075 watts per square meter, so multiplying by 3.15459075 turns BTU per hour-square foot into watts per square meter. For example, 300 BTU/(h·ft²) is about 946.4 W/m².

  1. Multiply by 3.15459075 21.7 × 3.15459075 = 68.45 W/m²

Nearby values

BTU per hour-square foot Watts per square meter Kilocalories per hour-square meter Kilowatts per square meter
1.7 BTU/(h·ft²) 5.36 W/m² 4.61 0.01
11.7 BTU/(h·ft²) 36.91 W/m² 31.76 0.04
21.7 BTU/(h·ft²) 68.45 W/m² 58.9 0.07
31.7 BTU/(h·ft²) 100 W/m² 86.04 0.1
41.7 BTU/(h·ft²) 131.55 W/m² 113.19 0.13
51.7 BTU/(h·ft²) 163.09 W/m² 140.33 0.16

Printed from rocketcalc.io/heat-flux/btu-per-h-ft2-to-w-per-m2/21.7