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U-factor (W/m²·K) to U-factor (BTU/h·ft²·°F)

Convert U-factor (W/m²·K) to U-factor (BTU/h·ft²·°F), with the math shown step by step.

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BTU per hour-square foot-degree Fahrenheit
0.09 BTU/(h·ft²·°F)

0.5 W/(m²·K) = 0.09 BTU/(h·ft²·°F)

Also equals

How it works

BTU/(h·ft²·°F) = W/(m²·K) ÷ 5.67826334

One BTU per hour-square foot-degree Fahrenheit is about 5.67826334 watts per square meter-kelvin, so dividing by 5.67826334 turns watts per square meter-kelvin into BTU per hour-square foot-degree Fahrenheit. For example, 1.4 W/(m²·K) is about 0.2466 BTU/(h·ft²·°F).

  1. Divide by 5.67826334 0.5 ÷ 5.67826334 = 0.09 BTU/(h·ft²·°F)

Nearby values

Watts per square meter-kelvin BTU per hour-square foot-degree Fahrenheit R-value (US) Kilocalories per hour-square meter-degree Celsius
0.2 W/(m²·K) 0.04 BTU/(h·ft²·°F) 28.39 0.17
0.3 W/(m²·K) 0.05 BTU/(h·ft²·°F) 18.93 0.26
0.4 W/(m²·K) 0.07 BTU/(h·ft²·°F) 14.2 0.34
0.5 W/(m²·K) 0.09 BTU/(h·ft²·°F) 11.36 0.43
0.6 W/(m²·K) 0.11 BTU/(h·ft²·°F) 9.46 0.52
0.7 W/(m²·K) 0.12 BTU/(h·ft²·°F) 8.11 0.6
0.8 W/(m²·K) 0.14 BTU/(h·ft²·°F) 7.1 0.69

Printed from rocketcalc.io/heat-transfer/metric-u-value-to-us-u-factor/0.5