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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
1.83 BTU/(h·ft²·°F)

10.4 W/(m²·K) = 1.83 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 10.4 ÷ 5.67826334 = 1.83 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
10.1 W/(m²·K) 1.78 BTU/(h·ft²·°F) 0.56 8.69
10.2 W/(m²·K) 1.8 BTU/(h·ft²·°F) 0.56 8.78
10.3 W/(m²·K) 1.81 BTU/(h·ft²·°F) 0.55 8.86
10.4 W/(m²·K) 1.83 BTU/(h·ft²·°F) 0.55 8.95
10.5 W/(m²·K) 1.85 BTU/(h·ft²·°F) 0.54 9.03
10.6 W/(m²·K) 1.87 BTU/(h·ft²·°F) 0.54 9.12
10.7 W/(m²·K) 1.88 BTU/(h·ft²·°F) 0.53 9.21

Printed from rocketcalc.io/heat-transfer/metric-u-value-to-us-u-factor/10.4