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

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

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Watts per square meter-kelvin
0.51 W/(m²·K)

0.09 BTU/(h·ft²·°F) = 0.51 W/(m²·K)

Also equals

How it works

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

One BTU per hour-square foot-degree Fahrenheit is about 5.67826334 watts per square meter-kelvin, so multiplying by 5.67826334 turns BTU per hour-square foot-degree Fahrenheit into watts per square meter-kelvin. For example, 0.3 BTU/(h·ft²·°F) is about 1.703 W/(m²·K).

  1. Multiply by 5.67826334 0.09 × 5.67826334 = 0.51 W/(m²·K)

Nearby values

BTU per hour-square foot-degree Fahrenheit Watts per square meter-kelvin RSI (metric R-value) Kilocalories per hour-square meter-degree Celsius
0.06 BTU/(h·ft²·°F) 0.34 W/(m²·K) 2.94 0.29
0.07 BTU/(h·ft²·°F) 0.4 W/(m²·K) 2.52 0.34
0.08 BTU/(h·ft²·°F) 0.45 W/(m²·K) 2.2 0.39
0.09 BTU/(h·ft²·°F) 0.51 W/(m²·K) 1.96 0.44
0.1 BTU/(h·ft²·°F) 0.57 W/(m²·K) 1.76 0.49
0.11 BTU/(h·ft²·°F) 0.62 W/(m²·K) 1.6 0.54
0.12 BTU/(h·ft²·°F) 0.68 W/(m²·K) 1.47 0.59

Printed from rocketcalc.io/heat-transfer/us-u-factor-to-metric-u-value/0.09