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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
1.48 W/(m²·K)

0.26 BTU/(h·ft²·°F) = 1.48 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 0.26 × 5.67826334 = 1.48 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
0.23 BTU/(h·ft²·°F) 1.31 W/(m²·K) 0.77 1.12
0.24 BTU/(h·ft²·°F) 1.36 W/(m²·K) 0.73 1.17
0.25 BTU/(h·ft²·°F) 1.42 W/(m²·K) 0.7 1.22
0.26 BTU/(h·ft²·°F) 1.48 W/(m²·K) 0.68 1.27
0.27 BTU/(h·ft²·°F) 1.53 W/(m²·K) 0.65 1.32
0.28 BTU/(h·ft²·°F) 1.59 W/(m²·K) 0.63 1.37
0.29 BTU/(h·ft²·°F) 1.65 W/(m²·K) 0.61 1.42

Printed from rocketcalc.io/heat-transfer/us-u-factor-to-metric-u-value/0.26