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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
1.7 W/(m²·K)

0.3 BTU/(h·ft²·°F) = 1.7 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 0.3 × 5.67826334 = 1.7 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
0.27 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
0.3 BTU/(h·ft²·°F) 1.7 W/(m²·K) 0.59 1.47
0.31 BTU/(h·ft²·°F) 1.76 W/(m²·K) 0.57 1.51
0.32 BTU/(h·ft²·°F) 1.82 W/(m²·K) 0.55 1.56
0.33 BTU/(h·ft²·°F) 1.87 W/(m²·K) 0.53 1.61

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