Convert BTU per hour per foot per degree Fahrenheit to Kilowatt per metre kelvin

Convert BTU per hour per foot per degree Fahrenheit (BTU/(h·ft·°F)) to Kilowatt per metre kelvin (kW/(m·K)) instantly and accurately.

BTU per hour per foot per degree Fahrenheit (BTU/(h·ft·°F))
Kilowatt per metre kelvin (kW/(m·K))

Conversion Formula

kW/(m·K) = BTU/(h·ft·°F) × 0.001730734666

About BTU per hour per foot per degree Fahrenheit

The BTU/(h·ft·°F) equals (1055.05585262 × 9)/(3600 × 0.3048 × 5) W/(m·K) ≈1.7307 W/(m·K). Standard US thermal conductivity unit in ASHRAE Handbook and ASTM C1045. Copper: ≈223; carbon steel: ≈26; brick: ≈0.44; glass fibre insulation: ≈0.025 BTU/(h·ft·°F). 1 BTU/(h·ft·°F) = 12 BTU·in/(h·ft²·°F) ≈1.7307 W/(m·K).

About Kilowatt per metre kelvin

The kilowatt per metre kelvin (kW/(m·K)) equals exactly 1000 W/(m·K). Used for exceptionally conductive materials: type IIa diamond ≈2.2 kW/(m·K), isotopically pure ²⁸Si ≈1.0 kW/(m·K), single-crystal graphene > 5 kW/(m·K) at room temperature. Convenient for comparing advanced thermal management and heat spreader materials. 1 kW/(m·K) = 1000 W/(m·K).

Quick Reference Table

BTU per hour per foot per degree Fahrenheit (BTU/(h·ft·°F))Kilowatt per metre kelvin (kW/(m·K))
1 BTU/(h·ft·°F)0.00173073 kW/(m·K)
2 BTU/(h·ft·°F)0.00346147 kW/(m·K)
5 BTU/(h·ft·°F)0.00865367 kW/(m·K)
10 BTU/(h·ft·°F)0.0173073 kW/(m·K)
25 BTU/(h·ft·°F)0.0432684 kW/(m·K)
50 BTU/(h·ft·°F)0.0865367 kW/(m·K)
100 BTU/(h·ft·°F)0.173073 kW/(m·K)

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