Convert BTU inch per hour per square foot per degree Fahrenheit to Watt per centimetre kelvin

Convert BTU inch per hour per square foot per degree Fahrenheit (BTU·in/(h·ft²·°F)) to Watt per centimetre kelvin (W/(cm·K)) instantly and accurately.

Conversion Formula

W/(cm·K) = BTU·in/(h·ft²·°F) × 0.001442278889

About BTU inch per hour per square foot per degree Fahrenheit

The BTU·in/(h·ft²·°F) equals (1055.05585262 × 0.0254 × 9)/(3600 × 0.09290304 × 5) W/(m·K) ≈0.1442 W/(m·K). The standard US k-factor unit for insulation per ASTM C177, C335, and C518. Mineral wool ≈0.25; expanded polystyrene ≈0.24; polyurethane foam ≈0.14 BTU·in/(h·ft²·°F). 1 BTU·in/(h·ft²·°F) ≈0.1442 W/(m·K).

About Watt per centimetre kelvin

The watt per centimetre kelvin (W/(cm·K)) equals exactly 100 W/(m·K). Used for highly conductive materials in electronics and cryogenics: silver ≈4.29, copper ≈3.85, aluminium ≈2.05 W/(cm·K); synthetic diamond ≈22 W/(cm·K). Common in semiconductor and power device literature where component dimensions are centimetre-scale. 1 W/(cm·K) = 100 W/(m·K).

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