Convert BTU inch per hour per square foot per degree Fahrenheit to Milliwatt per centimetre kelvin
Convert BTU inch per hour per square foot per degree Fahrenheit (BTU·in/(h·ft²·°F)) to Milliwatt per centimetre kelvin (mW/(cm·K)) instantly and accurately.
Conversion Formula
mW/(cm·K) = BTU·in/(h·ft²·°F) × 1.442278889
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 Milliwatt per centimetre kelvin
The milliwatt per centimetre kelvin (mW/(cm·K)) equals exactly 0.1 W/(m·K). Used in semiconductor and thermoelectric materials research: bismuth telluride ≈15 mW/(cm·K), yttria-stabilised zirconia ≈2 mW/(cm·K). Bridges the scale gap between mW/(m·K) for insulators and W/(m·K) for bulk solids. 1 mW/(cm·K) = 0.1 W/(m·K) = 100 mW/(m·K).
Quick Reference Table
| BTU inch per hour per square foot per degree Fahrenheit (BTU·in/(h·ft²·°F)) | Milliwatt per centimetre kelvin (mW/(cm·K)) |
|---|---|
| 1 BTU·in/(h·ft²·°F) | 1.44228 mW/(cm·K) |
| 2 BTU·in/(h·ft²·°F) | 2.88456 mW/(cm·K) |
| 5 BTU·in/(h·ft²·°F) | 7.21139 mW/(cm·K) |
| 10 BTU·in/(h·ft²·°F) | 14.4228 mW/(cm·K) |
| 25 BTU·in/(h·ft²·°F) | 36.057 mW/(cm·K) |
| 50 BTU·in/(h·ft²·°F) | 72.1139 mW/(cm·K) |
| 100 BTU·in/(h·ft²·°F) | 144.228 mW/(cm·K) |