Convert BTU inch per hour per square foot per degree Fahrenheit to Kilocalorie per centimetre per hour per degree Celsius
Convert BTU inch per hour per square foot per degree Fahrenheit (BTU·in/(h·ft²·°F)) to Kilocalorie per centimetre per hour per degree Celsius (kcal/(cm·h·°C)) instantly and accurately.
Conversion Formula
kcal/(cm·h·°C) = BTU·in/(h·ft²·°F) × 0.00124013662
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 Kilocalorie per centimetre per hour per degree Celsius
The kcal/(cm·h·°C) equals exactly 4186.8/36 W/(m·K) = 116.3 W/(m·K) (1 kcal(IT) = 4186.8 J; 1 h = 3600 s; 1 cm = 0.01 m). Used in older CGS-metric European and Soviet literature for metallic heat transfer. Steel: ≈0.137; copper: ≈3.31 kcal/(cm·h·°C). 1 kcal/(cm·h·°C) = 116.3 W/(m·K) = 100 × kcal/(m·h·°C).
Quick Reference Table
| BTU inch per hour per square foot per degree Fahrenheit (BTU·in/(h·ft²·°F)) | Kilocalorie per centimetre per hour per degree Celsius (kcal/(cm·h·°C)) |
|---|---|
| 1 BTU·in/(h·ft²·°F) | 0.00124014 kcal/(cm·h·°C) |
| 2 BTU·in/(h·ft²·°F) | 0.00248027 kcal/(cm·h·°C) |
| 5 BTU·in/(h·ft²·°F) | 0.00620068 kcal/(cm·h·°C) |
| 10 BTU·in/(h·ft²·°F) | 0.0124014 kcal/(cm·h·°C) |
| 25 BTU·in/(h·ft²·°F) | 0.0310034 kcal/(cm·h·°C) |
| 50 BTU·in/(h·ft²·°F) | 0.0620068 kcal/(cm·h·°C) |
| 100 BTU·in/(h·ft²·°F) | 0.124014 kcal/(cm·h·°C) |