Convert Kilocalorie per centimetre per hour per degree Celsius to BTU inch per hour per square foot per degree Fahrenheit
Convert Kilocalorie per centimetre per hour per degree Celsius (kcal/(cm·h·°C)) to BTU inch per hour per square foot per degree Fahrenheit (BTU·in/(h·ft²·°F)) instantly and accurately.
Conversion Formula
BTU·in/(h·ft²·°F) = kcal/(cm·h·°C) × 806.3627702
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).
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).
Quick Reference Table
| Kilocalorie per centimetre per hour per degree Celsius (kcal/(cm·h·°C)) | BTU inch per hour per square foot per degree Fahrenheit (BTU·in/(h·ft²·°F)) |
|---|---|
| 1 kcal/(cm·h·°C) | 806.363 BTU·in/(h·ft²·°F) |
| 2 kcal/(cm·h·°C) | 1612.73 BTU·in/(h·ft²·°F) |
| 5 kcal/(cm·h·°C) | 4031.81 BTU·in/(h·ft²·°F) |
| 10 kcal/(cm·h·°C) | 8063.63 BTU·in/(h·ft²·°F) |
| 25 kcal/(cm·h·°C) | 20159.1 BTU·in/(h·ft²·°F) |
| 50 kcal/(cm·h·°C) | 40318.1 BTU·in/(h·ft²·°F) |
| 100 kcal/(cm·h·°C) | 80636.3 BTU·in/(h·ft²·°F) |