Convert Kilocalorie per metre per hour per degree Celsius to BTU inch per hour per square foot per degree Fahrenheit
Convert Kilocalorie per metre per hour per degree Celsius (kcal/(m·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/(m·h·°C) × 8.063627702
About Kilocalorie per metre per hour per degree Celsius
The kcal/(m·h·°C) equals exactly 4186.8/3600 W/(m·K) = 1.163 W/(m·K) (1 kcal(IT) = 4186.8 J). Used in pre-SI continental European engineering literature, older DIN/BS standards, and Soviet-era technical documentation. Brick: ≈0.6; dense concrete: ≈1.3; carbon steel: ≈38 kcal/(m·h·°C). 1 kcal/(m·h·°C) = 1.163 W/(m·K).
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 metre per hour per degree Celsius (kcal/(m·h·°C)) | BTU inch per hour per square foot per degree Fahrenheit (BTU·in/(h·ft²·°F)) |
|---|---|
| 1 kcal/(m·h·°C) | 8.06363 BTU·in/(h·ft²·°F) |
| 2 kcal/(m·h·°C) | 16.1273 BTU·in/(h·ft²·°F) |
| 5 kcal/(m·h·°C) | 40.3181 BTU·in/(h·ft²·°F) |
| 10 kcal/(m·h·°C) | 80.6363 BTU·in/(h·ft²·°F) |
| 25 kcal/(m·h·°C) | 201.591 BTU·in/(h·ft²·°F) |
| 50 kcal/(m·h·°C) | 403.181 BTU·in/(h·ft²·°F) |
| 100 kcal/(m·h·°C) | 806.363 BTU·in/(h·ft²·°F) |