Convert International table BTU per second per square foot to International table kilocalorie per hour per square metre
Convert International table BTU per second per square foot (BTU(IT)/(s·ft²)) to International table kilocalorie per hour per square metre (kcal(IT)/(h·m²)) instantly and accurately.
Conversion Formula
kcal(IT)/(h·m²) = BTU(IT)/(s·ft²) × 9764.855273
About International table BTU per second per square foot
The international table BTU per second per square foot (BTU(IT)/(s·ft²)) equals 1055.05585262/0.09290304 ≈ 11357 W/m² (= 3600 × BTU(IT)/(h·ft²)). Used for extreme heat flux: atmospheric re-entry aerodynamic heating, solid rocket nozzle throat, and nuclear reactor thermal hydraulics design. 1 BTU(IT)/(s·ft²) ≈ 11357 W/m².
About International table kilocalorie per hour per square metre
The international table kilocalorie per hour per square metre (kcal(IT)/(h·m²)) equals 4186.8/3600 ≈ 1.1633 W/m² (1 kcal(IT) = 4186.8 J; 1 h = 3600 s). The IT variant used in steam engineering, solar thermal collector standards, and process heat calculations. 1 kcal(IT)/(h·m²) ≈ 1.1633 W/m².
Quick Reference Table
| International table BTU per second per square foot (BTU(IT)/(s·ft²)) | International table kilocalorie per hour per square metre (kcal(IT)/(h·m²)) |
|---|---|
| 1 BTU(IT)/(s·ft²) | 9764.86 kcal(IT)/(h·m²) |
| 2 BTU(IT)/(s·ft²) | 19529.7 kcal(IT)/(h·m²) |
| 5 BTU(IT)/(s·ft²) | 48824.3 kcal(IT)/(h·m²) |
| 10 BTU(IT)/(s·ft²) | 97648.6 kcal(IT)/(h·m²) |
| 25 BTU(IT)/(s·ft²) | 244121 kcal(IT)/(h·m²) |
| 50 BTU(IT)/(s·ft²) | 488243 kcal(IT)/(h·m²) |
| 100 BTU(IT)/(s·ft²) | 976486 kcal(IT)/(h·m²) |