Convert International table BTU per hour per square inch to Thermochemical kilocalorie per hour per square metre
Convert International table BTU per hour per square inch (BTU(IT)/(h·in²)) to Thermochemical kilocalorie per hour per square metre (kcal(th)/(h·m²)) instantly and accurately.
Conversion Formula
kcal(th)/(h·m²) = BTU(IT)/(h·in²) × 390.8556028
About International table BTU per hour per square inch
The international table BTU per hour per square inch (BTU(IT)/(h·in²)) equals 1055.05585262/(3600×6.4516×10⁻⁴) ≈ 454.26 W/m². Used for high heat flux applications such as electronic component cooling, jet engine combustor walls, and nuclear fuel assembly design in US customary units. 1 BTU(IT)/(h·in²) ≈ 454.26 W/m².
About Thermochemical kilocalorie per hour per square metre
The thermochemical kilocalorie per hour per square metre (kcal(th)/(h·m²)) equals 4184/3600 ≈ 1.1622 W/m² (1 kcal(th) = 4184 J; 1 h = 3600 s). Used in older continental European and Soviet-era building physics standards for wall and roof heat loss calculations. 1 kcal(th)/(h·m²) ≈ 1.1622 W/m².
Quick Reference Table
| International table BTU per hour per square inch (BTU(IT)/(h·in²)) | Thermochemical kilocalorie per hour per square metre (kcal(th)/(h·m²)) |
|---|---|
| 1 BTU(IT)/(h·in²) | 390.856 kcal(th)/(h·m²) |
| 2 BTU(IT)/(h·in²) | 781.711 kcal(th)/(h·m²) |
| 5 BTU(IT)/(h·in²) | 1954.28 kcal(th)/(h·m²) |
| 10 BTU(IT)/(h·in²) | 3908.56 kcal(th)/(h·m²) |
| 25 BTU(IT)/(h·in²) | 9771.39 kcal(th)/(h·m²) |
| 50 BTU(IT)/(h·in²) | 19542.8 kcal(th)/(h·m²) |
| 100 BTU(IT)/(h·in²) | 39085.6 kcal(th)/(h·m²) |