Convert International table BTU per hour per square foot to International table kilocalorie per hour per square metre
Convert International table BTU per hour per square foot (BTU(IT)/(h·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)/(h·ft²) × 2.712459798
About International table BTU per hour per square foot
The international table BTU per hour per square foot (BTU(IT)/(h·ft²)) equals 1055.05585262/(3600×0.09290304) ≈ 3.15459 W/m². The standard US heat flux unit in ASHRAE, ASTM, and building codes for thermal resistance (R-value), boiler ratings, and heat exchanger design. 1 BTU(IT)/(h·ft²) ≈ 3.15459 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 hour per square foot (BTU(IT)/(h·ft²)) | International table kilocalorie per hour per square metre (kcal(IT)/(h·m²)) |
|---|---|
| 1 BTU(IT)/(h·ft²) | 2.71246 kcal(IT)/(h·m²) |
| 2 BTU(IT)/(h·ft²) | 5.42492 kcal(IT)/(h·m²) |
| 5 BTU(IT)/(h·ft²) | 13.5623 kcal(IT)/(h·m²) |
| 10 BTU(IT)/(h·ft²) | 27.1246 kcal(IT)/(h·m²) |
| 25 BTU(IT)/(h·ft²) | 67.8115 kcal(IT)/(h·m²) |
| 50 BTU(IT)/(h·ft²) | 135.623 kcal(IT)/(h·m²) |
| 100 BTU(IT)/(h·ft²) | 271.246 kcal(IT)/(h·m²) |