Convert International table calorie per second per square centimetre to International table BTU per hour per square foot
Convert International table calorie per second per square centimetre (cal(IT)/(s·cm²)) to International table BTU per hour per square foot (BTU(IT)/(h·ft²)) instantly and accurately.
Conversion Formula
BTU(IT)/(h·ft²) = cal(IT)/(s·cm²) × 13272.08611
About International table calorie per second per square centimetre
The international table calorie per second per square centimetre (cal(IT)/(s·cm²)) equals exactly 41868 W/m² (1 cal(IT) = 4.1868 J; 1 cm² = 10⁻⁴ m²). The IT variant of the high-flux CGS unit, slightly larger than the thermochemical counterpart due to the IT calorie definition. 1 cal(IT)/(s·cm²) = 41868 W/m².
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.
Quick Reference Table
| International table calorie per second per square centimetre (cal(IT)/(s·cm²)) | International table BTU per hour per square foot (BTU(IT)/(h·ft²)) |
|---|---|
| 1 cal(IT)/(s·cm²) | 13272.1 BTU(IT)/(h·ft²) |
| 2 cal(IT)/(s·cm²) | 26544.2 BTU(IT)/(h·ft²) |
| 5 cal(IT)/(s·cm²) | 66360.4 BTU(IT)/(h·ft²) |
| 10 cal(IT)/(s·cm²) | 132721 BTU(IT)/(h·ft²) |
| 25 cal(IT)/(s·cm²) | 331802 BTU(IT)/(h·ft²) |
| 50 cal(IT)/(s·cm²) | 663604 BTU(IT)/(h·ft²) |
| 100 cal(IT)/(s·cm²) | 1327210 BTU(IT)/(h·ft²) |