Convert Watt per square inch to Celsius Heat Unit per hour per square foot
Convert Watt per square inch (W/in²) to Celsius Heat Unit per hour per square foot (CHU/(h·ft²)) instantly and accurately.
Conversion Formula
CHU/(h·ft²) = W/in² × 272.9713307
About Watt per square inch
The watt per square inch (W/in²) equals 1/(6.4516×10⁻⁴) ≈ 1550.003 W/m² (1 in = 0.0254 m). Used in US electronics thermal management for PCB power density, semiconductor die heat flux, and power module ratings. 1 W/in² ≈ 1550 W/m² ≈ 0.155 W/cm².
About Celsius Heat Unit per hour per square foot
The Celsius heat unit per hour per square foot (CHU/(h·ft²)) equals (9/5)×1055.05585262/(3600×0.09290304) ≈ 5.6783 W/m². The CHU (= 9/5 BTU(IT)) uses a 1 °C temperature interval instead of 1 °F; historically used in UK and Canadian heating engineering. 1 CHU/(h·ft²) ≈ 5.6783 W/m² = (9/5) × BTU(IT)/(h·ft²).
Quick Reference Table
| Watt per square inch (W/in²) | Celsius Heat Unit per hour per square foot (CHU/(h·ft²)) |
|---|---|
| 1 W/in² | 272.971 CHU/(h·ft²) |
| 2 W/in² | 545.943 CHU/(h·ft²) |
| 5 W/in² | 1364.86 CHU/(h·ft²) |
| 10 W/in² | 2729.71 CHU/(h·ft²) |
| 25 W/in² | 6824.28 CHU/(h·ft²) |
| 50 W/in² | 13648.6 CHU/(h·ft²) |
| 100 W/in² | 27297.1 CHU/(h·ft²) |