Convert Watt per square millimetre to Celsius Heat Unit per hour per square foot
Convert Watt per square millimetre (W/mm²) to Celsius Heat Unit per hour per square foot (CHU/(h·ft²)) instantly and accurately.
Conversion Formula
CHU/(h·ft²) = W/mm² × 176110.1837
About Watt per square millimetre
The watt per square millimetre (W/mm²) equals exactly 10⁶ W/m². Used in high-power laser material processing - cutting, welding, and additive manufacturing - and electron beam applications. A 1 kW laser focused to 1 mm² achieves 1 W/mm². Numerically equal to MW/m². 1 W/mm² = 10⁶ W/m² = 100 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 millimetre (W/mm²) | Celsius Heat Unit per hour per square foot (CHU/(h·ft²)) |
|---|---|
| 1 W/mm² | 176110 CHU/(h·ft²) |
| 2 W/mm² | 352220 CHU/(h·ft²) |
| 5 W/mm² | 880551 CHU/(h·ft²) |
| 10 W/mm² | 1761100 CHU/(h·ft²) |
| 25 W/mm² | 4402750 CHU/(h·ft²) |
| 50 W/mm² | 8805510 CHU/(h·ft²) |
| 100 W/mm² | 17611000 CHU/(h·ft²) |