Convert Celsius Heat Unit per hour per square foot to Milliwatt per square metre
Convert Celsius Heat Unit per hour per square foot (CHU/(h·ft²)) to Milliwatt per square metre (mW/m²) instantly and accurately.
Conversion Formula
mW/m² = CHU/(h·ft²) × 5678.263341
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).
About Milliwatt per square metre
The milliwatt per square metre (mW/m²) equals 10⁻³ W/m². Relevant in geothermal surveys: global average continental heat flux ≈ 65 mW/m², oceanic ≈ 101 mW/m². Used in building physics for quantifying very small heat leakage through ultra-high-performance insulation. 1 mW/m² = 10⁻³ W/m² = 1 erg/(s·cm²).
Quick Reference Table
| Celsius Heat Unit per hour per square foot (CHU/(h·ft²)) | Milliwatt per square metre (mW/m²) |
|---|---|
| 1 CHU/(h·ft²) | 5678.26 mW/m² |
| 2 CHU/(h·ft²) | 11356.5 mW/m² |
| 5 CHU/(h·ft²) | 28391.3 mW/m² |
| 10 CHU/(h·ft²) | 56782.6 mW/m² |
| 25 CHU/(h·ft²) | 141957 mW/m² |
| 50 CHU/(h·ft²) | 283913 mW/m² |
| 100 CHU/(h·ft²) | 567826 mW/m² |