Convert Milliwatt per square metre to Celsius Heat Unit per hour per square foot
Convert Milliwatt per square metre (mW/m²) to Celsius Heat Unit per hour per square foot (CHU/(h·ft²)) instantly and accurately.
Conversion Formula
CHU/(h·ft²) = mW/m² × 0.0001761101837
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).
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
| Milliwatt per square metre (mW/m²) | Celsius Heat Unit per hour per square foot (CHU/(h·ft²)) |
|---|---|
| 1 mW/m² | 0.00017611 CHU/(h·ft²) |
| 2 mW/m² | 0.00035222 CHU/(h·ft²) |
| 5 mW/m² | 0.000880551 CHU/(h·ft²) |
| 10 mW/m² | 0.0017611 CHU/(h·ft²) |
| 25 mW/m² | 0.00440275 CHU/(h·ft²) |
| 50 mW/m² | 0.00880551 CHU/(h·ft²) |
| 100 mW/m² | 0.017611 CHU/(h·ft²) |