Convert Celsius Heat Unit per hour per square foot to Watt per square inch

Convert Celsius Heat Unit per hour per square foot (CHU/(h·ft²)) to Watt per square inch (W/in²) instantly and accurately.

Celsius Heat Unit per hour per square foot (CHU/(h·ft²))
Watt per square inch (W/in²)

Conversion Formula

W/in² = CHU/(h·ft²) × 0.003663388377

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 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.

Quick Reference Table

Celsius Heat Unit per hour per square foot (CHU/(h·ft²))Watt per square inch (W/in²)
1 CHU/(h·ft²)0.00366339 W/in²
2 CHU/(h·ft²)0.00732678 W/in²
5 CHU/(h·ft²)0.0183169 W/in²
10 CHU/(h·ft²)0.0366339 W/in²
25 CHU/(h·ft²)0.0915847 W/in²
50 CHU/(h·ft²)0.183169 W/in²
100 CHU/(h·ft²)0.366339 W/in²

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