Convert watt/square meter to watt/square inch

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Vice Versa: watt/square inch to watt/square meter

Watt/Square Meter

The watt per square metre (W/m²) is the SI unit of heat flux density and irradiance. It represents the power transmitted per unit area. The solar constant (total solar irradiance) at Earth's orbit is approximately 1361 W/m². Used in heat transfer engineering, solar energy, and thermal radiation analysis. 


Watt/Square Inch

The watt per square inch (W/in²) equals approximately 1550 W/m² and is an imperial unit of heat flux used in US electronics packaging, printed circuit board thermal analysis, and component cooling design where inch-based dimensions are common. 


Watt/Square Meter to Watt/Square Inch conversion table
Watt/Square MeterWatt/Square Inch
10.0006452
20.00129032
50.0032258
100.0064516
250.016129
500.032258
1000.064516
5000.32258
10000.64516

Most common heat flux density unit conversions
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