Convert watt/square meter to horsepower/square foot

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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. 


Horsepower/Square Foot

The horsepower per square foot (hp/ft²) is an imperial unit of heat flux equal to approximately 8026 W/m². It is occasionally used in mechanical engineering and power density comparisons for engines and motors where horsepower is the conventional power unit in North American contexts. 


Watt/Square Meter to Horsepower/Square Foot conversion table
Watt/Square MeterHorsepower/Square FootHorsepower/Square FootWatt/Square Meter
10.000124618026.65
20.0002492216053.3
30.0003738324079.9
50.0006229540133.2
100.001245851080266.5
200.002491720160533
250.0031146325200666
500.0062292550401332
1000.0124585100802665
2500.03114632502.00666E+06
5000.06229255004.01332E+06
10000.12458510008.02665E+06
How to convert Watt/Square Meter to Horsepower/Square Foot

1 W/m² = 0.0001246 hp/ft². To convert any value, multiply it by 0.0001246. For example, 25 W/m² = 0.00311463 hp/ft².

Frequently asked questions
How many hp/ft² are there in one W/m²?
One W/m² is equal to 0.0001246 hp/ft².
How do you convert Watt/Square Meter to Horsepower/Square Foot?
Multiply the value in Watt/Square Meter by 0.0001246 to get the result in Horsepower/Square Foot.
How much is 25 W/m² in hp/ft²?
25 W/m² is equal to 0.00311463 hp/ft².
How do you convert Horsepower/Square Foot back to Watt/Square Meter?
Divide by the same factor: multiply the value in Horsepower/Square Foot by 8026.65 to get Watt/Square Meter.

Most common heat flux density unit conversions