Convert watt/square meter to btu (it)/second/square foot
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.
Btu (IT)/Second/Square Foot
The British thermal unit (IT) per second per square foot (Btu/(s·ft²)) equals approximately 11,356 W/m². It is an imperial unit used for high-intensity heat fluxes such as those encountered in rocket nozzles, re-entry vehicles, and high-power industrial burners in North American engineering.
Watt/Square Meter to Btu (IT)/Second/Square Foot conversion table
| Watt/Square Meter | Btu (IT)/Second/Square Foot |
|---|---|
| 1 | 8.806E-05 |
| 2 | 0.0001761 |
| 5 | 0.0004403 |
| 10 | 0.0008806 |
| 25 | 0.00220138 |
| 50 | 0.00440275 |
| 100 | 0.00880551 |
| 500 | 0.0440275 |
| 1000 | 0.0880551 |