Convert btu (it)/second/square foot to watt/square metre
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 Metre
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 to Watt/Square Metre conversion table
| Btu (IT)/Second/Square Foot | Watt/Square Metre | Watt/Square Metre | Btu (IT)/Second/Square Foot |
|---|---|---|---|
| 1 | 11356.5 | 1 | 8.806E-05 |
| 2 | 22713.1 | 2 | 0.0001761 |
| 3 | 34069.6 | 3 | 0.0002642 |
| 5 | 56782.6 | 5 | 0.0004403 |
| 10 | 113565 | 10 | 0.0008806 |
| 20 | 227131 | 20 | 0.0017611 |
| 25 | 283913 | 25 | 0.00220138 |
| 50 | 567826 | 50 | 0.00440275 |
| 100 | 1.13565E+06 | 100 | 0.00880551 |
| 250 | 2.83913E+06 | 250 | 0.0220138 |
| 500 | 5.67826E+06 | 500 | 0.0440275 |
| 1000 | 1.13565E+07 | 1000 | 0.0880551 |
How to convert Btu (IT)/Second/Square Foot to Watt/Square Metre
1 Btu/(s·ft²) = 11356.5 W/m². To convert any value, multiply it by 11356.5. For example, 25 Btu/(s·ft²) = 283913 W/m².
Frequently asked questions
- How many W/m² are there in one Btu/(s·ft²)?
- One Btu/(s·ft²) is equal to 11356.5 W/m².
- How do you convert Btu (IT)/Second/Square Foot to Watt/Square Metre?
- Multiply the value in Btu (IT)/Second/Square Foot by 11356.5 to get the result in Watt/Square Metre.
- How much is 25 Btu/(s·ft²) in W/m²?
- 25 Btu/(s·ft²) is equal to 283913 W/m².
- How do you convert Watt/Square Metre back to Btu (IT)/Second/Square Foot?
- Divide by the same factor: multiply the value in Watt/Square Metre by 8.806E-05 to get Btu (IT)/Second/Square Foot.