Convert watt/square meter/k to btu (it)/second/sq. foot/°f
Watt/Square Meter/K
The watt per square metre per kelvin (W/(m²·K)) is the SI unit of heat transfer coefficient, also known as the U-value or film coefficient. It quantifies the rate of heat transfer per unit area per unit temperature difference. Typical values range from 2–25 W/(m²·K) for free convection to over 10,000 W/(m²·K) for boiling.
Btu (IT)/Second/Sq. Foot/°F
The British thermal unit per second per square foot per degree Fahrenheit (Btu/(s·ft²·°F)) equals approximately 20,442 W/(m²·K). This high-rate imperial unit is used for intense heat transfer situations such as condensation, boiling, and rocket nozzle cooling in North American engineering.
Watt/Square Meter/K to Btu (IT)/Second/Sq. Foot/°F conversion table
| Watt/Square Meter/K | Btu (IT)/Second/Sq. Foot/°F | Btu (IT)/Second/Sq. Foot/°F | Watt/Square Meter/K |
|---|---|---|---|
| 1 | 4.892E-05 | 1 | 20441.7 |
| 2 | 9.784E-05 | 2 | 40883.5 |
| 3 | 0.0001468 | 3 | 61325.2 |
| 5 | 0.0002446 | 5 | 102209 |
| 10 | 0.0004892 | 10 | 204417 |
| 20 | 0.0009784 | 20 | 408835 |
| 25 | 0.00122299 | 25 | 511044 |
| 50 | 0.00244597 | 50 | 1.02209E+06 |
| 100 | 0.00489195 | 100 | 2.04417E+06 |
| 250 | 0.0122299 | 250 | 5.11044E+06 |
| 500 | 0.0244597 | 500 | 1.02209E+07 |
| 1000 | 0.0489195 | 1000 | 2.04417E+07 |
How to convert Watt/Square Meter/K to Btu (IT)/Second/Sq. Foot/°F
1 W/(m²·K) = 4.892E-05 Btu/(s·ft²·°F). To convert any value, multiply it by 4.892E-05. For example, 25 W/(m²·K) = 0.00122299 Btu/(s·ft²·°F).
Frequently asked questions
- How many Btu/(s·ft²·°F) are there in one W/(m²·K)?
- One W/(m²·K) is equal to 4.892E-05 Btu/(s·ft²·°F).
- How do you convert Watt/Square Meter/K to Btu (IT)/Second/Sq. Foot/°F?
- Multiply the value in Watt/Square Meter/K by 4.892E-05 to get the result in Btu (IT)/Second/Sq. Foot/°F.
- How much is 25 W/(m²·K) in Btu/(s·ft²·°F)?
- 25 W/(m²·K) is equal to 0.00122299 Btu/(s·ft²·°F).
- How do you convert Btu (IT)/Second/Sq. Foot/°F back to Watt/Square Meter/K?
- Divide by the same factor: multiply the value in Btu (IT)/Second/Sq. Foot/°F by 20441.7 to get Watt/Square Meter/K.