Convert watt/square metre/k to btu (it)/hour/sq. foot/°f
Watt/Square Metre/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)/Hour/Sq. Foot/°F
The British thermal unit per hour per square foot per degree Fahrenheit (Btu/(h·ft²·°F)) equals approximately 5.678 W/(m²·K). It is the standard imperial unit for heat transfer coefficient (U-value) in North American HVAC, building codes, and heat exchanger design and is related to the R-value of insulation.
Watt/Square Metre/K to Btu (IT)/Hour/Sq. Foot/°F conversion table
| Watt/Square Metre/K | Btu (IT)/Hour/Sq. Foot/°F | Btu (IT)/Hour/Sq. Foot/°F | Watt/Square Metre/K |
|---|---|---|---|
| 1 | 0.17611 | 1 | 5.67826 |
| 2 | 0.35222 | 2 | 11.3565 |
| 3 | 0.528331 | 3 | 17.0348 |
| 5 | 0.880551 | 5 | 28.3913 |
| 10 | 1.7611 | 10 | 56.7826 |
| 20 | 3.5222 | 20 | 113.565 |
| 25 | 4.40275 | 25 | 141.957 |
| 50 | 8.80551 | 50 | 283.913 |
| 100 | 17.611 | 100 | 567.826 |
| 250 | 44.0275 | 250 | 1419.57 |
| 500 | 88.0551 | 500 | 2839.13 |
| 1000 | 176.11 | 1000 | 5678.26 |
How to convert Watt/Square Metre/K to Btu (IT)/Hour/Sq. Foot/°F
1 W/(m²·K) = 0.17611 Btu/(h·ft²·°F). To convert any value, multiply it by 0.17611. For example, 25 W/(m²·K) = 4.40275 Btu/(h·ft²·°F).
Frequently asked questions
- How many Btu/(h·ft²·°F) are there in one W/(m²·K)?
- One W/(m²·K) is equal to 0.17611 Btu/(h·ft²·°F).
- How do you convert Watt/Square Metre/K to Btu (IT)/Hour/Sq. Foot/°F?
- Multiply the value in Watt/Square Metre/K by 0.17611 to get the result in Btu (IT)/Hour/Sq. Foot/°F.
- How much is 25 W/(m²·K) in Btu/(h·ft²·°F)?
- 25 W/(m²·K) is equal to 4.40275 Btu/(h·ft²·°F).
- How do you convert Btu (IT)/Hour/Sq. Foot/°F back to Watt/Square Metre/K?
- Divide by the same factor: multiply the value in Btu (IT)/Hour/Sq. Foot/°F by 5.67826 to get Watt/Square Metre/K.