Convert btu (it)/hour/sq. foot/°f to watt/square metre/k
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
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 to Watt/Square Metre/K conversion table
| Btu (IT)/Hour/Sq. Foot/°F | Watt/Square Metre/K | Watt/Square Metre/K | Btu (IT)/Hour/Sq. Foot/°F |
|---|---|---|---|
| 1 | 5.67826 | 1 | 0.17611 |
| 2 | 11.3565 | 2 | 0.35222 |
| 3 | 17.0348 | 3 | 0.528331 |
| 5 | 28.3913 | 5 | 0.880551 |
| 10 | 56.7826 | 10 | 1.7611 |
| 20 | 113.565 | 20 | 3.5222 |
| 25 | 141.957 | 25 | 4.40275 |
| 50 | 283.913 | 50 | 8.80551 |
| 100 | 567.826 | 100 | 17.611 |
| 250 | 1419.57 | 250 | 44.0275 |
| 500 | 2839.13 | 500 | 88.0551 |
| 1000 | 5678.26 | 1000 | 176.11 |
How to convert Btu (IT)/Hour/Sq. Foot/°F to Watt/Square Metre/K
1 Btu/(h·ft²·°F) = 5.67826 W/(m²·K). To convert any value, multiply it by 5.67826. For example, 25 Btu/(h·ft²·°F) = 141.957 W/(m²·K).
Frequently asked questions
- How many W/(m²·K) are there in one Btu/(h·ft²·°F)?
- One Btu/(h·ft²·°F) is equal to 5.67826 W/(m²·K).
- How do you convert Btu (IT)/Hour/Sq. Foot/°F to Watt/Square Metre/K?
- Multiply the value in Btu (IT)/Hour/Sq. Foot/°F by 5.67826 to get the result in Watt/Square Metre/K.
- How much is 25 Btu/(h·ft²·°F) in W/(m²·K)?
- 25 Btu/(h·ft²·°F) is equal to 141.957 W/(m²·K).
- How do you convert Watt/Square Metre/K back to Btu (IT)/Hour/Sq. Foot/°F?
- Divide by the same factor: multiply the value in Watt/Square Metre/K by 0.17611 to get Btu (IT)/Hour/Sq. Foot/°F.