Convert watt/square meter/k to btu (it)/hour/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)/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 Meter/K to Btu (IT)/Hour/Sq. Foot/°F conversion table
| Watt/Square Meter/K | Btu (IT)/Hour/Sq. Foot/°F |
|---|---|
| 1 | 0.17611 |
| 2 | 0.35222 |
| 5 | 0.880551 |
| 10 | 1.7611 |
| 25 | 4.40275 |
| 50 | 8.80551 |
| 100 | 17.611 |
| 500 | 88.0551 |
| 1000 | 176.11 |