Convert BTU per Hour Square Foot °F to Watts per Square Meter Kelvin
1 btu per hour square foot °f = 5.6782633 watts per square meter kelvin. Multiply the number of btu per hour square foot °f by 5.67826334111.
1 BTU/(h·ft²·°F) = 5.678263341 W/(m²·K)
Multiply the number of btu per hour square foot °f by 5.67826334111.
Results are rounded for display. Double-check values for critical work.
Popular heat transfer coefficient (u-value) conversions
BTU per Hour Square Foot °F to Watts per Square Meter Kelvin table
| BTU per Hour Square Foot °F | Watts per Square Meter Kelvin |
|---|---|
| 1 BTU/(h·ft²·°F) | 5.6782633 W/(m²·K) |
| 2 BTU/(h·ft²·°F) | 11.356527 W/(m²·K) |
| 3 BTU/(h·ft²·°F) | 17.03479 W/(m²·K) |
| 4 BTU/(h·ft²·°F) | 22.713053 W/(m²·K) |
| 5 BTU/(h·ft²·°F) | 28.391317 W/(m²·K) |
| 10 BTU/(h·ft²·°F) | 56.782633 W/(m²·K) |
| 20 BTU/(h·ft²·°F) | 113.56527 W/(m²·K) |
| 25 BTU/(h·ft²·°F) | 141.95658 W/(m²·K) |
| 50 BTU/(h·ft²·°F) | 283.91317 W/(m²·K) |
| 100 BTU/(h·ft²·°F) | 567.82633 W/(m²·K) |
| 500 BTU/(h·ft²·°F) | 2,839.1317 W/(m²·K) |
| 1000 BTU/(h·ft²·°F) | 5,678.2633 W/(m²·K) |
BTU per Hour Square Foot °F to Watts per Square Meter Kelvin in your head
Multiply by 17, then divide by 3.
That lands within 0.2% of the exact value.
10 BTU/(h·ft²·°F) → 56.6667 W/(m²·K) in your head, 56.7826 W/(m²·K) exactly.
About these units
The btu per hour square foot °f (BTU/(h·ft²·°F)) is an imperial unit of heat transfer coefficient, equal to 5.6782633 watts per square meter kelvin.
The watt per square meter kelvin (W/(m²·K)) is an SI base or derived unit of heat transfer coefficient.
Going the other way, 1 watt per square meter kelvin = 0.17611018 btu per hour square foot °f. The U-value of a window, wall or heat exchanger is the heat flow per unit area per degree of temperature difference. Building codes in Europe quote W/(m²·K), while US codes use BTU/(h·ft²·°F). One US unit is about 5.678 metric units.
Frequently asked
- How many watts per square meter kelvin are in a btu per hour square foot °f?
- 1 btu per hour square foot °f = 5.6782633 watts per square meter kelvin.
- How do you convert btu per hour square foot °f to watts per square meter kelvin?
- Multiply the number of btu per hour square foot °f by 5.67826334111.
- What is 10 BTU/(h·ft²·°F) in W/(m²·K)?
- 10 BTU/(h·ft²·°F) = 56.782633 W/(m²·K).