Convert btu (it) per hour square foot fahrenheit to watt per square meter kelvin instantly. Type in either field — results update live.
Selected BTU (IT)/(h·ft²·°F) values converted to W/(m²·K) using the exact factor from this tool.
| BTU (IT)/(h·ft²·°F) | W/(m²·K) |
|---|---|
| 0.01 | 0.0567826334 |
| 0.1 | 0.5678263341 |
| 1 | 5.678263341 |
| 2 | 11.356526682 |
| 3 | 17.034790023 |
| 5 | 28.391316705 |
| 10 | 56.78263341 |
| 20 | 113.56526682 |
| 50 | 283.91316705 |
| 100 | 567.8263341 |
| 1,000 | 5,678.263341 |
Exact conversion factors in both directions, plus a worked example.
1 BTU (IT)/(h·ft²·°F) = 5.678263341 W/(m²·K)
1 W/(m²·K) = 0.1761101837 BTU (IT)/(h·ft²·°F)
To convert btu (it) per hour square foot fahrenheit to watt per square meter kelvin, multiply by 5.678263341.
To convert watt per square meter kelvin to btu (it) per hour square foot fahrenheit, multiply by 0.1761101837.
Example: convert 10 BTU (IT)/(h·ft²·°F) to W/(m²·K)
10 × 5.678263341 = 56.78263341 W/(m²·K)
Short background on the units used in this conversion.
BTU (IT) per hour square foot Fahrenheit is an imperial heat transfer coefficient equal to about 5.678 W/(m²·K).
This BTU-based convection unit appears in US building codes, coil ratings, and legacy HVAC engineering tables.
The watt per square meter kelvin (W/(m²·K)) is the SI unit of heat transfer coefficient — convective heat flux per unit area per unit temperature difference.
Watts per square meter kelvin rate convection at walls, heat exchangers, and finned surfaces in HVAC and process engineering.
W/(m²·K) = BTU (IT)/(h·ft²·°F) × 5.678263341BTU (IT)/(h·ft²·°F) = W/(m²·K) × 0.1761101837, using the same exact factors as this converter.Jump to any heat transfer coefficient conversion starting from btu (it) per hour square foot fahrenheit — including the reverse direction and every other unit in our dataset.