Convert watt per meter kelvin to btu (it) foot per hour square foot fahrenheit instantly. Type in either field — results update live.
Selected W/(m·K) values converted to BTU (IT)·ft/(h·ft²·°F) using the exact factor from this tool.
| W/(m·K) | BTU (IT)·ft/(h·ft²·°F) |
|---|---|
| 0.01 | 0.0057778932 |
| 0.1 | 0.0577789317 |
| 1 | 0.5777893167 |
| 2 | 1.1555786333 |
| 3 | 1.73336795 |
| 5 | 2.8889465833 |
| 10 | 5.7778931667 |
| 20 | 11.5557863333 |
| 50 | 28.8894658333 |
| 100 | 57.7789316667 |
| 1,000 | 577.789316667 |
Exact conversion factors in both directions, plus a worked example.
1 W/(m·K) = 0.5777893167 BTU (IT)·ft/(h·ft²·°F)
1 BTU (IT)·ft/(h·ft²·°F) = 1.730734666 W/(m·K)
To convert watt per meter kelvin to btu (it) foot per hour square foot fahrenheit, multiply by 0.5777893167.
To convert btu (it) foot per hour square foot fahrenheit to watt per meter kelvin, multiply by 1.730734666.
Example: convert 10 W/(m·K) to BTU (IT)·ft/(h·ft²·°F)
10 × 0.5777893167 = 5.7778931667 BTU (IT)·ft/(h·ft²·°F)
Short background on the units used in this conversion.
The watt per meter kelvin (W/(m·K)) is the SI unit of thermal conductivity — heat flow per unit area per unit temperature gradient.
Watts per meter kelvin specify insulation, metals, ceramics, and fluids in building science and heat-exchanger design.
BTU (IT) foot per hour square foot Fahrenheit is an imperial thermal conductivity unit equal to about 1.731 W/(m·K).
This BTU-based conductivity unit appears in US insulation R-value derivations and legacy HVAC engineering tables.
BTU (IT)·ft/(h·ft²·°F) = W/(m·K) × 0.5777893167W/(m·K) = BTU (IT)·ft/(h·ft²·°F) × 1.730734666, using the same exact factors as this converter.Jump to any thermal conductivity conversion starting from watt per meter kelvin — including the reverse direction and every other unit in our dataset.