Convert btu (it) foot per hour square foot fahrenheit to watt per meter kelvin instantly. Type in either field — results update live.
Selected BTU (IT)·ft/(h·ft²·°F) values converted to W/(m·K) using the exact factor from this tool.
| BTU (IT)·ft/(h·ft²·°F) | W/(m·K) |
|---|---|
| 0.01 | 0.0173073467 |
| 0.1 | 0.1730734666 |
| 1 | 1.730734666 |
| 2 | 3.461469332 |
| 3 | 5.192203998 |
| 5 | 8.65367333 |
| 10 | 17.30734666 |
| 20 | 34.61469332 |
| 50 | 86.5367333 |
| 100 | 173.0734666 |
| 1,000 | 1,730.734666 |
Exact conversion factors in both directions, plus a worked example.
1 BTU (IT)·ft/(h·ft²·°F) = 1.730734666 W/(m·K)
1 W/(m·K) = 0.5777893167 BTU (IT)·ft/(h·ft²·°F)
To convert btu (it) foot per hour square foot fahrenheit to watt per meter kelvin, multiply by 1.730734666.
To convert watt per meter kelvin to btu (it) foot per hour square foot fahrenheit, multiply by 0.5777893167.
Example: convert 10 BTU (IT)·ft/(h·ft²·°F) to W/(m·K)
10 × 1.730734666 = 17.30734666 W/(m·K)
Short background on the units used in this conversion.
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.
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.
W/(m·K) = BTU (IT)·ft/(h·ft²·°F) × 1.730734666BTU (IT)·ft/(h·ft²·°F) = W/(m·K) × 0.5777893167, using the same exact factors as this converter.Jump to any thermal conductivity conversion starting from btu (it) foot per hour square foot fahrenheit — including the reverse direction and every other unit in our dataset.