BTU-inch per hour-ft²-°F to watts per meter-kelvin
Type a value in BTU·in/(h·ft²·°F) to get it in W/(m·K) instantly.
That's 4.8× as conductive as rigid foam, while wood is 1.04× higher. Through a 10 cm slab with 20 °C across it, that carries about 28.85 W per square meter.
Convert the other way: W/(m·K) to BTU·in/(h·ft²·°F)
What it means
How fast does heat cross?
Values are at room temperature. Conductivity changes with temperature, moisture and, for insulation, with age.
The math
How to convert BTU·in/(h·ft²·°F) to W/(m·K)
To convert BTU-inch per hour-ft²-°F to watts per meter-kelvin, multiply by 0.144228.
Example: 1 BTU·in/(h·ft²·°F) × 0.144228 = 0.144228 W/(m·K).
In the other direction, 1 W/(m·K) = 6.93347 BTU·in/(h·ft²·°F).
Every unit
Your conductivity in every unit
Tables
BTU·in/(h·ft²·°F) to W/(m·K) conversion table
| BTU·in/(h·ft²·°F) | W/(m·K) |
|---|---|
| 0.02 BTU·in/(h·ft²·°F) | 0.00288456 W/(m·K) |
| 0.05 BTU·in/(h·ft²·°F) | 0.00721139 W/(m·K) |
| 0.1 BTU·in/(h·ft²·°F) | 0.0144228 W/(m·K) |
| 0.2 BTU·in/(h·ft²·°F) | 0.0288456 W/(m·K) |
| 0.5 BTU·in/(h·ft²·°F) | 0.0721139 W/(m·K) |
| 1 BTU·in/(h·ft²·°F) | 0.144228 W/(m·K) |
| 2 BTU·in/(h·ft²·°F) | 0.288456 W/(m·K) |
| 5 BTU·in/(h·ft²·°F) | 0.721139 W/(m·K) |
| 10 BTU·in/(h·ft²·°F) | 1.44228 W/(m·K) |
| 50 BTU·in/(h·ft²·°F) | 7.21139 W/(m·K) |
| 100 BTU·in/(h·ft²·°F) | 14.4228 W/(m·K) |
| 200 BTU·in/(h·ft²·°F) | 28.8456 W/(m·K) |
| 400 BTU·in/(h·ft²·°F) | 57.6912 W/(m·K) |
W/(m·K) to BTU·in/(h·ft²·°F) conversion table
| W/(m·K) | BTU·in/(h·ft²·°F) |
|---|---|
| 0.02 W/(m·K) | 0.138669 BTU·in/(h·ft²·°F) |
| 0.05 W/(m·K) | 0.346674 BTU·in/(h·ft²·°F) |
| 0.1 W/(m·K) | 0.693347 BTU·in/(h·ft²·°F) |
| 0.2 W/(m·K) | 1.38669 BTU·in/(h·ft²·°F) |
| 0.5 W/(m·K) | 3.46674 BTU·in/(h·ft²·°F) |
| 1 W/(m·K) | 6.93347 BTU·in/(h·ft²·°F) |
| 2 W/(m·K) | 13.8669 BTU·in/(h·ft²·°F) |
| 5 W/(m·K) | 34.6674 BTU·in/(h·ft²·°F) |
| 10 W/(m·K) | 69.3347 BTU·in/(h·ft²·°F) |
| 50 W/(m·K) | 346.674 BTU·in/(h·ft²·°F) |
| 100 W/(m·K) | 693.347 BTU·in/(h·ft²·°F) |
| 200 W/(m·K) | 1,386.69 BTU·in/(h·ft²·°F) |
| 400 W/(m·K) | 2,773.39 BTU·in/(h·ft²·°F) |
Quick answers
Quick answers
- How many W/(m·K) is 1 BTU·in/(h·ft²·°F)?
- 1 BTU·in/(h·ft²·°F) is 0.144228 W/(m·K).
- How many W/(m·K) is 10 BTU·in/(h·ft²·°F)?
- 10 BTU·in/(h·ft²·°F) is 1.44228 W/(m·K).
The units
About these units
BTU-inch per hour-ft²-°F (BTU·in/(h·ft²·°F))
The US building form, quoted per inch of thickness: 0.144 W/m·K.
Watts per meter-kelvin (W/(m·K))
The SI unit of thermal conductivity, used everywhere outside US construction.
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