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Heat transfer coefficient converter
How well a surface sheds heat to what is next to it. 4 units, converted from one table of exact factors.
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1 watt/square meter·kelvin in every other heat transfer coefficient unit
Computed by the same engine that runs the converter above, so these can never drift apart from it.
| From | Equals | Unit |
|---|---|---|
| 1 watt/square meter·kelvin | 0.001 | kilowatt/square meter·kelvin (kW/(m²·K)) |
| 1 watt/square meter·kelvin | 0.8598452279 | kilocalorie/hour·square meter·°C (kcal/(h·m²·°C)) |
| 1 watt/square meter·kelvin | 0.1761101837 | BTU/hour·square foot·°F (Btu/(h·ft²·°F)) |
What each unit actually is
Most converters give you a number and stop. Where a figure is exact by definition we say so, and where it is an average or shifts with conditions we say that too — that is usually the thing you needed to know.
| Unit | Symbol | What it actually is |
|---|---|---|
| watt/square meter·kelvin | W/(m²·K) | SI. Also the U-value in metric building work. |
| kilowatt/square meter·kelvin | kW/(m²·K) | |
| kilocalorie/hour·square meter·°C | kcal/(h·m²·°C) | |
| BTU/hour·square foot·°F | Btu/(h·ft²·°F) | The US U-value. |
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