Heat Transfer Coefficient Converter
Convert between 6 heat transfer coefficient units instantly. Enter a value, pick your units and get the result with the formula, a full conversion table and worked examples.
100 BTU/(h·ft²·°F) in all heat transfer coefficient units
Updates live as you type. Click a row to set it as the target unit.
| Unit | Symbol | Value |
|---|---|---|
| Watt per sq metre kelvin | W/(m²·K) | 567.826 |
| Kilocalorie per hour sq metre °C | kcal/(h·m²·°C) | 488.243 |
| BTU per hour sq foot °F | BTU/(h·ft²·°F) | 100 |
| Kilowatt per sq metre kelvin | kW/(m²·K) | 0.567826 |
| Watt per sq centimetre kelvin | W/(cm²·K) | 0.0567826 |
| Calorie per second sq centimetre °C | cal/(s·cm²·°C) | 0.0135623 |
How to Convert Heat Transfer Coefficient Units
The heat transfer coefficient links heat flux to temperature difference across a surface (q = h × A × ΔT). The SI unit is watt per square metre kelvin (W/(m²·K)); heat exchanger U values use the same units.
Every unit on this page is stored as a fixed factor relative to one reference unit, the watt per sq metre kelvin (W/(m²·K)). Converting is a two step multiply and divide:
- Multiply your value by the factor of the source unit to get the value in W/(m²·K).
- Divide that result by the factor of the target unit.
BTU per hour sq foot °F to Watt per sq metre kelvin conversion table
| BTU per hour sq foot °F (BTU/(h·ft²·°F)) | Watt per sq metre kelvin (W/(m²·K)) |
|---|---|
| 1 BTU/(h·ft²·°F) | 5.67826 W/(m²·K) |
| 2 BTU/(h·ft²·°F) | 11.3565 W/(m²·K) |
| 3 BTU/(h·ft²·°F) | 17.0348 W/(m²·K) |
| 4 BTU/(h·ft²·°F) | 22.7131 W/(m²·K) |
| 5 BTU/(h·ft²·°F) | 28.3913 W/(m²·K) |
| 6 BTU/(h·ft²·°F) | 34.0696 W/(m²·K) |
| 7 BTU/(h·ft²·°F) | 39.7478 W/(m²·K) |
| 8 BTU/(h·ft²·°F) | 45.4261 W/(m²·K) |
| 9 BTU/(h·ft²·°F) | 51.1044 W/(m²·K) |
| 10 BTU/(h·ft²·°F) | 56.7826 W/(m²·K) |
| 15 BTU/(h·ft²·°F) | 85.174 W/(m²·K) |
| 20 BTU/(h·ft²·°F) | 113.565 W/(m²·K) |
| 25 BTU/(h·ft²·°F) | 141.957 W/(m²·K) |
| 30 BTU/(h·ft²·°F) | 170.348 W/(m²·K) |
| 40 BTU/(h·ft²·°F) | 227.131 W/(m²·K) |
| 50 BTU/(h·ft²·°F) | 283.913 W/(m²·K) |
| 75 BTU/(h·ft²·°F) | 425.87 W/(m²·K) |
| 100 BTU/(h·ft²·°F) | 567.826 W/(m²·K) |
| 250 BTU/(h·ft²·°F) | 1,419.57 W/(m²·K) |
| 500 BTU/(h·ft²·°F) | 2,839.13 W/(m²·K) |
| 1,000 BTU/(h·ft²·°F) | 5,678.26 W/(m²·K) |
Heat Transfer Coefficient Units and Conversion Factors
Value of one unit expressed in W/(m²·K).
| Unit | Symbol | In W/(m²·K) |
|---|---|---|
| Watt per sq metre kelvin | W/(m²·K) | 1 |
| Kilocalorie per hour sq metre °C | kcal/(h·m²·°C) | 1.163 |
| BTU per hour sq foot °F | BTU/(h·ft²·°F) | 5.678263341 |
| Kilowatt per sq metre kelvin | kW/(m²·K) | 1,000 |
| Watt per sq centimetre kelvin | W/(cm²·K) | 10,000 |
| Calorie per second sq centimetre °C | cal/(s·cm²·°C) | 41,868 |
Frequently Asked Questions
What is the SI unit of heat transfer coefficient?
The SI unit of heat transfer coefficient is the watt per sq metre kelvin (W/(m²·K)). The heat transfer coefficient links heat flux to temperature difference across a surface (q = h × A × ΔT).
How do I convert W/(m²·K) to BTU/(h·ft²·°F)?
To convert watt per sq metre kelvin (W/(m²·K)) to btu per hour sq foot °f (BTU/(h·ft²·°F)), multiply the value in W/(m²·K) by 0.17611. For example, 1 W/(m²·K) = 0.17611 BTU/(h·ft²·°F).
How do I convert BTU/(h·ft²·°F) to W/(m²·K)?
To convert btu per hour sq foot °f (BTU/(h·ft²·°F)) to watt per sq metre kelvin (W/(m²·K)), multiply the value in BTU/(h·ft²·°F) by 5.67826. For example, 1 BTU/(h·ft²·°F) = 5.67826 W/(m²·K).
How do I convert kcal/(h·m²·°C) to W/(m²·K)?
To convert kilocalorie per hour sq metre °c (kcal/(h·m²·°C)) to watt per sq metre kelvin (W/(m²·K)), multiply the value in kcal/(h·m²·°C) by 1.163. For example, 1 kcal/(h·m²·°C) = 1.163 W/(m²·K).
Can I see a value in every heat transfer coefficient unit at once?
Yes. Enter a value and choose the source unit; the "all units" table below the converter instantly lists the equivalent in all 6 supported units. Click any row to make it the target unit.
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