Thermal Resistance Converter
Thermal resistance measures how strongly a component or layer resists the flow of heat. The SI unit is the kelvin per watt (K/W): the temperature difference produced for each watt of heat passing through.
1 Kelvin/Watt = 0.5275279263 Degree Fahrenheit-Hour/BTU
How to convert Kelvin/Watt to Degree Fahrenheit-Hour/BTU
One Kelvin/Watt equals 0.5275279263 Degree Fahrenheit-Hour/BTU, so multiply any value in K/W by 0.5275279263 to get deg F·h/BTU. To convert back, divide by 0.5275279263 — or multiply by 1.895634241.
deg F·h/BTU = K/W × 0.5275279263
Example: 25 K/W × 0.5275279263 = 13.18819816 deg F·h/BTU.
Kelvin/Watt to Degree Fahrenheit-Hour/BTU table
| Kelvin/Watt (K/W) | Degree Fahrenheit-Hour/BTU (deg F·h/BTU) |
|---|---|
| 1 | 0.5275279263 |
| 2 | 1.055055853 |
| 3 | 1.582583779 |
| 4 | 2.110111705 |
| 5 | 2.637639632 |
| 10 | 5.275279263 |
| 15 | 7.912918895 |
| 20 | 10.55055853 |
| 25 | 13.18819816 |
| 50 | 26.37639632 |
| 75 | 39.56459447 |
| 100 | 52.75279263 |
| 250 | 131.8819816 |
| 500 | 263.7639632 |
| 1,000 | 527.5279263 |
Degree Fahrenheit-Hour/BTU to Kelvin/Watt table
| Degree Fahrenheit-Hour/BTU (deg F·h/BTU) | Kelvin/Watt (K/W) |
|---|---|
| 1 | 1.895634241 |
| 2 | 3.791268481 |
| 3 | 5.686902722 |
| 4 | 7.582536963 |
| 5 | 9.478171203 |
| 10 | 18.95634241 |
| 15 | 28.43451361 |
| 20 | 37.91268481 |
| 25 | 47.39085602 |
| 50 | 94.78171203 |
| 75 | 142.172568 |
| 100 | 189.5634241 |
| 250 | 473.9085602 |
| 500 | 947.8171203 |
| 1,000 | 1,895.634241 |
Thermal Resistance units at a glance
All 5 units this converter supports, each expressed in Kelvin/Watt (K/W) and the other way round.
| Unit | Symbol | 1 unit in K/W | 1 K/W in unit |
|---|---|---|---|
| Kelvin/Watt | K/W | 1 | 1 |
| Degree Celsius/Watt | deg C/W | 1 | 1 |
| Degree Fahrenheit-Hour/BTU | deg F·h/BTU | 1.895634241 | 0.5275279263 |
| Degree Celsius-Hour/Kilocalorie | deg C·h/kcal | 0.8598452279 | 1.163 |
| Degree Fahrenheit-Second/BTU | deg F·s/BTU | 0.0005265650668 | 1,899.100535 |
Where thermal resistance conversions are used
Sizing heat sinks for processors and power electronics, and comparing insulation layers.
Frequently asked questions
What is 1 Kelvin/Watt in Degree Fahrenheit-Hour/BTU?
1 Kelvin/Watt (K/W) is 0.5275279263 Degree Fahrenheit-Hour/BTU (deg F·h/BTU).
What is 1 Degree Fahrenheit-Hour/BTU in Kelvin/Watt?
1 Degree Fahrenheit-Hour/BTU (deg F·h/BTU) is 1.895634241 Kelvin/Watt (K/W).
How do I convert Kelvin/Watt to Degree Fahrenheit-Hour/BTU?
Multiply the value in Kelvin/Watt by 0.5275279263. For example, 5 K/W × 0.5275279263 = 2.637639632 deg F·h/BTU. To go the other way, divide by 0.5275279263.
How many units does the thermal resistance converter support?
It converts between 5 units: Kelvin/Watt, Degree Celsius/Watt, Degree Fahrenheit-Hour/BTU, Degree Celsius-Hour/Kilocalorie, Degree Fahrenheit-Second/BTU.
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Figures on this page are calculated with the same conversion factors as the converter above and shown to up to 10 significant figures. See our disclaimer before relying on a result in a professional or safety-critical context.