Heat Transfer Coefficient Converter
The heat transfer coefficient describes how effectively heat moves between a surface and a fluid, per unit area and per degree of temperature difference. The SI unit is the watt per square metre-kelvin, W/(m²·K).
1 Watt/Meter²-Kelvin = 0.1761101837 BTU/Hour-Foot²-Fahrenheit
How to convert Watt/Meter²-Kelvin to BTU/Hour-Foot²-Fahrenheit
One Watt/Meter²-Kelvin equals 0.1761101837 BTU/Hour-Foot²-Fahrenheit, so multiply any value in W/(m²·K) by 0.1761101837 to get BTU/(h·ft²·deg F). To convert back, divide by 0.1761101837 — or multiply by 5.678263341.
BTU/(h·ft²·deg F) = W/(m²·K) × 0.1761101837
Example: 25 W/(m²·K) × 0.1761101837 = 4.402754592 BTU/(h·ft²·deg F).
Watt/Meter²-Kelvin to BTU/Hour-Foot²-Fahrenheit table
| Watt/Meter²-Kelvin (W/(m²·K)) | BTU/Hour-Foot²-Fahrenheit (BTU/(h·ft²·deg F)) |
|---|---|
| 1 | 0.1761101837 |
| 2 | 0.3522203674 |
| 3 | 0.528330551 |
| 4 | 0.7044407347 |
| 5 | 0.8805509184 |
| 10 | 1.761101837 |
| 15 | 2.641652755 |
| 20 | 3.522203674 |
| 25 | 4.402754592 |
| 50 | 8.805509184 |
| 75 | 13.20826378 |
| 100 | 17.61101837 |
| 250 | 44.02754592 |
| 500 | 88.05509184 |
| 1,000 | 176.1101837 |
BTU/Hour-Foot²-Fahrenheit to Watt/Meter²-Kelvin table
| BTU/Hour-Foot²-Fahrenheit (BTU/(h·ft²·deg F)) | Watt/Meter²-Kelvin (W/(m²·K)) |
|---|---|
| 1 | 5.678263341 |
| 2 | 11.35652668 |
| 3 | 17.03479002 |
| 4 | 22.71305336 |
| 5 | 28.39131671 |
| 10 | 56.78263341 |
| 15 | 85.17395012 |
| 20 | 113.5652668 |
| 25 | 141.9565835 |
| 50 | 283.9131671 |
| 75 | 425.8697506 |
| 100 | 567.8263341 |
| 250 | 1,419.565835 |
| 500 | 2,839.131671 |
| 1,000 | 5,678.263341 |
Heat Transfer Coefficient units at a glance
All 9 units this converter supports, each expressed in Watt/Meter²-Kelvin (W/(m²·K)) and the other way round.
| Unit | Symbol | 1 unit in W/(m²·K) | 1 W/(m²·K) in unit |
|---|---|---|---|
| Watt/Meter²-Kelvin | W/(m²·K) | 1 | 1 |
| Watt/Meter²-Celsius | W/(m²·deg C) | 1 | 1 |
| Kilowatt/Meter²-Kelvin | kW/(m²·K) | 1,000 | 0.001 |
| Watt/Centimeter²-Kelvin | W/(cm²·K) | 10,000 | 0.0001 |
| Calorie/Second-Centimeter²-Celsius | cal/(s·cm²·deg C) | 41,840 | 0.00002390057361 |
| Kilocalorie/Hour-Meter²-Celsius | kcal/(h·m²·deg C) | 1.163 | 0.8598452279 |
| BTU/Hour-Foot²-Fahrenheit | BTU/(h·ft²·deg F) | 5.678263341 | 0.1761101837 |
| BTU/Hour-Foot²-Rankine | BTU/(h·ft²·deg R) | 5.678263341 | 0.1761101837 |
| BTU/Second-Foot²-Fahrenheit | BTU/(s·ft²·deg F) | 20,441.74803 | 0.00004891949547 |
Where heat transfer coefficient conversions are used
Designing heat exchangers, radiators, boilers and cooling systems, and calculating convective heat loss.
Frequently asked questions
What is 1 Watt/Meter²-Kelvin in BTU/Hour-Foot²-Fahrenheit?
1 Watt/Meter²-Kelvin (W/(m²·K)) is 0.1761101837 BTU/Hour-Foot²-Fahrenheit (BTU/(h·ft²·deg F)).
What is 1 BTU/Hour-Foot²-Fahrenheit in Watt/Meter²-Kelvin?
1 BTU/Hour-Foot²-Fahrenheit (BTU/(h·ft²·deg F)) is 5.678263341 Watt/Meter²-Kelvin (W/(m²·K)).
How do I convert Watt/Meter²-Kelvin to BTU/Hour-Foot²-Fahrenheit?
Multiply the value in Watt/Meter²-Kelvin by 0.1761101837. For example, 5 W/(m²·K) × 0.1761101837 = 0.8805509184 BTU/(h·ft²·deg F). To go the other way, divide by 0.1761101837.
How many units does the heat transfer coefficient converter support?
It converts between 9 units: Watt/Meter²-Kelvin, Watt/Meter²-Celsius, Kilowatt/Meter²-Kelvin, Watt/Centimeter²-Kelvin, Calorie/Second-Centimeter²-Celsius, Kilocalorie/Hour-Meter²-Celsius, BTU/Hour-Foot²-Fahrenheit, BTU/Hour-Foot²-Rankine, BTU/Second-Foot²-Fahrenheit.
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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.