BTU per hour square foot degree Fahrenheit to Watt per square meter kelvin Converter
1 BTU per hour square foot degree Fahrenheit is about 5.678263341 watts per square meter kelvin. Convert BTUs per hour square foot degree Fahrenheit (BTU/(h·ft²·°F)) to watts per square meter kelvin (W/(m²·K)) below: type a value and the result updates as you type.
BTU/(h·ft²·°F) to W/(m²·K) calculator
Result
BTU per hour square foot degree Fahrenheit to Watt per square meter kelvin conversion
1 BTU/(h·ft²·°F) ≈ 5.678263341 W/(m²·K)one BTU per hour square foot degree Fahrenheit in watts per square meter kelvin
1 W/(m²·K) ≈ 0.1761101837 BTU/(h·ft²·°F)one watt per square meter kelvin in BTUs per hour square foot degree Fahrenheit
BTU per hour square foot degree Fahrenheit (BTU/(h·ft²·°F)): US unit of heat transfer coefficient and U-value, based on the BTU (IT).
Watt per square meter kelvin (W/(m²·K)): SI unit of heat transfer coefficient (and of U-value): heat flow per area per kelvin of temperature difference.
Source:BTU per hour square foot degree Fahrenheit: NIST Special Publication 811 (2008), Appendix B.8; Watt per square meter kelvin: SI Brochure, 9th edition (BIPM, 2019)
How to convert BTUs per hour square foot degree Fahrenheit to watts per square meter kelvin
To convert BTUs per hour square foot degree Fahrenheit to watts per square meter kelvin, multiply the number of BTUs per hour square foot degree Fahrenheit by about 5.678263341.
Formula
W/(m²·K) = BTU/(h·ft²·°F) × 5.678263341
The factor is rounded here. The calculator uses the exact value.
Examples
- 5 BTU/(h·ft²·°F) = 5 × 5.678263341 ≈ 28.39131671 W/(m²·K)
- 25 BTU/(h·ft²·°F) = 25 × 5.678263341 ≈ 141.9565835 W/(m²·K)
- 100 BTU/(h·ft²·°F) = 100 × 5.678263341 ≈ 567.8263341 W/(m²·K)
BTU per hour square foot degree Fahrenheit to Watt per square meter kelvin conversion table
| BTU per hour square foot degree Fahrenheit (BTU/(h·ft²·°F)) | Watt per square meter kelvin (W/(m²·K)) |
|---|---|
| 0.1 BTU/(h·ft²·°F) | 0.5678263341 W/(m²·K) |
| 0.5 BTU/(h·ft²·°F) | 2.839131671 W/(m²·K) |
| 1 BTU/(h·ft²·°F) | 5.678263341 W/(m²·K) |
| 2 BTU/(h·ft²·°F) | 11.35652668 W/(m²·K) |
| 3 BTU/(h·ft²·°F) | 17.03479002 W/(m²·K) |
| 5 BTU/(h·ft²·°F) | 28.39131671 W/(m²·K) |
| 10 BTU/(h·ft²·°F) | 56.78263341 W/(m²·K) |
| 20 BTU/(h·ft²·°F) | 113.5652668 W/(m²·K) |
| 25 BTU/(h·ft²·°F) | 141.9565835 W/(m²·K) |
| 50 BTU/(h·ft²·°F) | 283.9131671 W/(m²·K) |
| 100 BTU/(h·ft²·°F) | 567.8263341 W/(m²·K) |
| 250 BTU/(h·ft²·°F) | 1419.565835 W/(m²·K) |
| 500 BTU/(h·ft²·°F) | 2839.131671 W/(m²·K) |
| 1000 BTU/(h·ft²·°F) | 5678.263341 W/(m²·K) |
Values rounded to 10 significant digits where needed.
Frequently asked questions
- How many watts per square meter kelvin are in one BTU per hour square foot degree Fahrenheit?
- One BTU per hour square foot degree Fahrenheit is about 5.678263341 watts per square meter kelvin.
- How do I convert watts per square meter kelvin to BTUs per hour square foot degree Fahrenheit?
- To convert watts per square meter kelvin to BTUs per hour square foot degree Fahrenheit, multiply the number of watts per square meter kelvin by about 0.1761101837. The formula is BTU/(h·ft²·°F) = W/(m²·K) × 0.1761101837.
- Is this conversion exact?
- Yes. Both units have exact definitions, but the factor has more decimal places than can be shown, so displayed results are rounded. The calculator works with 50 significant digits before rounding.
- Which is larger, a BTU per hour square foot degree Fahrenheit or a watt per square meter kelvin?
- A BTU per hour square foot degree Fahrenheit is about 5.678263341 times larger than a watt per square meter kelvin. In other words, a watt per square meter kelvin is about 0.1761101837 of a BTU per hour square foot degree Fahrenheit.