Heat Transfer Coefficient / W/(m²·K) → Btu IT/(h·ft²·°F)
Convert Watts per square meter kelvin to Btu IT per hour square foot Fahrenheit degree
Convert surface heat-transfer coefficients between SI and customary units. Convert Watts per square meter kelvin (W/(m²·K)) to Btu IT per hour square foot Fahrenheit degree (Btu IT/(h·ft²·°F)). Find the formula, worked examples, unit definitions, and practical guidance below.
Reverse: Btu IT per hour square foot Fahrenheit degree to Watts per square meter kelvin →
How to convert watts per square meter kelvin to Btu IT per hour square foot Fahrenheit degree
The coefficient relates heat flux to a temperature difference. It is not thermal conductivity; geometry and flow conditions matter when determining the original coefficient.
Use x for the value in W/(m²·K), b for the intermediate value in W/(m²·K), and y for the result in Btu IT/(h·ft²·°F).
Btu IT/(h·ft²·°F) = W/(m²·K) ÷ 5.678263341113487
Worked examples
10 W/(m²·K) ≈ 1.76110183682 Btu IT/(h·ft²·°F)
Step 1: (10 × 1) ≈ 10 W/(m²·K).
Step 2: 10 ÷ 5.67826334111 ≈ 1.76110183682 Btu IT/(h·ft²·°F).20 W/(m²·K) ≈ 3.52220367365 Btu IT/(h·ft²·°F)
Step 1: (20 × 1) ≈ 20 W/(m²·K).
Step 2: 20 ÷ 5.67826334111 ≈ 3.52220367365 Btu IT/(h·ft²·°F).
Results are rounded to 12 significant digits. Converting units does not increase the precision of the original measurement. Very large or small values outside JavaScript’s finite numeric range are rejected.
About Watts per square meter kelvin
Watts per square meter kelvin (W/(m²·K)) measures heat transfer coefficient under the conventions above. The base value in W/(m²·K) is (x × 1), where x is the numerical value in W/(m²·K). Factors shown here are rounded for display; calculations use the stored factor.
About Btu IT per hour square foot Fahrenheit degree
Btu IT per hour square foot Fahrenheit degree (Btu IT/(h·ft²·°F)) measures heat transfer coefficient under the conventions above. The base value in W/(m²·K) is (x × 5.67826334111), where x is the numerical value in Btu IT/(h·ft²·°F). Factors shown here are rounded for display; calculations use the stored factor.
Definitions and sources
Carry the same physical assumptions into subsequent physics calculations.
Watts per square meter kelvin to Btu IT per hour square foot Fahrenheit degree reference table
| Watts per square meter kelvin (W/(m²·K)) | Btu IT per hour square foot Fahrenheit degree (Btu IT/(h·ft²·°F)) |
|---|---|
| 1 | 0.176110183682 |
| 5 | 0.880550918412 |
| 10 | 1.76110183682 |
| 25 | 4.40275459206 |
| 50 | 8.80550918412 |
| 100 | 17.6110183682 |
| 1000 | 176.110183682 |
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