Heat Transfer Coefficient / Btu IT/(h·ft²·°F) → W/(m²·K)
Convert Btu IT per hour square foot Fahrenheit degree to Watts per square meter kelvin
Convert surface heat-transfer coefficients between SI and customary units. Convert Btu IT per hour square foot Fahrenheit degree (Btu IT/(h·ft²·°F)) to Watts per square meter kelvin (W/(m²·K)). Find the formula, worked examples, unit definitions, and practical guidance below.
Reverse: Watts per square meter kelvin to Btu IT per hour square foot Fahrenheit degree →
How to convert Btu IT per hour square foot Fahrenheit degree to watts per square meter kelvin
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 Btu IT/(h·ft²·°F), b for the intermediate value in W/(m²·K), and y for the result in W/(m²·K).
W/(m²·K) = Btu IT/(h·ft²·°F) × 5.678263341113487
Worked examples
10 Btu IT/(h·ft²·°F) ≈ 56.7826334111 W/(m²·K)
Step 1: (10 × 5.67826334111) ≈ 56.7826334111 W/(m²·K).
Step 2: 56.7826334111 ÷ 1 ≈ 56.7826334111 W/(m²·K).20 Btu IT/(h·ft²·°F) ≈ 113.565266822 W/(m²·K)
Step 1: (20 × 5.67826334111) ≈ 113.565266822 W/(m²·K).
Step 2: 113.565266822 ÷ 1 ≈ 113.565266822 W/(m²·K).
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 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.
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.
Definitions and sources
Carry the same physical assumptions into subsequent physics calculations.
Btu IT per hour square foot Fahrenheit degree to watts per square meter kelvin reference table
| Btu IT per hour square foot Fahrenheit degree (Btu IT/(h·ft²·°F)) | Watts per square meter kelvin (W/(m²·K)) |
|---|---|
| 1 | 5.67826334111 |
| 5 | 28.3913167056 |
| 10 | 56.7826334111 |
| 25 | 141.956583528 |
| 50 | 283.913167056 |
| 100 | 567.826334111 |
| 1000 | 5678.26334111 |
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