Convert International table BTU per hour per square inch per degree Fahrenheit to International table BTU per second per square foot per degree Fahrenheit
Convert International table BTU per hour per square inch per degree Fahrenheit (BTU(IT)/(h·in²·°F)) to International table BTU per second per square foot per degree Fahrenheit (BTU(IT)/(s·ft²·°F)) instantly and accurately.
Conversion Formula
BTU(IT)/(s·ft²·°F) = BTU(IT)/(h·in²·°F) × 0.04
About International table BTU per hour per square inch per degree Fahrenheit
The international table BTU per hour per square inch per degree Fahrenheit (BTU(IT)/(h·in²·°F)) equals ≈ 817.67 W/(m²·K) (1 in² = 6.4516×10⁻⁴ m²; 1 °F = 5/9 K). Encountered in US electronics thermal management, semiconductor package datasheets, and heat sink characterisation where contact areas are measured in square inches. 1 BTU(IT)/(h·in²·°F) ≈ 817.67 W/(m²·K).
About International table BTU per second per square foot per degree Fahrenheit
The international table BTU per second per square foot per degree Fahrenheit (BTU(IT)/(s·ft²·°F)) equals ≈ 20442 W/(m²·K) (= 3600 × BTU(IT)/(h·ft²·°F)). Encountered in atmospheric re-entry aerodynamic heating analysis, solid rocket motor nozzle throat design, and nuclear reactor thermal-hydraulics with peak surface heat transfer rates. 1 BTU(IT)/(s·ft²·°F) ≈ 20442 W/(m²·K).
Quick Reference Table
| International table BTU per hour per square inch per degree Fahrenheit (BTU(IT)/(h·in²·°F)) | International table BTU per second per square foot per degree Fahrenheit (BTU(IT)/(s·ft²·°F)) |
|---|---|
| 1 BTU(IT)/(h·in²·°F) | 0.04 BTU(IT)/(s·ft²·°F) |
| 2 BTU(IT)/(h·in²·°F) | 0.08 BTU(IT)/(s·ft²·°F) |
| 5 BTU(IT)/(h·in²·°F) | 0.2 BTU(IT)/(s·ft²·°F) |
| 10 BTU(IT)/(h·in²·°F) | 0.4 BTU(IT)/(s·ft²·°F) |
| 25 BTU(IT)/(h·in²·°F) | 1 BTU(IT)/(s·ft²·°F) |
| 50 BTU(IT)/(h·in²·°F) | 2 BTU(IT)/(s·ft²·°F) |
| 100 BTU(IT)/(h·in²·°F) | 4 BTU(IT)/(s·ft²·°F) |