Convert Watt per square inch to International table BTU per hour per square inch
Convert Watt per square inch (W/in²) to International table BTU per hour per square inch (BTU(IT)/(h·in²)) instantly and accurately.
Conversion Formula
BTU(IT)/(h·in²) = W/in² × 3.412141633
About Watt per square inch
The watt per square inch (W/in²) equals 1/(6.4516×10⁻⁴) ≈ 1550.003 W/m² (1 in = 0.0254 m). Used in US electronics thermal management for PCB power density, semiconductor die heat flux, and power module ratings. 1 W/in² ≈ 1550 W/m² ≈ 0.155 W/cm².
About International table BTU per hour per square inch
The international table BTU per hour per square inch (BTU(IT)/(h·in²)) equals 1055.05585262/(3600×6.4516×10⁻⁴) ≈ 454.26 W/m². Used for high heat flux applications such as electronic component cooling, jet engine combustor walls, and nuclear fuel assembly design in US customary units. 1 BTU(IT)/(h·in²) ≈ 454.26 W/m².
Quick Reference Table
| Watt per square inch (W/in²) | International table BTU per hour per square inch (BTU(IT)/(h·in²)) |
|---|---|
| 1 W/in² | 3.41214 BTU(IT)/(h·in²) |
| 2 W/in² | 6.82428 BTU(IT)/(h·in²) |
| 5 W/in² | 17.0607 BTU(IT)/(h·in²) |
| 10 W/in² | 34.1214 BTU(IT)/(h·in²) |
| 25 W/in² | 85.3035 BTU(IT)/(h·in²) |
| 50 W/in² | 170.607 BTU(IT)/(h·in²) |
| 100 W/in² | 341.214 BTU(IT)/(h·in²) |