Convert International table BTU per hour per square foot to Watt per square inch
Convert International table BTU per hour per square foot (BTU(IT)/(h·ft²)) to Watt per square inch (W/in²) instantly and accurately.
Conversion Formula
W/in² = BTU(IT)/(h·ft²) × 0.002035215765
About International table BTU per hour per square foot
The international table BTU per hour per square foot (BTU(IT)/(h·ft²)) equals 1055.05585262/(3600×0.09290304) ≈ 3.15459 W/m². The standard US heat flux unit in ASHRAE, ASTM, and building codes for thermal resistance (R-value), boiler ratings, and heat exchanger design. 1 BTU(IT)/(h·ft²) ≈ 3.15459 W/m².
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.
Quick Reference Table
| International table BTU per hour per square foot (BTU(IT)/(h·ft²)) | Watt per square inch (W/in²) |
|---|---|
| 1 BTU(IT)/(h·ft²) | 0.00203522 W/in² |
| 2 BTU(IT)/(h·ft²) | 0.00407043 W/in² |
| 5 BTU(IT)/(h·ft²) | 0.0101761 W/in² |
| 10 BTU(IT)/(h·ft²) | 0.0203522 W/in² |
| 25 BTU(IT)/(h·ft²) | 0.0508804 W/in² |
| 50 BTU(IT)/(h·ft²) | 0.101761 W/in² |
| 100 BTU(IT)/(h·ft²) | 0.203522 W/in² |