Convert Watt per square inch to Watt per square metre
Convert Watt per square inch (W/in²) to Watt per square metre (W/m²) instantly and accurately.
Conversion Formula
W/m² = W/in² × 1550.0031
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 Watt per square metre
The watt per square metre (W/m²) is the SI coherent unit for heat flux density and irradiance. Solar irradiance at Earth's surface ≈ 1000 W/m²; solar constant ≈ 1361 W/m²; human skin radiative emission ≈ 100 W/m²; global average geothermal flux ≈ 0.087 W/m². Referenced in ISO 80000-4. 1 W/m² = 1 J/(s·m²) = 10⁻³ kW/m².
Quick Reference Table
| Watt per square inch (W/in²) | Watt per square metre (W/m²) |
|---|---|
| 1 W/in² | 1550 W/m² |
| 2 W/in² | 3100.01 W/m² |
| 5 W/in² | 7750.02 W/m² |
| 10 W/in² | 15500 W/m² |
| 25 W/in² | 38750.1 W/m² |
| 50 W/in² | 77500.2 W/m² |
| 100 W/in² | 155000 W/m² |