Convert Watt per square inch to Milliwatt per square metre
Convert Watt per square inch (W/in²) to Milliwatt per square metre (mW/m²) instantly and accurately.
Conversion Formula
mW/m² = W/in² × 1550003.1
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 Milliwatt per square metre
The milliwatt per square metre (mW/m²) equals 10⁻³ W/m². Relevant in geothermal surveys: global average continental heat flux ≈ 65 mW/m², oceanic ≈ 101 mW/m². Used in building physics for quantifying very small heat leakage through ultra-high-performance insulation. 1 mW/m² = 10⁻³ W/m² = 1 erg/(s·cm²).
Quick Reference Table
| Watt per square inch (W/in²) | Milliwatt per square metre (mW/m²) |
|---|---|
| 1 W/in² | 1550000 mW/m² |
| 2 W/in² | 3100010 mW/m² |
| 5 W/in² | 7750020 mW/m² |
| 10 W/in² | 15500000 mW/m² |
| 25 W/in² | 38750100 mW/m² |
| 50 W/in² | 77500200 mW/m² |
| 100 W/in² | 155000000 mW/m² |