Convert Watt per square millimetre to Milliwatt per square metre
Convert Watt per square millimetre (W/mm²) to Milliwatt per square metre (mW/m²) instantly and accurately.
Conversion Formula
mW/m² = W/mm² × 1000000000
About Watt per square millimetre
The watt per square millimetre (W/mm²) equals exactly 10⁶ W/m². Used in high-power laser material processing - cutting, welding, and additive manufacturing - and electron beam applications. A 1 kW laser focused to 1 mm² achieves 1 W/mm². Numerically equal to MW/m². 1 W/mm² = 10⁶ W/m² = 100 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 millimetre (W/mm²) | Milliwatt per square metre (mW/m²) |
|---|---|
| 1 W/mm² | 1000000000 mW/m² |
| 2 W/mm² | 2 × 109 mW/m² |
| 5 W/mm² | 5 × 109 mW/m² |
| 10 W/mm² | 1 × 1010 mW/m² |
| 25 W/mm² | 2.5 × 1010 mW/m² |
| 50 W/mm² | 5 × 1010 mW/m² |
| 100 W/mm² | 1 × 1011 mW/m² |