Convert Millimetre squared to Metre squared
Convert Millimetre squared (mm²) to Metre squared (m²) instantly and accurately.
Conversion Formula
m² = mm² × 1.000000000e-6
About Millimetre squared
The millimetre squared (mm²) equals 10⁻⁶ m² ≈ 1.013 × 10⁹ D, representing extremely high permeabilities beyond the range of most geological materials. It appears in geotechnical research for open rock fractures, coarse gravel channel beds, and large-cell open-foam engineered materials. 1 mm² = 10⁶ µm² = 10⁻⁶ m².
About Metre squared
The square metre (m²) is the SI coherent unit of permeability (dimension [L²]) and the reference for all other permeability units. Most geological materials have k far below 1 m²; clean coarse gravel: ≈10⁻⁸ m²; shale: 10⁻²²-10⁻¹⁵ m². 1 m² = 10¹² µm² ≈ 1.013 × 10¹² D.
Quick Reference Table
| Millimetre squared (mm²) | Metre squared (m²) |
|---|---|
| 1 mm² | 1 × 10-6 m² |
| 2 mm² | 2 × 10-6 m² |
| 5 mm² | 5 × 10-6 m² |
| 10 mm² | 1 × 10-5 m² |
| 25 mm² | 2.5 × 10-5 m² |
| 50 mm² | 5 × 10-5 m² |
| 100 mm² | 1 × 10-4 m² |