Convert Lumens per square inch to Millilux
Convert Lumens per square inch (lm/in²) to Millilux (mlx) instantly and accurately.
Conversion Formula
mlx = lm/in² × 1550003.1
About Lumens per square inch
The lumen per square inch (lm/in²) equals 1/0.00064516 lx ≈ 1 550 lx. Used in US optics and LED backlight datasheets when specifying output over small aperture areas. Rare in general lighting but found in US optical engineering catalogs and LCD backlight specifications. 1 lm/in² = 1/0.00064516 lx.
About Millilux
The millilux (mlx) equals 10⁻³ lx, also called 1 nox (CIE historical unit). Moonless clear sky: ~1 mlx; quarter moon: ~20-50 mlx; full moon at zenith: ~100-270 mlx. Minimum for dark-adapted outdoor navigation. Emergency exit pathway lighting is typically 1-5 mlx. 1 mlx = 10⁻³ lx = 1 nox.
Quick Reference Table
| Lumens per square inch (lm/in²) | Millilux (mlx) |
|---|---|
| 1 lm/in² | 1550000 mlx |
| 2 lm/in² | 3100010 mlx |
| 5 lm/in² | 7750020 mlx |
| 10 lm/in² | 15500000 mlx |
| 25 lm/in² | 38750100 mlx |
| 50 lm/in² | 77500200 mlx |
| 100 lm/in² | 155000000 mlx |