Convert Millilux to Phots (mlx to ph)
1 millilux (mlx) = 1 × 10⁻⁷ phots (ph). 1 ph = 10000000 mlx. Example: 15 mlx = 15 × 1 × 10⁻⁷ = 0.0000015 ph.
Also searched as millilux to ph, millilux in ph, millilux into phots, mlx to ph, mlx in phots, mlx into phot, millilux to phot, mlx to phots converter and how many phots in a millilux.
1 mlx = 1e-7 ph
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk millilux to phot converter to paste a column from Excel.
How to Convert Millilux to Phot
- 1 mlx = 1 × 10⁻⁷ ph
- 1 ph = 10000000 mlx
- Example: convert 15 mlx to ph: 15 mlx = 15 × 1 × 10⁻⁷ ph = 0.0000015 ph
Formula
ph = mlx ÷ 10000000
Derivation from SI units:
- 1 mlx = 10⁻³ lx.
- 1 ph = 1 lm/cm² = 10⁴ lx.
- 1 mlx = 0.001 lx ÷ 10000 lx per ph = 1 × 10⁻⁷ ph
Both units are defined exactly, so the factor is exact. Millilux definition: millilux; Phot definition: phot.
Worked examples
- A reading of 10 mlx converts to 0.000001 ph.
10 mlx × 1 × 10⁻⁷ = 0.000001 ph - A value of 250 mlx is 0.000025 ph.
250 mlx × 1 × 10⁻⁷ = 0.000025 ph
Millilux to Phot conversion table
| Millilux (mlx) | Phots (ph) |
|---|---|
| 0.1 mlx | 1 × 10⁻⁸ ph |
| 1 mlx | 1 × 10⁻⁷ ph |
| 2 mlx | 2 × 10⁻⁷ ph |
| 10 mlx | 0.000001 ph |
| 50 mlx | 0.000005 ph |
| 100 mlx | 0.00001 ph |
| 250 mlx | 0.000025 ph |
| 500 mlx | 0.00005 ph |
| 1000 mlx | 0.0001 ph |
| 5000 mlx | 0.0005 ph |
Where it's used
Millilux are used for night-vision and low-light camera specifications, while phots appear in older optics literature. Both measure illuminance (light falling on a surface), so the conversion is a fixed factor.
Millilux to other illuminance units
| Conversion | 1 mlx equals |
|---|---|
| millilux to phot | 1 × 10⁻⁷ ph |
| millilux to lux | 0.001 lx |
| millilux to foot-candle | 0.00009290304 fc |
| millilux to kilolux | 0.000001 klx |
Frequently asked questions
How many phots are in 1 millilux?
1 mlx = 1 × 10⁻⁷ ph.
How do I convert millilux to phots?
Multiply the value in mlx by 1 × 10⁻⁷, or divide it by 10000000. For example, 15 mlx × 1 × 10⁻⁷ = 0.0000015 ph.
Is the mlx to ph conversion exact?
Yes. Both units are defined exactly, and 1 mlx is exactly 1 × 10⁻⁷ ph.
Sources
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 4 (becquerel, gray, sievert, lux) and Table 2 (candela).
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "phot".
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Millilux to Phots (mlx to ph). Retrieved October 25, 2026, from https://scientificconverters.com/illuminance/millilux-to-phots/
IEEE
Scientific Converters, "Convert Millilux to Phots (mlx to ph)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/illuminance/millilux-to-phots/