Illumination conversion
1 phot (ph) equals 10,000 lux (lx). Enter any value below to convert from ph to lx.
Enter a value and choose units. Results update instantly.
1 ph = 10,000 lx
| Unit | Value |
|---|---|
| Lux lx | 10,000 |
| Meter-candela m·cd | 10,000 |
| Centimeter-candela cm·cd | 1 |
| Foot-candela ft·cd | 929.030399716 |
| Phot ph | 1 |
| Nox nox | 10,000,000 |
| Lumen/square meter lm/m² | 10,000 |
| Lumen/square centimeter lm/cm² | 1 |
| Lumen/square foot lm/ft² | 929.030399716 |
| Watt/square centimeter (at 555 nm) W/cm² | 0.0000146413 |
Formula
Use this relationship for a direct conversion:
2 ph = 20,000 lx.
SI relationships follow the cited reference. Conventional and domain-specific factors use the established ConvertWin factor inventory; verify safety-critical work against the governing standard.
Quick reference
| Phot (ph) | Lux (lx) |
|---|---|
| 0.01 | 100 |
| 0.1 | 1,000 |
| 1 | 10,000 |
| 2 | 20,000 |
| 5 | 50,000 |
| 10 | 100,000 |
| 25 | 250,000 |
| 50 | 500,000 |
| 100 | 1,000,000 |
| 1,000 | 10,000,000 |
From unit
Phot (ph) is a unit of Illumination. 1 ph = 10,000 lx
Symbol: ph
To unit
Lux (lx) is the base unit of Illumination in the International System of Units (SI).
Symbol: lx
Keep converting
Source
The SI framework is checked against NIST Guide for the Use of the International System of Units; conventional factors come from the extended factor inventory. Calculations use full internal precision before display rounding.
View the complete illumination converterQuestions
Use the formula lx = ph x 10,000. 1 phot (ph) equals 10,000 lux (lx).
SI relationships follow the cited reference. Conventional and domain-specific factors use the established ConvertWin factor inventory; verify safety-critical work against the governing standard.
