Use this free, accurate lux to phot calculator to convert between Lux (lx) and Phot (ph). Includes live instant results, complete mathematical formulas, conversion tables, and step-by-step examples.
0.0001 Phot
1 lx is equal to 0.0001 ph.
ph = lx × 0.0001
illuminance Converters
To convert from Lux to Phot, multiply the value in Lux by 0.0001 (or use the formula: ph = lx × 0.0001).
Take your initial measurement in Lux (lx). For instance, let's convert 1 lx.
Multiply by the standard conversion factor (0.0001).
The final converted measurement equals 0.0001 Phot (ph).
Compare standard reference values and common conversion benchmarks.
| Lux (lx) | Phot (ph) | Action |
|---|---|---|
| 1 lx | 0.0001 ph | |
| 2 lx | 0.0002 ph | |
| 3 lx | 0.0003 ph | |
| 5 lx | 0.0005 ph | |
| 10 lx | 0.001 ph | |
| 15 lx | 0.0015 ph | |
| 20 lx | 0.002 ph | |
| 25 lx | 0.0025 ph | |
| 50 lx | 0.005 ph | |
| 75 lx | 0.0075 ph | |
| 100 lx | 0.01 ph | |
| 250 lx | 0.025 ph | |
| 500 lx | 0.05 ph | |
| 1000 lx | 0.1 ph |
Official standards, measurement systems, and real-world everyday applications.
The SI unit of illuminance, equal to one lumen per square meter.
Common Practical Uses
A CGS unit of illuminance equal to 10,000 lux or one lumen per square centimeter.
Common Practical Uses
Calculate from Phot (ph) back to Lux (lx).
Frequently used unit conversions in this category:
Explore other measurement and calculation tools:
There are 0.0001 phots in 1 lux. Exactly 1 lx is equal to 0.0001 ph.
The conversion formula is: Phot = ph = lx × 0.0001. Applying this to 1 lx gives: 1 × 0.0001 = 0.0001 ph.
To convert in reverse from phots to lux, multiply by the inverse factor: 1 ph = 10000 lx. Alternatively, divide your Phot amount by 0.0001.
For quick estimates, divide the Lux value by 10000.
Lux (lx) belongs to the Metric (SI) system, commonly used in Office lighting standards, Photography light meters, Architecture. In comparison, Phot (ph) is part of the CGS system, frequently applied in Optics laboratories, Historical astronomy, Scientific optics.
Key milestones include: 1 lx = 0.0001 ph, 5 lx = 0.0005 ph, 10 lx = 0.001 ph, 50 lx = 0.005 ph, and 100 lx = 0.01 ph.