Phots (ph)
The phot is the CGS unit of illuminance, one lumen per square centimeter.
Convert phots to any illuminance unit
1 phot = 10,000 lux
Quick facts
- Unit
- Phot (plural: phots)
- Symbol
- ph
- Measures
- Illuminance
- System
- Units
- Equals
- 10,000 lux
- Definition
- 10,000 lux.
- Also written
- lumen per square centimeter
1 phot in other units
| Lux | 10,000 lx |
| Foot-candles | 929.0304014 fc |
What is a phot?
The phot is the CGS unit of illuminance, one lumen per square centimeter.
Where the phot sits among illuminance units
The phot is number 6 of 6 on our scale of illuminance units, ordered from smallest to largest.
Top phot conversions
Convert phots to all 5 other units
Units
Convert to phots
Frequently asked questions
What is a phot?
The phot is the CGS unit of illuminance, one lumen per square centimeter.
How is the phot defined?
10,000 lux.
How many lux are in a phot?
One phot equals 10,000 lux.
How many foot-candles are in a phot?
One phot equals 929.0304014 foot-candles.