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Phot (ph)

One lumen per square centimeter (CGS).

Result10,000

1 phot = 10,000 lux

Phot at a glance

Unit namePhot (plural: phots)
Symbolph
Quantity measuredIllumination
Measurement systemMetric
Also known asph
Definition exact?Yes — exact by definition

1 phot in other illumination units

Unit1 ph equals
Lux10,000 lx
Foot-candle929.0304 fc
Nox10,000,000 nx

Frequently asked questions

What is a phot?
One lumen per square centimeter (CGS).
What is the symbol for the phot?
The symbol for the phot is ph. It measures illumination.
How many lux are in a phot?
1 phot = 10,000 lux.
How many foot-candles are in a phot?
1 phot = 929.0304 foot-candles.