Phot Unit conversions, including ph to lx, ph to m·c, ph to nx, ph to lm/m² etc.

Phot Unit Conversions

What is the Phot unit?

The Phot (symbol: ph) is an obsolete CGS photometric unit of illuminance, or luminous flux through an area. 1 ph = 1 lm/cm² = 10,000 lm/m² = 10000 lx = 10 klx.

Convert Phot to Other Illumination Units

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