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Illuminance Conversion Table

E notation is an alternative format of the scientific notation 10x.
For example: 103 = E+3.
Base units are marked in black.
Derived units are marked in gray.
Conversion Table: Illuminance
Unit NameRelation to lux [lx]
foot-candle [ft c]10.746 [lx]
lumen/square foot [lm/ft2]10.746 [lx]
lumen/square inch [lm/in2]1550 [lx]
lumen/square meter [lm/m2]1 [lx]
lumen/square millimeter 1E+6 [lx]
lumen/square centimeter 10000 [lx]
lumen/square kilometer 1E-6 [lx]
lux [lx]1 [lx]
meter-candle [m c]1 [lx]
nox 0.001 [lx]
phot 10000 [lx]
watt/square meter [W/m2]683 [lx]
watt/square millimeter 6.83E+8 [lx]
watt/square centimeter 6.83E+6 [lx]
watt/square kilometer 6.83E-4 [lx]

Related Infomation

The SI Unit of Illumination


In photometry, illuminance is the total luminous flux incident on a surface, per unit area. It is a measure of the intensity of the incident light, wavelength-weighted by the luminosity function to correlate with human brightness perception.
Source: wikipedia
Version 4.0 - Last updated: Sunday, August 16, 2015
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