# Light Illumination Converter Light illumination is the amount of light illuminating a point on a surface. Illuminating sources can be natural (daylight) or from lamps, lighter, etc.

The definition of Light Illumination determines the amount of light that covers a surface. If Ø is the luminous flux and S is the area of the given surface then the illuminance E is determined by E = ∅/S.

Light converters
 Enter Value: <-----Select Your Choice---> Centimeter candle Flame Foot candle Lumen/square centimetre Lumen/square foot Lumen/square meter Lux Meter candle Nox Phot Watt/square centimeter Centimeter candle: cm*c Flame: fl Foot candle : ft*c Lumen/square cm: lm/cm2 Lumen/square foot: lm*ft2 Lumen/square meter: lm/m2 Lux: lx Meter candle: mc Nox : nx Phot: ph Watt/square centimeter: W/cm2
Formula
L=I/S

Where,
I is the luminous intensity and S is the area of the source surface perpendicular to the given direction.

The unit of illumination in SI system is lx, and in foot-pound system it is foot-candle. One lx is the illuminance of 1 m² surface area uniformly lighted by 1 lm of luminous flux. The following drawing explains this definition. One foot-candle is 10.76 lux.

Example:
Convert the 5 centimeter candle to various light illumination units.

Solution:
centimeter candle = 5
flame = 1161.288
foot candle = 4645.152
lumen/square centimeter = 5
lumen/square foot = 4645.152
lumen/square meter = 50000
lux = 50000
meter candle = 50000
nox = 50000000
phot = 5
watt/square centimeter = 0.007299999999999999

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