Candela to lux calculator

Luminous intensity in candela (cd) to illuminance in lux (lx) calculator and how to calculate.

Enter the luminous intensity in candela, distance from light source, select feet or meters and press the Calculate button to get the illuminance in lux:

Candela to lux calculation with distance in feet

The illuminance E_v in lux (lx) is equal to 10.76391 times the luminous intensity I_v in candela (cd),

divided by the square distance from the light source d² in square feet (ft²):

E_v(lx) = 10.76391 × I_v(cd) / (d_(ft))²

_So

lux = 10.76391 × candela / square feet

_Or

lx = 10.76391 × cd / ft²

Candela to lux calculation with distance in meters

The illuminance E_v in lux (lx) is equal to the luminous intensity I_v in candela (cd),

divided by the square distance from the light source d² in square meters (m²):

E_v(lx) = I_v(cd) / (d_(m))²

_So

lux = candela / square meters

_Or

lx = cd / m²