Candela to lux free online calculation

How to convert luminous intensity in candela (cd) to illuminance in lux (lx).

You can calculate lux from candela and distance from light source.

You can't convert candela to lux, since lux and candela do not represent the same quantity.

• Candela tp lux calculation with distance in feet
• Candela to lux calculation with distance in meters

Candela to lux calculation

Candela tp 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

Lux to candela calculation »