Luminous intensity in candela (cd) to illuminance in lux (lx) 计算器 and how to 计算.
输入 the luminous intensity in candela, distance from 光照 source, select feet or meters and press the 计算 button to get the illuminance in lux:
The illuminance Ev in lux (lx) is equal to 10.76391 times the luminous intensity Iv in candela (cd),
divided by the square distance from the 光照 source d2 in square feet (ft2):
Ev(lx) = 10.76391 × Iv(cd) / (d(ft))2
The illuminance Ev in lux (lx) is equal to the luminous intensity Iv in candela (cd),
divided by the square distance from the 光照 source d2 in square meters (m2):
Ev(lx) = Iv(cd) / (d(m))2