Illuminance

Illuminance was formerly often called brightness, but this leads to confusion with other uses of the word, such as to mean luminance. This Illuminance converter allows you to convert candle-steradian/sq. meter (c·sr/m²), centimeter-candle (cm·c), foot-candle (ft·c, fc), lumen/sq. centimeter (lm/cm²), lumen/sq. foot (lm/ft²), lumen/sq. inch (lm/in²), lumen/sq. meter (lm/m²), lux (lx), meter-candle (m·c), milliphot (mph), nox, phot (ph), among other units related to Illuminance.