Luminance Calculator

Luminance represents the density of luminous flux (light) leaving a surface in a particular direction. This value provides a sense of how bright the surface appears from the viewing point. You want to measure Luminance for things that light up. This table allows conversion of values between the various units of measurement.

Type a number into one of the numeric fields and hit Enter or press the Calculate button to calculate the other numeric fields.

(fL)
(cd/m²)
(cd/in²)
(cd/ft&uup2;)