Luminance Conversion Calculator

Luminance is a photometric measure of the luminous intensity per unit area of light travelling in a given direction. It describes the amount of light that is emitted from a particular area, and falls within a given solid angle.

Illuminance Conversion Calculator

Illuminance is the total luminous flux incident on a surface, per unit area. It is a measure of how much the incident light illuminates the surface, wavelength-weighted to correlate with human brightness perception.