The candela per square metre (symbol: cd/m2) is the unit of luminance in the International System of Units (SI).
[1] The term nit is believed to come from the Latin word nitēre, "to shine".
[2] As a measure of light emitted per unit area, this unit is frequently used to specify the brightness of a display device.
[3] Typically, monitors calibrated for SDR broadcast or studio color grading should have a brightness of 100 cd/m2.
[4] Most consumer desktop liquid crystal displays have luminances of 200 to 300 cd/m2.