What is a Lux (lx)?

A lux (lx) is the SI unit of illuminance, equal to one lumen per square meter.

Definition

Symbol

lx

Category

Illuminance

System

SI

1 {unit} = {value} {otherUnit}

1 Lux = 0.0929031 Foot-candle (fc)

1 Lux = 0.0001 Phot (ph)

Common Uses

  • Office lighting standards
  • Photography exposure
  • Workplace safety regulations

Lux Conversions

Related Units

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