Illuminance Converter

Convert lux, foot-candles and lumens per square meter for lighting plans.

Lux (lx):

Foot-candles (fc):

–lm / m²

–Typical use

Guide: hallway 100 lx · living room 200 lx · office 500 lx · workshop 750 lx · surgery 1000+ lx.

How to use

Enter a light level in any unit — equivalents update live; everything runs in your browser.

What is a foot-candle?

The illuminance of one lumen per square foot — 1 fc ≈ 10.764 lux.

How much light does an office need?

Roughly 300–500 lux on desks; living rooms 100–300 lux.

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