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What Is The Difference Between Lumens, Lux And Foot-Candles?

Lighting terminology can be confusing. You'll often hear different words like Lumens, Lux, and Foot-Candles, but what do these words mean?


Lumens are the most common measurement you'll see when shopping for LED Lighting. Lumens (lm) measure visible light from a lamp or light source. The higher the lumens the “brighter” the source will look.


The Lux meter is another unit used to measure the illuminance or amount of light falling on a surface. 1 Lux = 1 lumen per square meter. Lux is measured using the number of lumens in the bulb, taking into account the amount of visible light falling on the surface.

Foot Candles

A single-foot candle is the amount of light that falls on a surface one foot away from the single candle. Simply put, 1 foot candle is equivalent to a lumen / square foot, which means that a foot candle is equivalent to 10 lux.

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