How to convert candelas to lumens

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How to convert candelas to lumens
Light source (light on image by timur1970 from

A candela is the unit of measure for light produced from a given source, used to measure the output of high intensity LEDs. A lumen is the amount of light striking a given surface, commonly used when measuring the intensity of incandescent lights. While these are two different measurements, there is an approximate conversion between the two units.

Skill level:


  1. 1

    Multiply candelas by 12.57 to get the number of lumens.

  2. 2

    Divide the number of lumens by 12.57 to get the number of candelas.

  3. 3

    Convert millicandelas to lumens by multiplying the millicandelas by 0.01257. The millicandela, which is another common measurement, equals 1/1,000 of a candela.

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