Lux measures light arriving on a surface, not the output of the lamp itself: the same light gives fewer lux the further the surface is from it.
Convert lux to foot-candles and phots — for office, retail, warehouse and photography lighting levels and building lighting standards.
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Convert lux to foot-candles and phots — for office, retail, warehouse and photography lighting levels and building lighting standards.
A bright office lit to 500 lux measures about 46.5 foot-candles on a US lighting plan.
Result = input × source-unit factor ÷ destination-unit factor. All factors are relative to the same base unit; intermediate values are not rounded.
Lux, Foot-candles, Phot. Read the labels carefully: regional or decimal/binary variants are separate choices.
Roughly 100,000 lux in direct sun, 1,000 to 10,000 on an overcast day, and 300 to 500 in a typical office. Living rooms usually sit between 50 and 300 lux.
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