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Footprintz LED tools

Lumen Calculator

Estimate required room lumens, lighting power, and fixture quantity from room size, target lux, and luminaire efficacy.

Room area
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Required total lumens
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Estimated lighting power
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Estimated fixtures
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Required lumens = room area × target lux ÷ maintenance factor. This is an early planning estimate, not a photometric design; mounting height, room reflectance, beam angle, shadows, and utilization also affect results.