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Lighting lumens calculator
How many lumens and bulbs a room needs.
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How this works
Lumens = room area × target footcandles. Common targets: living and bedrooms 10 to 20, dining 30 to 40, kitchens 30 to 40 general, offices about 50, bathrooms 70 to 80 at the mirror, hallways 5 to 10.
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