Lumen-method screening
Room Lux, Lumens & LED Quantity Calculator
Estimate required lumens, lamp quantity, connected lighting load and annual energy cost from room size and entered design factors.
Your result
Enter measured or nameplate values to calculate.
- Required source lumens
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- Lamp quantity
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- Estimated average illuminance
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- Connected lighting load
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- Annual electricity cost
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Method
Average illuminance uses the lumen method: source lumens × utilisation factor × maintenance factor ÷ floor area. Lamp count rounds upward.
Important limits
Screening only. Target lux, glare, uniformity, colour rendering, beam pattern, mounting height, daylight and task-plane design require a lighting professional.