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Watts to Lumens Calculator — ChiefEngineer.in

Convert electrical power to luminous flux using luminous efficacy.

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Formula

Φv = P × ηv

Variables

  • P — power (W)
  • ηv — efficacy (lm/W)

Worked Example

Input: 10 W, 100 lm/W

Result: Φ = 1000 lm

Assumptions & Notes

Efficacy varies by source and operating conditions.

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