💡 Converters

Watt ↔ Lumen Converter

Convert electrical power (watts) to luminous flux (lumens) and back, using luminous efficacy in lm/W (default 80 for LED). Helps compare LED, fluorescent and incandescent bulbs.

Watt → Lúmen Lúmen → Watt

Valor (W ou lm) Eficácia (lm/W)

Resultado

—

Eficácia luminosa

A eficácia luminosa (lm/W) diz quantos lúmens uma lâmpada produz por watt consumido. LEDs ficam em torno de 80–120 lm/W, fluorescentes ~60 e incandescentes apenas ~15. Por isso um LED de 10 W (≈800 lm) substitui uma incandescente de 60 W.

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