Calculadora de Lúmenes por Watt
Calcula la eficiencia luminosa en lúmenes por watt. Compara fuentes de luz.
lumens
watts
Luminous Efficacy
80.0 lm/W
Annual Energy Cost (8hr/day)$4.38
Fórmula
Luminous Efficacy
Efficacy = Lumens / Watts
Higher efficacy means more light per unit of energy.
Efficacy Benchmarks
Ejemplo Resuelto
800 lumens from a 10 watt LED.
- 01Efficacy = 800 / 10 = 80 lm/W
- 02Annual cost at 8hr/day: 10W x 8 x 365 / 1000 x $0.15 = $4.38
Preguntas Frecuentes
What is a good lumens-per-watt ratio?
For modern LED bulbs, 80+ lm/W is good and 100+ lm/W is excellent. The theoretical maximum for white light is about 370 lm/W.
How does efficacy save money?
A more efficient bulb uses less electricity for the same brightness. Replacing a 60W incandescent (14 lm/W) with a 10W LED (80 lm/W) saves 50W and about $22/year running 8 hours daily.
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