Lumens to watts calculator

Lumens to watts calculator

We are offering Luminous flux in lumens (lm) to the electric power in watts (W) calculator, to help you making your calculation easy, check now! You can simply enter the luminous flux in lumens, and the luminous efficacy in lumens per watt and hit the button to get the power in watts.

Enter luminous flux in lumens: lm
Enter light source:
Or enter luminous efficacy in lumens per watt: lm/W
Power result in watts: W

* the values of predefined luminous efficacy are the average values.

Formula for Lumens to watts calculation

The formula used for energy saving lamps have the high luminous efficacy (which are more lumens per watt). The power P calculated in watts (W) is apparently equal to the luminous flux ΦV in lumens (lm), which is divided by the luminous efficacy η measured in lumens per watt (lm/W).

P(W) = ΦV(lm) / η(lm/W)

Lumens to watts table

We are presenting here Lumens to watts table to help you in making easy calculations, check now!

Lumens Fluorescent
light bulb
375 lm 6.23 W 25 W
600 lm 10 W 40 W
900 lm 15 W 60 W
1125 lm 18.75 W 75 W
1500 lm 25 W 100 W
2250 lm 37.5 W 150 W
3000 lm 50 W 200 W

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