Lumens to Watts Converter – Estimate Lighting Power
Convert lumens to watts to estimate the power consumption of light sources based on their luminous efficacy. This tool is perfect for lighting designers, energy consultants, and anyone
This diagram illustrates how a light source with 1000 lumens of luminous flux consumes 10 watts of power, given a luminous efficacy of 100 lm/W. The yellow circle represents the relative brightness of the light source. Need a Custom Calculator?
Lumens per Watt (lm/W) depends on bulb type. For example, 800 lumens to watts for an LED (100 lm/W) = 8 watts. Here's a quick guide using LED bulbs at 100 lm/W: Also see: Lighting Converters Found this tool helpful? Share Mainconverter with your friends! Quickly convert lumens to watts with our free Lumens to Watts Calculator.
More lumens mean a brighter light. For example, pathway lights typically need 50-200 lumens, while solar street lights may require 2000-10,000 lumens depending on the application. When you think of solar lights, the first number that might catch your eye is “watts.”
Watts to lumens calculator ► Energy saving lamps have high luminous efficacy (more lumens per watt). The power P in watts (W) is equal to the luminous flux ΦV in lumens (lm), divided by the luminous efficacy η in lumens per watt (lm/W):
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