Knowledge Base:  
Lumens and "Watt" It Means
Last Updated: 01/27/2015
A lumen is a measure of how much light is visible to the human eye, while a watt is a measure of how much electricity is used per second.

A comparison of standard incandescent light bulbs:
  • 40 watt = 450 lumens
  • 60 watt = 800 lumens
  • 75 watt = 1,100 lumens
  • 100 watt = 1,600 lumens
Compact Fluorescent(CFL) and LED lights emit the same amount of lumens as incandescent light bulbs, but use only a fraction of the electricity. LED is the most energy efficient and Earth-friendly.


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