Multiply the required illumination level by the area to figure out how many lumens you need.
Luminaire lumens per circuit watt calculation.
Depending on context the power can be either the radiant flux of the source s output or it can be the total power electric power chemical energy or others consumed by the source.
It is the ratio of luminous flux to power measured in lumens per watt in the international system of units si.
Luminous flux in lumens lm to electric power in watts w calculator.
The predefined luminous efficacy values are typical average values.
A cfl bulb consumes even less energy only 26 w so its efficiency is 61 lumens per watt.
Enter the luminous flux in lumens luminous efficacy in lumens per watt and press the calculate button to get the power in watts.
A halogen bulb on the other hand consumes only 72 watts for the same amount of brightness making its efficiency 1 600 72 22 lumens per watt.
L 108 10 1080 lumens l 538 2 4 1291 lumens then choose the type of a light bulb you want to use.
Watts to lumens calculator electric power in watts w to luminous flux in lumens lm calculator and how to calculate.
The predefined luminous efficacy values are typical average values.
Enter the power in watts luminous efficacy in lumens per watt and press the calculate button to get the luminous flux in lumens.