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.
Luminaire lumens per circuit watt calculation.
Enter the power in watts luminous efficacy in lumens per watt and press the calculate button to get the luminous flux in lumens.
Watts to lumens calculator electric power in watts w to luminous flux in lumens lm calculator and how to calculate.
To comply in new dwellings l1a 75 so 3 in every 4 of the fixed internal light fittings need to have a minimum of 45 lamp 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.
L 108 10 1080 lumens l 538 2 4 1291 lumens then choose the type of a light bulb you want to use.
A cfl bulb consumes even less energy only 26 w so its efficiency is 61 lumens per watt.
Multiply the required illumination level by the area to figure out how many lumens you need.
They also need to an output greater than 400 lamp lumens to count.
Watts to lumens calculator.
The predefined luminous efficacy values are typical average values.
Luminous flux in lumens lm to electric power in watts w calculator.