Watts to lumens calculator

luminous efficacy in lumens per watt and press the Calculate button to get the luminous flux in lumens:

Enter power in watts:		W
Enter light source:	-- select light source -- Tungsten incandescent light bulb Halogen lamp Fluorescent lamp LED lamp Metal halide lamp High pressure sodium vapor lamp Low pressure sodium vapor lamp Mercury vapor lamp
Or enter luminous efficacy in lumens per watt:		lm/W
Luminous flux result in lumens:		lm