Watts to lumens calculator November 10, 2022 by atmiya25 Enter power in watts: W Enter light source: — select light source —Tungsten incandescent light bulbHalogen lampFluorescent lampLED lampMetal halide lampHigh pressure sodium vapor lampLow pressure sodium vapor lampMercury vapor lamp Or enter luminous efficacy in lumens per watt: lm/W Luminous flux result in lumens: lm See also Online Timer