Lumens per watt is a measurement that dictates how much light is produced for each watt of electricity used. The more lumens per watt, the more light is produced without adding extra expense or electricity usage. This me... More »

The average light-emitting diode bulb outputs 83 lumens per watt, as of 2014. They also last 30 times longer than a comparable incandescent lamp. Rapid advancements in LED lighting technology led the U.S. Energy Informat... More »

To convert watts to lumens, first find out the efficacy rating, which is in lumens per watt. The formula for this conversion is lumens = watts x (lumens per watt). More »

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Convert lumens to watts with the following formula: Watts = Lumens / (Lumens per Watt), or W = lm / (lm/W). The number of lumens per watt is dependent on the type of light and the manufacturer. Incandescent light bulbs a... More »