#### Lumens to Watts :

Lumens to Watts
 Enter Luminous Flux in Lumens : lm Select Light Source : Select Tungsten Incandescent Light 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 Power Result in Watts : W
##### Lumens :
• The lumen is the unit of luminous flux, a measure of the total quantity of visible light emitted by a source per unit of time, in the International System of Units.
• Then, the symbol of lumens is lm.
##### Watts :
• The watt is a unit of power or radiant flux.In the International System of Units and then it is defined as a derived unit of 1 kg·m²·s³ or, equivalently, 1 joule per second.
• It is used to quantify the rate of energy transfer.
• Then, the symbol fo watts is W.
##### Lumens to Watts :
• Lumen is the term used to describe the total amount of light emitted by a light source, while wattage merely indicates the amount of energy it uses.
• As lighting becomes more and more energy-efficient, the same number of lumens is being achieved with lower and lower wattages.
##### Formula :
• The formula used to calculate the following calculator lumens to watts is given below.
• Whether, Select the light source or Enter luminous efficacy in lumens per watt.
• Then, the calculation formula = Luminous flux in Lumens / Luminous efficacy in lumens per watt.
• Besides the formula this calculator works.
##### How to Calculate ?
• First, Enter the Luminous flux in lumens.
• Second, Select the light source or Enter Luminous efficacy in lumens per watt.
• Click “Calculate” to get the result and then if you want to clear values Click “Reset” in addition to clear the values.
• Finally, follow these steps to get the results.
• Then you will get as a Power result in watts.