## Lux to Watts :

Lux to Watts
 Enter Illuminance in Lux : lx 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 Enter Spherical Radius : ft m Or Enter Surface Area : ft² m² Power Result in Watts : W
##### Lux :
• Light or visible light is electromagnetic radiation that can be perceived by the human eye.
• Visible light is usually defined as having wavelengths in the range of 400–700 nanometres, corresponding to frequencies of 750–420 terahertz, between the infrared and the ultraviolet.
• Then, the symbol of lux is lx.
##### 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.
##### Lux to Watts :
• Watt and lux units represent different physical quantities, so you can’t convert them directly.
• Our application calculates and converts watts to lux to show how power affects the light efficiency on a given surface.
• A higher number of lux makes the source more efficient in spreading (the surface is brighter), and a lower one means that your surface is darker, dimmer.
##### Formula :
• The formula used to calculate the following calculator lux to watts is given below.
• The calculation formula,
• So, Feet = ( Illuminance in lux * Surface area / Luminous efficacy in lumens per watt ) * 0.09290304.
• Then, Meter = ( Illuminance in lux * Surface area / Luminous efficacy in lumens per watt ).
• Besides the formula this calculator works.
##### How to Calculate ?
• First, Enter Illuminance in lux.
• Second, Either select light source or enter Luminous efficacy in lumens per watt.
• Third, Select  Feet or Meter.
• Fourth, Either enter spherical radius or enter surface area.
• 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.