Fluorescent Light Lux Calculation

Work out how many bulbs you need.

Fluorescent light lux calculation.

Let s say you re planning the lighting for your kitchen including the kitchen counter. Multiply the area in square meters by the lux or the area in square feet by the footcandles. It is the unit of measure used when describing the amount of light in a room and is expressed in lumens per square foot. Footlambert fl is defined as the luminance of a surface reflecting transmitting or emitting one lumen lm of illumination per square foot of area in the direction being viewed or the conventional unit of brightness.

For the whole kitchen it is 108 lux and for the counter detailed tasks 538 lux. Choose the area of the house that you want to illuminate. Check the optimal lighting level. Calculate the amount of lumens you need.

Watts to lux calculation with area in square feet the illuminance ev in lux lx is equal to 10 76391 times the power p in watts w times the luminous efficacy η in lumens per watt lm w divided by the surface area a in square feet ft 2. You can calculate lux from watts luminous efficacy and surface area. Footcandle fc is the amount of light flux density. Use the light table to find out how many lux or footcandles you need.

Watt and lux units represent different quantities so you can t convert watts to lux. The total output of visible light from a light source is measured in lumens typically the more lumens a light fixture provides the brighter it is. Ev lx 10 76391 p w η lm w a ft 2 watts to lux calculation with area in square meters.