Fluorescent Light Lux Calculation

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.

Fluorescent light lux calculation.

Watt and lux units represent different quantities so you can t convert watts to lux. Work out how many bulbs 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. Let s say you re planning the lighting for your kitchen including the kitchen counter.

Calculate the amount of lumens you need. The amount of light that is cast on a surface is called illuminance which is measured in lux this can be thought of as light intensity within a specific area. For the whole kitchen it is 108 lux and for the counter detailed tasks 538 lux. Multiply the area in square meters by the lux or the area in square feet by the footcandles.

Using the foot candle calculator. Footcandle fc is the amount of light flux density. 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. Choose the area of the house that you want to illuminate.

Use the light table to find out how many lux or footcandles you need. It is the unit of measure used when describing the amount of light in a room and is expressed in lumens per square foot. Watts to lux calculation with area in square feet watts to lux calculation with area in square meters.