Lumens Required Per Room Type

For example for a 120 square foot room with a single overhead fixture with two light bulbs each producing 800 lumens.

Lumens required per room type.

E φ l c u l lf a l 2 where. φ l luminance per lamp lumen. E illumination lux lumen m 2. Please choose proper unit of your room area to help us count led lights lux and watts calculation required per square foot meter inch.

C u coefficient of utilization. Commercial spaces like retail stores can utilize many of the same light types but they may not require the same number. For example a 100 square foot living room which needs 10 20 foot candles will need 1 000 2 000 lumens. 10 incandescent lamps of 500 w 10600 lumens per lamp are used in an area of 50 m 2.

To determine the needed lumens you will need to multiply your room square footage by your room foot candle requirement. To determine the needed lumens you will need to multiply your room square footage by your room foot candle requirement. Then choose the type of a light bulb you want to use. The total lumens lighting required are equal to 1 800 square feet times 30 foot candles per square foot or 54 000 lumens.

Determine the needed lumens a lumen is a unit measurement of light. If you re curious to know how much light a room is getting simply add up the lumens of all the light bulbs in the room and then divide by the room s square footage to find the lumens per square foot. Multiply the square footage by the desired lighting intensity in foot candles per square foot. In addition to the size of the space a variety of factors such as the activities being conducted and wall reflectance can also play a role.

Multiply the required illumination level by the area to figure out how many lumens you need. This lumen calculation formula is using predefined standard lux levels required for different room types. Suppose your shop has a total square footage of 1 800 square feet and you want a lighting level of 30 lumens per square foot. Let s assume you re using a standard bulb that emits 800 lumens for the kitchen and small led lights that emit 200 lumens each above.

L 108 10 1080 lumens. L lf light loss factor. Result may defer according to spacing layout of led lights and position from wall. Industrial spaces often require more lumens per square foot because of the complicated potentially dangerous nature of work being performed.

Knowing how many lamps you need to adequately illuminate a room or space can be tricky. For example a 100 square foot living room which needs 10 20 foot candles. A l area per lamp m 2. L 538 2 4 1291 lumens.

Our room example is a living room which requires 15 lumens per square foot.