List of the required lumens per sq foot based on the room type.
Lumens per square foot laundry room.
When lighting a room you light it by suggested lumens per square foot.
To figure out the lumens needed based on this figure you would take the total lumens of the lamp you are considering using and divide it by the total square foot.
Living room 15 lumenskitchen general 35 lumenskitchen task 75 lumensdining room 35 lumensbedroom 15 lumenshallway 10 lumensbathroom 75 lumens notice the task orientated spaces will have a higher lumen requirement like in the kitchen and bathroom.
For the average space of 250 square feet you ll need roughly 5 000 lumens as your primary light source 20 lumens x 250 square feet.
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Here s an example using a 100 square foot living room.
70 80 lumens per square foot.
But with an energy efficient led bulb.
Watts are no longer used as the standard measure of light bulb brightness because watts actually indicate electricity usage not light.
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 your room square footage by your foot candle requirement.
So using the figure above as an example you would be lighting for 120 feet based on 12x10 room.
In the old days when most light bulbs were incandescent a 100 watt bulb indicated a certain level of brightness.
Knowing how many lamps you need to adequately illuminate a room or space can be tricky.