Lighting Calculator
If you’re not a fan of dealing with lighting computations and are feeling a bit lost, don’t worry – we’ve got your back! Our handy calculator estimates the exact amount of light for every room in your home and calculates how many lighting fixtures you will need.
How many lumens per square foot / meter do I need?
1st step : Choose the type of area and activity that you want to illuminate.
Simply select one of the options from the list, and our lighting calculator will automatically determine the optimal level of illumination in lux or foot-candles (that is, how much light should be incident on the surface). Intuitively, ambient light in the bedroom shouldn’t affect our preparations for sleep time and won’t be as intensive as the light required for sewing.
2nd step : Define the illuminated area.
In the case of a bedroom or a bathroom, it will simply be the room’s total area. If you’re trying to figure out LED lighting for your kitchen counter, the illuminated area will be calculated as the length of the counter multiplied by its width.
Once you know all these values, the calculator will determine how many lumens you need in total .
We use the equation: lumens = lux x area
You can use illumination units of lux or foot candles.
If you want to recalculate between these units, remember that one foot-candle equals to 10.764 lux.
Also, check out our lumens to watts calculator if you’re curious about how many lumens various light bulbs produce under a given wattage.
Convert between different units of light with the lumen calculator.
3rd Step: Lighting calculation formula
Now that you know how many need, you can calculate how many light bulbs or fixture you will know by simply dividing Lumens with the quantity of lumens each bulb or fixture emits.
You can use the formula no of bulbs = total lumens required / lumens per bulb or fixture
