The general rule is task lighting should be 3 times brighter than your ambient source to avoid eye strain. If you don’t currently have recessed lighting, you may want to create your ambient light source by adding pendant lights or a floor lamp that casts light onto the ceiling.

How do you determine how many can lights you need in a room?

Formula: total sq. footage x 1.5 = total wattage needed. Total wattage divided by 60 watts (or whichever wattage you select) = total amount of recessed can lights. Example: 240 square foot room x 1.5 = 360 divided by 60 (the bulb wattage I’d like to use) = 6 recessed lights needed.

How many can lights do I need in a bedroom?





For example, for a 6-inch light, typically, the number is 1.5, which should be multiplied by the ceiling height. So, if your ceiling is 8 feet tall, multiplied by 1.5, the maximum space between each light should be 12 feet.

How many watts of light do I need for my room?

The Formula for Lighting a Room

So if you have an 18′ long room x 12′ wide room multiply times 1.5 = 324 watts, that’s how much wattage is needed to adequately light the room. You can divide that lighting into more than one source.

How many LED ceiling lights do I need?

A common rule of thumb is one recessed light for every 4 to 6 feet of ceiling space. Typically, fixtures should be placed 24 inches from a wall or cabinet with 2 to 5 feet of space between them.

How many can lights in a 20×20 room?





If you have a center light fixture, you should be able to use 4 inch line voltage cans or low voltage for supplemental lighting. I would go with at least 8 three inch cans for a 20 foot room.

How many feet of LED lights do I need for my room?

To determine the needed lumens, you will need to multiply your room square footage by your room foot-candle requirement. For example, a 100 square foot living room, which needs 10-20 foot-candles, will need 1,000-2,000 lumens. A 100 square foot dining room, which needs 30-40 foot-candles, will need 3,000-4,000 lumens.

Can you have too many recessed lights?

It often seems that installing recessed lights is a cure all, but they cannot properly wash light upon walls and all dark corners, which would bounce reflective light into the room. In fact, using too many recessed light may leave areas of your room dark and may even cost you more on your electric bill.

How many recessed lights do I need in my living room?

Whatever new recessed lighting you add should work with your existing fixtures. Measure your room to see how many fixtures you will need. A common rule of thumb is that you use one recessed light for every 4 to 6 square feet of ceiling space. Doing so provides even, overall illumination.

How many Christmas lights do I need?



How many strands do I need? A good rule of thumb is 100 lights for every 1.5 feet of tree. However, if you love lights, you may want to double, or even triple, that amount. Use the chart below for the recommended number of lights for fresh-cut trees.

How many lights do I need?

Lumens calculation summary

Multiply your room square footage by the footcandle requirement. For example, a 100-square foot living room, which needs 20 footcandles, will need 2,000 lumens. A 100-square foot dining room, which needs 40 footcandles, will need 4,000 lumens 2 (see PDF and complete footcandle index).

How many Christmas lights do I need for a 6 foot tree?



How many lights do I need? For the best coverage on your unlit Christmas tree, about 100 bulbs are recommended for every two feet of tree. If you have a 6 foot artificial Christmas tree, you’ll need a string of 300 LEDs to light up your tree perfectly.