QA

How Many Lights Per Square Foot

How do you calculate lighting per square foot?

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.

How many lights do I need for my room calculator?

Multiply width of room x length of room x 1.5 = amount of total minimum wattage needed (assuming an eight foot ceiling). Divide by 60 to get the number of 60-watt equivalent bulbs required. Then, add up the wattage in each bulb in each fixture to figure out how many light fixtures are needed.

How many lumens do you need per square foot?

As a handy rule of thumb, a sitting room or bedroom will generally require around 10-20 lumens per square foot, while a bathroom or kitchen will need a stronger level of lighting, at around 70-80 lumens per square foot. To work out the lumens you need, simply multiply the square footage of the room by this figure.

How do you calculate how many LED lights do I need?

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.

How do I calculate LED lights for a 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.

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 do I calculate how many ceiling lights I need?

A good general rule for placement is to divide the height of the ceiling by two. The result is the amount of space to leave between each light. For example, recessed lighting spacing for an 8-foot-high ceiling would be 4 feet between each light. This will provide good spacing for general room lighting.

How many LED recessed lights per room?

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.

How many watts do you need per square foot?

In the case of modern homes having higher ceilings than 8 feet, the rule of thumb for the calculation is 1.25 watts per cubic foot. Taking into account the previous example, a 9-foot ceiling height would obtain 400 sq. ft x 9 x 1.25 = 4500 watts. The number of watts = area x height x 1.25.

Is 6000 lumens a lot?

Similar to a dining room, your at-home office should have a brightness level of 3,000 to 6,000 lumens.

Is 3000 lumens too bright?

In other words, 3,000 lumens is meant to give a room a brighter light. This is not ideal if you have a small room and it’s a bedroom. You don’t want to blind your eyes when you’re about to go to bed. On the other hand, 2,000 lumens is ideal if you wish to light up a 200 square-foot living room.

What does 600 lumens mean?

Lumens measure how much light you are getting from a bulb. More lumens means it’s a brighter light; fewer lumens means it’s a dimmer light.

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

For a basic look our number one rule is at least 100 bulbs per 1ft of tree – so that would mean a 6ft tree needs a minimum of 600 LEDs. For a fuller look, you can add as many lights as you want but we recommend upwards of 700 for a 6ft tree.

How do you calculate lighting for an area?

Lighting Calculation – Summary Multiply the area in square meters by the lux, or the area in square feet by the footcandles. Work out how many bulbs you need. Divide the number of lumens by the number of lumens delivered by each bulb.

How far apart do you put LED downlights?

As a rule of thumb, we suggest you divide your ceiling height by 2 to give you the space required between each downlight. For example if your ceiling is 8 foot high, then position your lights 4 feet apart.

How long should LED lights be for a room?

How Long Should LED Lights Be for a Room? If you’re adding LED strip lights or string lights, you can look for a standard 16 foot roll or a strip light that can be connected together to make a longer run. Most standard sized bedrooms are around 12 feet by 12 feet or even smaller.

How many light bulbs do I need for a room?

Therefore, your room needs a light fixture with a minimum of five lightbulbs or a total of roughly 288 watts (including other lighting sources in the room).

How much area do LED lights cover?

The average LED grow light draws about 32 watts to cover 1 sq ft for flowering. Compare this to a typical HID fixture which rings in at 40 watts per square foot (assuming a 5′ x 5′ area, or 25 sq ft coverage area). Using an HID in a 4′ x 4′ will bring the power coverage up to 62.5 watts per sq ft.