How do you calculate lumens per square foot?

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 lumens do I 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.

How do I calculate lumens 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 lumens do I need for a 20x20 room?

So, let's say it is a 20 x 20 ft room, giving us 400 sq ft. And let's say you have a six-light pendant using 9W LED bulbs that put out 840 lumens each. 840 x 6 = 5,040 lumens. Dividing the lumens by the square footage, you find you're getting about 13 lumens-per-square-foot (5,040 ÷ 400 = 12.6).

How many square feet will 5000 lumens cover?

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).

Lumens Per square Foot

How many lumens do I need for a 20 foot ceiling?

Level of Brightness (Lumen)

It is also important to understand the level of brightness required for the specific space. For example, a 12 to 14-foot ceiling will need a light bulb of 1000 lumens or more. Higher ceilings of 20 feet or more will need a higher commercial grade light bulb of about 2000 lumens or more.

How do I calculate lumens lighting for a shop?

Start by measuring your space and multiply the length by the width to get your square footage. Then multiply your square footage by 70 to get the minimum lumen requirement for your workshop. For example, my shop is 12' x 16' = 192 square feet. I would require a minimum of 192 x 70 = 13,440 lumens.

How many lumens do I need for a 1200 square foot garage?

A general rule of thumb is to use 130 to 150 lumens per square foot of work space.

How many watts of light do I need per square foot?

An average LED lighting system draws about 32 watts to serve 1 square foot of grow space. The wattage in a grow room could be amplified up to a maximum of 50 watts per square foot. Going beyond that amount would create a too strong indoor plant light intensity, which could stunt the growth of your plants.

How many lights do I need for a 24x24 garage?

For a 24'x24′ 2-car garage (576 square feet), a total of 46,000-57,600 lumens are recommended. Having the proper lighting is very important, especially if you're using your garage as a shop — fixing cars, woodworking, or any type of fun tinkering.

How do you calculate the amount of light needed in a room?

To estimate the number of lumens your space will need, just multiply the square footage of your room by the number of foot-candles required for the space. For example, for a bathroom that is 64 square feet with a foot-candles range of 70-80, you'll need from 70x64 to 80x64 lumens, or 4480 – 5120 lumens.

How many can lights for a 12x12 room?

How Many Can Lights For A 12×12 Room? The typical rule-of-thumb is 24″ from each wall, and then 3-5 feet between cans. So in a 12′ room you'd probably want two rows of lights. Considering it is a bedroom and you don't need it as bright as a kitchen, you can probably get away with 2 rows of 4 lights for a total of 8.

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.

Is 3000 lumens too bright?

3000 lumens is a good level of light for LED, CFL or incandescent lighting. It's suitable for recessed lighting, downlighting, up lighting and within pendants.

How many lumens do I need outdoor?

The best range of lumens for outdoor lighting is 12 to 1,300 lumens. How many lumens you need for outdoor landscape lighting is between 50 and 700. The amount of brightness most people want changes based on location.

How many lumens do I need for a garage?

Measure your garage to determine your true light output needs. The Illuminating Engineering Society (IES) Lighting Handbook recommends 50 lumens (a measure of light output) per square foot in residential garages and 300 lumens per square foot in workshop areas.

How do you calculate watts per square foot?

Divide the wattage consumed in the room by its area in square feet to calculate watts per square foot. In our example, 650 watts divided by 192.89 square feet is 3.37 watts per square feet.

How many lumens do I need for a 20x30 garage?

The Illuminating Engineering Society (IES) guidelines recommend a minimum of 50 lumens per square foot of space. The average one-car garage needs a minimum of 13,200 lumens, while a two-car garage requires a minimum of 20,000 lumens.

How many lumens do I need for a 750 square foot garage?

For a residential garage, it's recommended you have 50 lumens per square foot of space.

How bright is 4500 lumens?

Dark Sky-Friendly Lights

Choose lamps that have a total visible light output of 4500 lumens or less. This is equivalent to about four 60-watt (or one 250 watt) incandescent bulbs. That's a lot of light at night.

How many lumens does a retail store need?

For every square foot, assign a set number of lumens. For example, to provide ambient lighting, a square foot at floor-level needs 20 lumens. A table or raised surface might need 30 lumens. A workspace or a retail space cold probably use between 50 and 70 lumens per square foot.

How many lumens is the sun?

Direct sunlight has a luminous efficacy of about 93 lumens per watt of radiant flux. Multiplying the figure of 1050 watts per square meter by 93 lumens per watt indicates that bright sunlight provides an illuminance of approximately 98 000 lux (lumens per square meter) on a perpendicular surface at sea level.

Is 5000K too bright for bathroom?

A 5000K LED bulb produces a bright daylight kind of color. So, it's good for bathrooms, basements area and your study room. You can even use it in the kitchen when you work.