How Many LED High Bay Lights Do I Need For My Warehouse?

We all know the importance of light. Without it, we can’t deal with anything so its role in working areas is of vital significance as lighting can affect productivity and safety. If you’re looking to lighten up your workspace with great benefits, energy efficiency, and lighting consistency; then you must go for a product that is fulfilling all of your needs. Therefore, LED high bay lights are an optimal solution for all your lighting issues and requirements. Let’s have a look at what it entails. 

LED High Bay Light

As the name implies, LED high bay lights are the lights used to illuminate large indoor spaces. Most of the buildings like manufacturing facilities, warehouses, large departmental stores, industries, and more are usually vast and cover a lot of vertical as well as horizontal area. LED high bay lights are specifically designed to cover tall buildings and wide areas because; Types of work which are performed in these areas are of a wide pattern, but they all need a lighted environment for safe, accurate, and desired rate. They’re energy-efficient still very powerful and offer a strong illumination even over a larger area. The height range for these LED lights is 20-50 feet.

LED high bay lights to offer various benefits. First, they’ve four to forty time’s greater lifespan than normal conventional bulbs. So in this way, they have fewer maintenance requirements. They also offer better light quality in terms of Lumens when these are compared with halide light bulbs. Lastly, LED high bay lights not only generate light differently, it also distributes light differently, which helps it to decrease its energy consumption than normal light with the same output.

How Many LED Lights Do I Need For My Warehouse?

Suppose you are a wholesale crystal supplier and want to do an online wholesale crystals business similar to this website. Due to the great demand and wide variety of crystals, you may need to establish a crystal warehouse for faster delivery, so how should I choose lights for my warehouse? When installing LED lights for our warehouse, some people may confuse that how many LED lights do I need ? The number of led lights required is related to many factors, the most important of which is to consider the installation height, distance, and led light itself angle and lumen brightness. The following are our quick calculation rules:


10-15 feet high at 120 degrees require 14,000 lumens

14-20 feet high at 120 degrees require 21,000 lumens

20-30 feet high at 120 degrees require 35,000 lumens

Above 30 feet at 60, 90 or 120 degrees require 42,000+ lumens


The led high bay light space refers to the distance between light fixtures. It is responsible to dictate the optimal light level and lighting distribution. It is not something you have to struggle for, why? Because there is a general rule for light spacing: basically , the height of LEDs is referred to as the space between them. For instance:

Lights mounted at 20-ft are required to be 20-ft apart

Lights mounted at 35-ft are required to be 35-ft apart

All you need to do is to follow a general rule along with the results of high bay LED lights calculator and things will turn out as per your expectations.

For example:

First of all, you need to know what is the height of the roof ?and how large the area is?then you can calculate the number and power of LED high bay lights used in the factory area or warehouse.

Approximate estimation method

At 120 degree angle:

3-4 meters installation height, the lighting area is 50 square meter, require 30-50W LED lights

5-6 meters installation height, the lighting area is 70 square meter, require 70-100W LED lights

7-8 meters installation height, the lighting area is 90 square meter,  require 100-150W LED lights

9-10 meters installation height, the lighting area is 110 square meter, require 150-200W LED lights

11-15 meters installation height, the lighting area is 120 square meter, require 200-300W LED lights

At 60 degree angle:

5-8 meters installation height, the lighting area is 20 square meter, require 30-50W LED lights

10-12 meters installation height, the lighting area is 50 square, require 70-100W LED lights

12-15 meters installation height, the lighting area is 80 square, require 100-150W LED lights

15-20 meters installation height, the lighting area is 100 square, require 150-200W LED lights

20-30 meters installation height, the lighting area is 150 square, require 200-300W LED lights

Accurate calculation

illuminance (lux) = luminous flux (lumens lm)/area (square meter m2), that is, the average illuminance of 1 lux  is the luminous flux of 1 lumen (lm) irradiated on the area of 1 square meter (m2) brightness.

When using this formula to calculate the average illuminance on the floor surface of the room, in the case of the overall lighting fixture, you can use the following formula:

Average illuminance (Eav) = single luminaire luminous flux Φ × number of luminaires (N) × space utilization factor (CU )×maintenance factor (K)/floor area (length×width).

Formula description:

  • The luminous flux of a single light (Φ ) refers to the total luminous flux value
  • Space utilization factor (CU) refers to how much of the light beam emitted from the lighting fixture reaches the floor are or work area,Therefore,it is related to the light fixture design, installation height, room size and reflectivity of the lighting fixture.

For example, if the common LED panel is installed at about 3 meters height, its utilization factor CU can be between 0.6 and 0.75, while for hanging aluminum shades at a height of 6 to 10 meters, the utilization factor CU ranges from 0.7 to 0.45, when the downlight light are used, the utilization coefficient CU can be 0.4 to 0.55;

If like the bracket light are used at about 4 meters height, the utilization coefficient CU can be 0.3 to 0.5 .

The above data  only be used for rough estimation. If you want to accurately calculate the specific values, you need to consider more relevant parameters.

  • With the aging of the lighting fixture, the light output capacity of the light  will be decrease because of  the light source degrades or accumulation of dust in the room, and resulting in a decrease in illuminance,so we need to consider maintenance factor.

In general,in clean places, such as living rooms, bedrooms, offices, classrooms, reading rooms, hospitals, high-end brand stores, art galleries, museums, etc. The maintenance factor( K) is 0.8; while for general stores, supermarkets, business halls, etc. theaters, mechanical processing workshops, stations and other places is taken as 0.7; while other places with larger pollution index is taken as about 0.6.

 Here is a case:

  1. A mechanical processing workshop area with 58m length, 18m width, and 8m height,and 0.8m in staff working surface.
  2. The ceiling is mixed with cement-soil structure, and the walls are painted white.

When we using 250W metal halide light as lighting source. According to study, the 400Lx illuminance is right value for the workshop.


According to the above calculation formula: EAV=( Φ×N×CU×K)/(A×B)

  • The total luminous flux of the 250W single metal halide light source is: Φ= 18500;
  • CU = 0.65; K = 0.7   
  •  Substituting the above parameters into the formula:
  •  N = 49 (sets).
  • A factory area with 7200 square meters (length 90M, width 80M) height is 8M and the average illuminance is 300LX solution: According to the calculation formula:

EAV=( Φ×N×CU×K)/(A×B)


  • The total luminous flux of the 100W LED high bay light is: Φ=10000;
  •  CU = 0.65; K=0.7   
  • Substituting the above parameters into the formula:





LED High Bay Light Coverage Area

Coverage Area

The idea of using the LED high bay light is to make sure of good visibility around the working place because good light causes the workers feel better and active to work. Automatically it limits mishap cases and reduces the number of errors in that working area.

Therefore, it is essential to review the exact distance/spacing to place the light. You should have a clear scenario in your mind that why you need it and where you will use them. To understand the idea of the coverage area of these lights; there are few things you should keep in mind. The spacing of light; it mainly depends on the height at which it is being placed. For example; at around 15 feet height, about 12 feet spacing is essential for a bright light while if you need normal light, 15 feet spacing can be enough.

After this. When you’ve determined the exact spacing between the lights, the next step is to ensure how many lights you will need to illuminate the area properly. It mainly depends on the width of the available area. To wrap things up, you should also look for Lumens, not watts. Regardless of how many watts you pick, if there are insufficient Lumens, you won’t get better lighting. The light with 10000-15000 Lumens is perfect for the height of 10-15 feet. While for 25-35 feet, LED light with 33000 Lumens is the ideal one. Using the spacing and quality of brightness you need, you can easily create the layout to place your lights.

Proper lighting in any work area is one of the basic needs and it requires specific measurements. You need to keep an appropriate spacing pattern in the LED high bay light, estimate the number of lights you’ll need according to your required area, and keep in mind the functioning of Lumens. So, it’s not all about installing lights and just getting started. You need to understand all the little details as well.