How to Calculate How Many Lights You Need for Your Home

Step 1: Understand the Structural Features of Your Home
First, you need to know the characteristics of your home’s structure, which will help you choose the appropriate type of lights.

The structural features here mainly refer to the size and height of your home. If your house is large and has a height exceeding 12 feet, it would be more suitable to use higher-wattage high bay lights. Conversely, for lower ceilings, using lower-wattage lights is recommended to avoid straining your eyes.

There is an article specifically discussing the differences between high bay lights and low bay lights.

Step 2: Consider the Purpose of Each Room
Next, determine the purpose of each room to figure out how much brightness you need, which is measured in foot-candles (FC).

The required foot-candle (FC) levels for each type of use can be directly viewed in this article.

Step 3: Calculate Your Home's Area
Then, calculate the area of your home. You can use the following formula to determine the exact number of lights needed for your space.

You can also directly input your home parameters into this calculator, which will give you the results immediately.