How Many High Bay Lights Do You Need?: 1 Minute to Calculate Your Lighting NeedsSarah ThompsonMay 25, 2025Table of ContentsUnderstanding Your Space Requirements:Calculating Lumens Needed:Determining Number of Fixtures:Additional Considerations for Optimal LightingChoosing the Right FixturesFAQTable of ContentsUnderstanding Your Space RequirementsCalculating Lumens NeededDetermining Number of FixturesAdditional Considerations for Optimal LightingChoosing the Right FixturesFAQFree Smart Home PlannerAI-Powered smart home design software 2025Home Design for FreeWhen it comes to illuminating large spaces, determining how many high bay lights you need is crucial for optimal visibility and safety. High bay lights are ideal for warehouses, gymnasiums, and factories where the ceiling height is typically over 15 feet. To accurately calculate the number of high bay lights required, you need to consider factors such as the size of the space, the desired brightness (measured in lumens), and the mounting height of the fixtures. Understanding Your Space Requirements: First, measure the dimensions of your space. Calculate the square footage by multiplying the length by the width. For example, if your warehouse is 100 feet long and 50 feet wide, the total area is 5000 sq ft. Next, consider the recommended lumens per square foot for your application. Warehouses typically require between 20-50 lumens per square foot, depending on the activities performed in that space. Calculating Lumens Needed: To find out the total lumens required, multiply the square footage by the lumens per square foot. Using our example, if you aim for 30 lumens per sq ft, then 5000 sq ft x 30 lumens = 150,000 total lumens needed for the space. Determining Number of Fixtures: Next, know the lumen output of each high bay light you plan to use. Most high bay LEDs output between 15,000 to 30,000 lumens. If you choose a fixture that provides 20,000 lumens, divide the total lumens needed by the output of each fixture: 150,000 lumens ÷ 20,000 lumens = 7.5. Since you can’t have half a fixture, you would round up to 8 high bay lights required to adequately light the space. Additional Considerations for Optimal Lighting Besides the basic calculations, consider the layout of your lighting fixtures. It's essential to ensure an even distribution of light across the space to prevent dark spots. You may also want to factor in the height at which the fixtures will be mounted, as this can affect the spread and intensity of the light. A higher mounting height may require more powerful fixtures or a different lighting arrangement. Choosing the Right Fixtures Choosing the right type of high bay light is also vital. LED fixtures are often the preferred choice due to their energy efficiency, longevity, and lower heat output. Some lights also come with adjustable wattage settings which allows for greater flexibility and better control over the lighting in your space. FAQ Q: What types of high bay lights are best for my space?A: The best types typically include LED high bay lights due to their energy efficiency and long lifespan. Consider industrial-grade fixtures for warehouses and dimmable options for gymnasiums. Q: Can I use fewer lights if I increase the wattage?A: It's essential to maintain adequate illumination levels. Increasing wattage can lead to brighter light, but ensure it meets the recommended lumens per square foot for safety and comfort.Home Design for FreePlease check with customer service before testing new feature.