Barn Light Sizes: A Comprehensive Guide

Sophia Jul 01, 2026

When it comes to lighting up your barn, one of the most crucial aspects to consider is the size of the light fixtures. The right barn light size can significantly enhance visibility, safety, and even the aesthetics of your space. But with numerous options available, choosing the perfect size can be a challenge.

a green wall light with a black arm and a white shade on it's side
a green wall light with a black arm and a white shade on it's side

To help you make an informed decision, we've compiled a comprehensive guide on barn light size, covering everything from understanding the different sizes to selecting the right one for your specific needs.

Academy 26" Angled Flynn Barn Light in Matte Black with 12.5" Green Tilted Bowers Shade
Academy 26" Angled Flynn Barn Light in Matte Black with 12.5" Green Tilted Bowers Shade

Understanding Barn Light Sizes

Barn lights, also known as warehouse lights or high bay lights, are typically measured in inches or centimeters, referring to the diameter of the fixture. They usually range from 6 to 24 inches, with each size catering to different coverage areas and lighting needs.

Barn Light Outdoor Wall Lantern - Antique Bronze / Small
Barn Light Outdoor Wall Lantern - Antique Bronze / Small

Before delving into the specific sizes, it's essential to understand that the size of the barn light is directly proportional to its light output and coverage area. Larger lights provide more light and cover a broader area, while smaller lights are ideal for more focused or localized lighting.

Small Barn Lights (6 to 12 inches)

an antique style wall light with a metal shade on the side and a white background
an antique style wall light with a metal shade on the side and a white background

Small barn lights, ranging from 6 to 12 inches, are perfect for areas that don't require extensive lighting, such as offices, workshops, or small storage rooms. They provide a focused beam of light, making them ideal for task lighting.

For instance, a 6-inch light fixture is suitable for illuminating a small workbench, while a 12-inch light can effectively light up a small office or a compact storage area.

Medium Barn Lights (14 to 18 inches)

Visual Comfort - Academy 15" Outdoor Larrabee Barn Light - Bowers Shade - Black
Visual Comfort - Academy 15" Outdoor Larrabee Barn Light - Bowers Shade - Black

Medium-sized barn lights, ranging from 14 to 18 inches, are versatile and can be used in various settings. They provide a good balance between light output and coverage area, making them suitable for larger workshops, garages, or even small barns.

A 14-inch light fixture can adequately light up a one-car garage, while an 18-inch light can effectively illuminate a two-car garage or a small barn.

Choosing the Right Barn Light Size

a brown wall light with an arm on the side, and a white back ground
a brown wall light with an arm on the side, and a white back ground

Now that you understand the different barn light sizes, let's discuss how to choose the right one for your specific needs.

When selecting a barn light size, consider the following factors:

Thomas O'Brien Academy Barn Light LED 22.25 inch Matte Black Arched Mack Barn Light in 12.5" Green Conical Savannah Shade
Thomas O'Brien Academy Barn Light LED 22.25 inch Matte Black Arched Mack Barn Light in 12.5" Green Conical Savannah Shade
Emblem 7" Gooseneck Wall Light in Barn Red
Emblem 7" Gooseneck Wall Light in Barn Red
One Light Outdoor Wall Lantern from the Barn Light collection in Black finish
One Light Outdoor Wall Lantern from the Barn Light collection in Black finish
Foundry Large 1-Light Museum Bronze Outdoor Gooseneck Wall Sconce
Foundry Large 1-Light Museum Bronze Outdoor Gooseneck Wall Sconce
Timeless Barn Lights for Outdoors: Find the Perfect Fit
Timeless Barn Lights for Outdoors: Find the Perfect Fit
Generation Lighting Barn Light 1 -Light 15-in H Satin Black Hardwired Dark Sky Outdoor Wall Light one_size | 8837401EN3-12
Generation Lighting Barn Light 1 -Light 15-in H Satin Black Hardwired Dark Sky Outdoor Wall Light one_size | 8837401EN3-12
1-Light Black Dusk to Dawn Outdoor Wall Sconce Barn Light - 12"W
1-Light Black Dusk to Dawn Outdoor Wall Sconce Barn Light - 12"W
TRUE FINE Grantham 1-Light 12 in. Black Dusk to Dawn Outdoor Barn Light Wall Sconce TD130011OT - The Home Depot
TRUE FINE Grantham 1-Light 12 in. Black Dusk to Dawn Outdoor Barn Light Wall Sconce TD130011OT - The Home Depot
Academy 26.5" Anchored Larrabee Barn Light in Matte Black with 16" Soft Copper Tilted Bowers Shade
Academy 26.5" Anchored Larrabee Barn Light in Matte Black with 16" Soft Copper Tilted Bowers Shade
Generation Lighting Barn Light 1 -Light 10.63-in H Antique Bronze Hardwired Dark Sky Outdoor Wall Light one_size | 8637401-71
Generation Lighting Barn Light 1 -Light 10.63-in H Antique Bronze Hardwired Dark Sky Outdoor Wall Light one_size | 8637401-71
Visual Comfort - Academy 17.5" Outdoor Mack Barn Light - Bowers Shade - Gold
Visual Comfort - Academy 17.5" Outdoor Mack Barn Light - Bowers Shade - Gold
17+ Stunning Pole Barn Exterior Lighting Ideas
17+ Stunning Pole Barn Exterior Lighting Ideas
Bechard Black Finish Dusk To Dawn Outdoor Wall Barn Light 18" H x 18" W x 28" D black
Bechard Black Finish Dusk To Dawn Outdoor Wall Barn Light 18" H x 18" W x 28" D black
VAXCEL Dorado 1 Light Dusk to Dawn Farmhouse Barn Dome Outdoor Wall Lantern, Dark Bronze and Light Gold, 12.25 inch
VAXCEL Dorado 1 Light Dusk to Dawn Farmhouse Barn Dome Outdoor Wall Lantern, Dark Bronze and Light Gold, 12.25 inch
Foundry Medium 1-Light Textured Black Outdoor Gooseneck Wall Sconce
Foundry Medium 1-Light Textured Black Outdoor Gooseneck Wall Sconce
Academy 26" Angled Flynn Barn Light in Matte Black with 12.5" Green Conical Savannah Shade
Academy 26" Angled Flynn Barn Light in Matte Black with 12.5" Green Conical Savannah Shade
Generation Lighting Barn Light 1 -Light 10.63-in H Antique Bronze Hardwired Dark Sky Outdoor Wall Light one_size | 8637401EN3-71
Generation Lighting Barn Light 1 -Light 10.63-in H Antique Bronze Hardwired Dark Sky Outdoor Wall Light one_size | 8637401EN3-71
Deep Bowl 12" Gooseneck Wall Light in Black
Deep Bowl 12" Gooseneck Wall Light in Black
Visual Comfort - Academy 17.5" Outdoor Mack Barn Light - Tilted Bowers Shade - Gold
Visual Comfort - Academy 17.5" Outdoor Mack Barn Light - Tilted Bowers Shade - Gold
  • Coverage Area: Measure the area you want to illuminate and choose a light size that can adequately cover it.
  • Light Output: Consider the light output or lumens of the fixture. Larger lights typically have higher lumens, but you should also consider the light distribution pattern to ensure even illumination.
  • Mounting Height: The mounting height of the light fixture can also affect its performance. As a general rule, the higher the mounting height, the larger the light fixture should be to ensure adequate light distribution.

Light Distribution Patterns

In addition to size, the light distribution pattern of a barn light is another crucial factor to consider. Different light fixtures have different distribution patterns, such as floodlights, spotlights, or wide floodlights.

Floodlights provide a broad, even distribution of light, making them ideal for large, open spaces. Spotlights, on the other hand, provide a focused beam of light, perfect for task lighting or highlighting specific areas. Wide floodlights provide a balance between the two, offering a good combination of broad coverage and focused light.

Mounting Height and Spacing

Mounting height and spacing are also critical factors to consider when choosing a barn light size. As a general rule, the higher the mounting height, the larger the light fixture should be to ensure adequate light distribution.

For example, if you're mounting a light fixture 20 feet above the ground, you'll need a larger light than if you were mounting it 10 feet above the ground. Similarly, the spacing between light fixtures is also crucial. The closer the fixtures are to each other, the smaller they can be, as they'll overlap and provide adequate light coverage.

In the end, choosing the right barn light size is all about understanding your specific needs and selecting a fixture that can effectively illuminate your space. By considering factors such as coverage area, light output, and mounting height, you can find the perfect barn light size for your requirements.