LED Beam Angle Calculator
See exactly how wide your light spreads before you install it. Slide the angle, set your ceiling height, and watch the beam update in real time, or switch to the reverse calculator if you already know the area you need to cover. Browse our LED spotlight collection for fixtures with specified beam angles.
Calculate Your Beam Spread
Two modes: find the beam diameter from an angle, or find the right angle for your target area.
Beam Spread Visualization
Spot vs Flood: What 60° Really Looks Like
Three common beam angles, same 8-foot ceiling. The light pool on the floor tells the whole story.
Which Beam Angle for Which Space?
Practical advice from lighting designers who've installed thousands of fixtures.
Kitchen: Two Angles, Not One
Most kitchens end up with the same 60° recessed can everywhere. That's why your countertops look the same as your walkways. The fix: swap the two lights directly above your prep area for 25-40° narrow floods. You get focused pools where you actually chop and read recipes, while the ambient cans handle everything else.
The contrast makes the kitchen feel bigger and more layered. For pendant lights over an island, 30-40° beams create defined light pools on the countertop without spilling too much into adjacent areas. Browse pendant fixtures for kitchen islands.
Retail: Narrow Beams Sell More
Walk into any premium retail store and you'll notice the products are bright and the aisles are dimmer. That's not an accident. It's 15-25° narrow beams aimed at display tables, with 60° floods filling the walkways at lower intensity. Narrow beams create a visual hierarchy that guides customers to what you want them to see.
If your store uses uniform 90° flood lighting, everything looks the same and nothing stands out. For jewelry and fine merchandise, 10-15° very narrow spots create sparkle and drama. For clothing racks, 25-40° beams at 8-10 foot heights provide even coverage across the display. Explore commercial track lighting with adjustable beam angles.
Outdoors: Drama vs Safety
Outdoor lighting uses beam angles to create two completely different effects. Narrow 15-25° beams uplight trees and architectural columns for drama. The tight beam pushes light high without spilling sideways. Wider 60-90° beams handle pathway and patio lighting where safety matters more than atmosphere.
For facade grazing on textured stone or brick, 25-40° beams placed 6-12 inches from the wall create shadows that reveal texture. For large area illumination like driveways, 90-120° floodlights cover the most ground. Always verify IP65 or higher rating for outdoor fixtures.
Hallways: Avoid the Spotlight Effect
Hallways need even, glare-free lighting, not a runway of bright spots. Use 40-60° beam angles for recessed downlights spaced 4-6 feet apart. The wider beams overlap to eliminate dark gaps between fixtures while keeping brightness consistent.
If you can see distinct circles of light on your hallway floor, your beams are too narrow. Bump up to 60° or space the fixtures closer together. For corridors with 9-foot ceilings, 60° beams at 5-foot spacing produce uniform 10-15 foot-candle illumination. In wider corridors, offset alternating fixtures for a more dynamic pattern.
Wall sconces with 120° wide flood beams supplement downlights for ambient wall illumination. For more on spacing calculations, see our Lighting Layout Calculator.
Three Ways to Get It Wrong
The most common beam angle mistakes we see, and how to fix them.
Too Narrow
Using 15° spots for general lighting turns your ceiling into a cluster of flashlights. You get bright circles on the floor with dark gaps between them. It works in museums and jewelry cases, not in living rooms.
Just Right
60° ambient lights with 30% overlap create even coverage with no dark spots. Add 25-40° accents for task zones and artwork. The room feels layered, bright where you work, soft where you relax.
Too Wide
120° wide floods everywhere might feel safe, but the result is a flat, washed-out room with no depth. Shadows disappear, textures vanish, and the space feels like a parking garage. Save wide floods for wall washing and low ceilings.
Beam Angle Questions, Answered
What is a beam angle in LED lighting?
Beam angle is the angle at which light spreads from a fixture, measured between the two directions where intensity drops to 50% of maximum. A narrow beam angle (15-30°) creates a concentrated spot, while a wide beam angle (60-120°) produces a broad flood. It directly determines how large the light pool will be at any given distance.
How do I calculate beam spread?
Beam diameter = 2 × height × tan(angle/2). A 60° beam at 8 feet gives a 9.2-foot diameter pool. The light pool area is π × (diameter/2)². Our calculator does both instantly, and the reverse calculator finds the angle if you know your target pool size.
What beam angle for a kitchen?
Two layers: 60-90° for ambient room lighting, and 25-40° for task lighting over countertops and stoves. For under-cabinet lighting, 120° wide flood provides uniform coverage. Don't use one angle everywhere. The contrast between task and ambient is what makes a kitchen feel professional.
Spot vs flood: what's the difference?
Spots (10-30°) produce a tight, concentrated circle, ideal for highlighting artwork, products, or architectural features. Floods (40-120°) spread light broadly for general illumination. Narrow flood (40-60°) bridges the gap. Use spots to emphasize, floods to illuminate.
How does ceiling height affect beam spread?
Beam diameter grows linearly with distance. Double the height, double the diameter, but illuminance drops to one-quarter (inverse square law). A 60° beam gives 4.6 ft at 4 feet, but 9.2 ft at 8 feet. Higher ceilings call for narrower angles to maintain usable brightness at the surface.
What beam angle for wall washing?
For wall washing, use 90-120° with fixtures 2-3 feet from the wall, spaced 2-4 feet apart. The wide angle ensures even coverage without hot spots. For wall grazing on textured surfaces like brick or stone, use 30-45° placed 6-12 inches from the wall to create dramatic shadows that reveal texture.
Need fixtures with specific beam angles?
Our LED spotlight, track, and pendant collections include beam angles from 15° to 120°. All fixtures ship with IES photometric files, CRI 90+ options, and wholesale B2B pricing with global delivery.