LED Beam Angle Calculator

What it does

Free lighting‑design web calculator for LED track lights and downlights. Input mounting distance or beam diameter to instantly get beam angle, spot size, plus visual beam‑cone preview. Switch between metric / imperial units. It includes standard beam‑angle reference tables for retail, artwork accent, wall‑washing and ambient lighting projects.

Free LED beam angle calculator: convert beam angle, mounting distance and beam diameter. Calculate spot size, beam spread and recommended beam angles for track lighting and downlights.

Find the beam angle, beam spread or spot size for any LED track light or downlight. Enter two values below and get the third instantly. Measure twice, install once — the calculator does the math for you. Measure from the fixture lens (light source) to the surface you want to illuminate. The bigger the distance, the larger the beam spread for the same beam angle. Choose your fixture's beam angle (e.g. 15° spot or 36° flood) or measure the beam diameter on the surface to find the angle you actually need. The calculator shows the beam diameter at your mounting distance and a visual diagram of the cone. Fine-tune values until the spot covers your display or artwork. Most LED track lights and…from lightoem.com

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