Beam Angle Calculator

December 11th - Stage Lighting Tools - by Rob

On Stage Lighting presents a simple Beam Angle Calculator to help you find the correct spotlight for your show.

If you need to project a gobo image to a certain size or the pool of a spotlight to be a specific width , you need to find out the beam angle . The calculation to find Beam Angle using the Throw Distance/Beam Diameter is simple trigonometry that we have compiled into the Beam Angle Calculator using Javascript. There are also some useful stage lighting calculators on the Stage Lighting iPhone Apps page

Throw Distance:
Units

Beam Width/Diameter:
Units

degrees

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