Beam Angle Calculator

11 December - Stage Lighting Tools - by: Rob Sayer



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.

Update:// There are now quite a few stage lighting calculators for your iPhone. Look at out Stage Lighting iPhone Apps page

Throw Distance:
Units

Beam Width/Diameter:
Units

degrees

If this has helped you, consider buying me a beer and CLICK HERE to donate a few bucks to On Stage Lighting (why should I donate?). Thanks, - Rob

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Rob is a freelance LD and Programmer working the the UK events industry. He is also the Editor of On Stage Lighting

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