How to Calculate Projector Throw Ratio

How to calculate your projector throw ratio is as easy as 1,2,3 or Distance / Throw ratio x Width!

Using this handy formula you can calculate the throw ratio your projector must include. Just by knowing the distance that your projector will be from the screen or wall, and the width you would like your projected image to be, you will know the throw ratio you require.

For example, I would like to place my projector 1m from my wall and would like a 200cm or 80-inch wide image; 100cm / 200cm = 0.5, so to watch my favourite series, I would need a projector with a throw ratio including 0.5:1, such as the HZ40ST!

Already have a model in mind? Use our distance calculator to check if it's the right fit.