Projector Screen Size Calculator

Calculate projector screen size from throw distance.

Throw Distance (ft)

Throw Ratio

Aspect Ratio

Formula

Screen Width = Throw Distance / Throw Ratio

What is throw ratio?

Throw ratio is the distance to the screen divided by the screen width.

What throw ratio is best for home theater?

A throw ratio of 1.3 to 1.6 works well for most home setups.