The Projection Calculator can be used to calculate:

The distance from the projector to the screen, from the desired screen width and the lens type.

The lens required for a specific screen width and throw distance.

The width of the image projected by a particlular lens, and known throw distance.

The figures produced by this calculator are approximate, please use this utility accordingly.

Screen Width
Metres or  Feet, or   Inches 

Metres or  Feet, or   Inches