Screens are sold by diagonal, but you need the width and height to fit a wall. Enter the diagonal and aspect ratio to get the real dimensions.
How it works
The calculator splits the diagonal using the aspect ratio. For 16:9, width is the diagonal times 0.872 and height is the diagonal times 0.490. A 100 inch 16:9 screen is therefore about 87 inches wide and 49 inches tall.
Frequently asked questions
Which aspect ratio should I pick?
Choose 16:9 for most movies, TV and gaming. Pick 16:10 for many business projectors, 4:3 for older presentation setups, and 21:9 for ultrawide cinema screens.
Does the frame around the screen count?
Screen sizes usually describe the viewing area only. Add a few inches on each side if the screen has a thick frame.
How big a wall do I need?
Make the wall at least a few inches wider and taller than the width and height shown here.
More free projector tools
Throw Distance CalculatorHow far to place the projector from the screenOpen tool →Throw Ratio CalculatorFind a projector throw ratio from distance and screen sizeOpen tool →Screen Size by Viewing DistanceThe best screen size for your seating distanceOpen tool →Lumens Needed CalculatorHow bright your projector needs to beOpen tool →Aspect Ratio CalculatorResize an image or video and keep the ratioOpen tool →HDMI Cable Length GuideMaximum cable length for your resolutionOpen tool →Projector Running Cost CalculatorElectricity and lamp cost per hour, month and yearOpen tool →Screen Brightness CalculatorFoot-lamberts and nits for your setupOpen tool →Projector Mounting Height CalculatorWhere to place the lens on the wall or ceilingOpen tool →
