Free, simple calculators for projector buyers. Work out throw distance, screen size, brightness, cable length and running costs in seconds. No sign-up needed.
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 CalculatorScreen width and height from the diagonalOpen 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 →
How to use these tools
Start with the throw distance and screen size tools if you are planning a room. Use the lumens and screen brightness tools to check that a projector will be bright enough, and the running cost calculator to see what it costs to use. Every result is an estimate, so always check the numbers against the projector manual.
These tools are for guidance only.
