Hi Product Hunt! I made DisplayMath because "55 or 65?" is a question about how much wall the picture covers and how far away you sit, and every calculator I found answered it with a table. So this one draws. Add any two screens (about 800 presets, or type your own) and they land on top of each other at true scale. Switch to your seat and it shows what each one fills of your view, how sharp it is from there, and where the "cinema" seat is. On an iPhone, tap View on your wall and the actual-size screen stands in your room, no app to install. The video is my own living room: a 97" over the 77" I already have. Free, no signup, nothing to install. I am here all day, ask me anything, and if you find a screen missing from the presets tell me and I will add it.

DisplayMath

See any screen on your wall, to scale, before you buy

See any screen on your wall, to scale, before you buy