Screen & Cinema Planner — Screen size calculator — OnePassApps
Compare screen width, height, area and viewing angles from diagonal size, aspect ratio and seating distance. Export a same-scale SVG diagram.
Screen & Cinema Planner compares the visible geometry of two flat screens. Enter each diagonal and aspect ratio, then choose a shared seating distance. The same-scale outlines and measurement table show how width, height, area and viewing angle change. These calculations describe your inputs; they do not choose a television or prescribe a viewing distance.
What you can do
- Compare common aspect ratios or enter a custom ratio, using inch and centimetre diagonal measurements.
- See width, height, square-metre area, percentage area difference and horizontal and vertical fields of view.
- Export a standalone SVG with solid and dashed screen outlines, so the comparison does not depend on colour alone.
Limitations
- Dimensions describe visible flat-screen geometry and exclude frames, stands, mounting clearance, room layout, curved screens, resolution and content letterboxing.
- Viewing angles assume a screen centred in front of the viewer. They are not comfort, health or safety recommendations. Inputs remain in tab memory only.
Is Screen & Cinema Planner free, and do I need an account?
Yes, it is free. Screen & Cinema Planner runs in your browser with no account or payment details, and it never uses OnePassApps credits.
Read the How to compare screen dimensions and viewing angles guide
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