Video aspect ratio calculator
Updated 2 October 2026
Type a width and height to get the aspect ratio, or pick a ratio and a width to get the height.
×
16:9
For this width
Runs entirely in your browser. Nothing is recorded or uploaded.
Which ratio for where?
- 16:9 — YouTube, presentations, most screens.
- 9:16 — Shorts, Reels, TikTok and stories.
- 1:1 and 4:5 — feeds on Instagram and LinkedIn.
- 4:3 — older slides and some tablets.