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The most widely used ratios across video, photography, and digital media.
| Ratio | Decimal | Common Uses |
|---|---|---|
| 16:9 | 1.78 | HD video, YouTube, presentations, monitors |
| 4:3 | 1.33 | Traditional TV, older monitors, iPad video |
| 3:2 | 1.50 | DSLR / mirrorless photos, 35mm film |
| 1:1 | 1.00 | Instagram square post, profile photos, icons |
| 9:16 | 0.56 | TikTok, Instagram Reels / Stories, YouTube Shorts |
| 21:9 | 2.33 | Ultrawide monitors, cinematic films |
| 2:1 | 2.00 | Wide landscape photography, dual-monitor setups |
| 1.91:1 | 1.91 | Facebook & LinkedIn posts, Open Graph images |
| 4:5 | 0.80 | Instagram portrait post, mobile-friendly vertical |
| 5:4 | 1.25 | Medium format photography, some monitors |