Calculate aspect ratios and find missing video dimensions.
Aspect ratio is the proportional relationship between a video's width and height, expressed as two numbers separated by a colon (e.g., 16:9). It determines the shape of your video frame and how it displays on different screens and platforms.
| Aspect Ratio | Common Resolutions | Use Cases |
|---|---|---|
| 16:9 | 1920×1080, 3840×2160, 1280×720 | HD TV, YouTube, most modern video |
| 4:3 | 640×480, 800×600, 1024×768 | Old TV, classic video, some presentations |
| 21:9 | 2560×1080, 3440×1440 | Ultrawide monitors, cinematic video |
| 1:1 | 1080×1080, 1200×1200 | Instagram posts, profile pictures |
| 9:16 | 1080×1920, 720×1280 | Instagram Stories, TikTok, vertical video |
| 2.39:1 | 4096×1716, 2048×858 | Cinematic films, theatrical releases |
| 4:5 | 1080×1350, 864×1080 | Instagram portrait posts |
Film and television use various aspect ratios to achieve different aesthetic effects:
| Format | Ratio | Description |
|---|---|---|
| Academy Standard | 1.37:1 (4:3) | Classic Hollywood films pre-1950s |
| HDTV | 1.78:1 (16:9) | Modern TV shows, streaming content |
| Widescreen | 1.85:1 | Common theatrical format in North America |
| Anamorphic | 2.39:1 (2.40:1) | Cinematic widescreen, epic films |
| Ultra Panavision | 2.76:1 | Super wide, rare (The Hateful Eight) |
When converting between aspect ratios, you have three main options:
Find Aspect Ratio: Divide width by height and simplify
Example: 1920 ÷ 1080 = 1.777... ≈ 16:9
Find Height: Height = Width ÷ (Ratio Width ÷ Ratio Height)
Example: Height = 1920 ÷ (16 ÷ 9) = 1080
Consider these factors when selecting an aspect ratio:
Popular Ratios:
16:9 Format: