Aspect Ratio Calculator
Calculate aspect ratios, resize dimensions while maintaining proportions, and find the perfect resolution for your images and videos.
Proportional Resize
Enter original dimensions (W₁, H₁), then enter either W₂ or H₂ to calculate the other while preserving the aspect ratio.
=16:9
Calculate Ratio
Enter width and height to calculate the aspect ratio.
Aspect Ratio
16:9
Decimal Ratio
1.78:1
Resize by Ratio
Lock an aspect ratio, then enter width or height to calculate the other dimension.
:
1920 × 1080
Ratio: 16:9 — 1920 × 1080 px
Common Resolutions
| Name | Resolution | Aspect Ratio |
|---|---|---|
| Full HD | 1920 × 1080 | 16:9 |
| QHD | 2560 × 1440 | 16:9 |
| 4K UHD | 3840 × 2160 | 16:9 |
| XGA | 1024 × 768 | 4:3 |
| Ultrawide | 2560 × 1080 | 21:9 |
| Square | 1080 × 1080 | 1:1 |
| Mobile Vertical | 1080 × 1920 | 9:16 |
| HD | 1280 × 720 | 16:9 |
| UWQHD | 3440 × 1440 | 21:9 |
| UXGA | 1600 × 1200 | 4:3 |