Pixel dimension tool
Resolution calculator
Lock an aspect ratio, then change either width or height. The calculator updates the companion dimension while preserving the selected proportion.
Images are processed locally in your browser.
Quick reference
| 16:9 at 1920 wide | 1920 × 1080 |
|---|---|
| 9:16 at 1080 wide | 1080 × 1920 |
| 4:5 at 1080 wide | 1080 × 1350 |
| 1:1 at 1200 wide | 1200 × 1200 |
Use it to scale an image or canvas up or down without stretching, or to create exact dimensions for a platform export.