Aspect ratio calculator
Find the aspect ratio of any size and scale it to a new width or height.
Presets
Original size
—
New size
Runs locally in your browser. Nothing is uploaded.
How to use
- Enter the original width and height.
- Enter a new width or height; the other side is computed.
- Or pick a preset like 16:9 or 4:3.
Questions
What is 1920×1080?
16:9. The calculator reduces any size to its simplest ratio.