Aspect Ratio Calculator
Simplify a width and height to an aspect ratio, and scale dimensions while keeping the same ratio.
Set a new width and we'll work out the matching height.
Or set a new height and we'll work out the matching width.
Result
Aspect ratio
—
Enter a width and a height greater than zero.
Enter a width and height to see the simplified aspect ratio. To resize, enter a new width or a new height and we'll work out the other dimension so the ratio stays the same.
Frequently asked questions
What aspect ratio is 1920x1080?
It's 16:9, the standard widescreen ratio for HD and most modern displays. 1920 and 1080 share a greatest common divisor of 120, giving 16:9.
How do I resize an image without stretching it?
Keep the same aspect ratio. Enter the original width and height, then a new width — this calculator gives the matching height so the proportions stay correct.