Everyday & creator
Aspect ratio calculator
Calculate image and video aspect ratios, simplify dimensions, and find a missing width or height. Use presets for landscape, square, and portrait.
Free to useNo sign-upOn your device
Opening your workspace…
How to use it
- 01
Enter the source width and height or choose a preset.
- 02
Read the simplified ratio.
- 03
Enter a new width to calculate the matching height.
A few useful answers
What is the aspect ratio of 1920 × 1080?
It simplifies to 16:9. Other resolutions such as 1280 × 720 have the same proportions.
Are output dimensions rounded?
Yes. Pixel dimensions use whole numbers, so a calculated value is rounded to the nearest pixel.