Image Aspect Ratio Calculator
Use this image aspect ratio calculator to find the ratio of any image from its pixel width and height. It is built for searches like image ratio calculator, picture size ratio calculator, and calculate aspect ratio of an image.
Aspect Ratio
3:2
Resolution
1200×800
Display
Photo
Video
Social
3:2
How to calculate image aspect ratio
Enter the image width and height in pixels. The calculator simplifies those dimensions to the smallest matching ratio, so 1200x800 becomes 3:2 and 1080x1080 becomes 1:1.
Common pixel sizes
- 1080x1080 (1:1)
- 1080x1350 (4:5)
- 1200x800 (3:2)
- 1600x1200 (4:3)
- 1920x1080 (16:9)
- 2048x1365 (3:2)
When to use an image ratio calculator
- Checking image dimensions before upload
- Resizing photos without stretching
- Matching social media crop requirements
- Preparing thumbnails and website images
- Finding whether an image is square, portrait, or landscape
Image ratio examples
Frequently asked questions
How do I find the aspect ratio of an image?
Enter the image width and height in pixels. The calculator reduces the numbers to their simplest proportional ratio.
What is the best image aspect ratio?
It depends on where the image will be used. 1:1 works well for square posts, 4:5 for portrait feeds, 16:9 for landscape images, and 3:2 for many photos.
Can I calculate image size from a ratio?
Yes. Choose a ratio preset or enter dimensions, then lock one side and change the other to generate matching pixel sizes.