Aspect Ratio Pixel Calculator
Use this aspect ratio pixel calculator to convert width and height into a simplified ratio, or to generate matching pixel dimensions from a target ratio.
Dimensions
px
px
Aspect Ratio
16:9
Resolution
1920×1080
Display
Photo
Video
Social
Preview
16:9
Landscape1.778
How to calculate aspect ratio from pixels
Enter pixel width and height. The calculator divides both numbers by their greatest common divisor, turning 1920x1080 into 16:9 and 1080x1350 into 4:5.
Common pixel sizes
- 1080x1080 (1:1)
- 1080x1350 (4:5)
- 1080x1920 (9:16)
- 1200x630 (1.91:1)
- 1920x1080 (16:9)
- 2560x1440 (16:9)
Pixel calculator use cases
- Find a ratio from existing dimensions
- Generate matching width or height
- Resize images and videos without distortion
- Prepare social media assets
- Check resolution before exporting
Pixel ratio examples
1920x1080 = 16:9
1080x1920 = 9:16
1200x630 = 40:21, commonly treated as 1.91:1
Frequently asked questions
How do I calculate aspect ratio from pixels?
Enter the pixel width and height. The calculator simplifies both values to the smallest whole-number ratio.
Can I find pixels from an aspect ratio?
Yes. Choose a ratio preset, lock one dimension, then enter the width or height you need.
Is resolution the same as aspect ratio?
No. Resolution is the actual pixel size, such as 1920x1080. Aspect ratio is the proportional shape, such as 16:9.