Aspect Ratio Calculator
Keep proportions correct when you resize. Pick a common ratio or enter your own, then type either dimension and the matching value is calculated for you.
Change either dimension and the other updates to keep the ratio.
- Dimensions
- 1920 × 1080 px
- Simplified ratio
- 16 : 9
- Decimal ratio
- 1.778
How to Use the Aspect Ratio Calculator
- 1
Tap a common ratio, or type your own ratio values.
- 2
Enter the width you want in pixels.
- 3
The matching height is filled in automatically, and the reverse also works.
- 4
Use those numbers in the Resize Image or Crop Image tool.
Aspect Ratio Calculator Features
Common presets
16:9, 4:3, 3:2, 1:1, 9:16 and 21:9 in one tap.
Two-way calculation
Enter width or height and the other follows.
Custom ratios
Any ratio you type is supported.
Simplified output
See the reduced ratio and the decimal value.
Mobile friendly
Numeric keypads and large tap targets.
Free to use
No account, no limits, no upload.