Calculators
Aspect ratio calculator
Find the aspect ratio of an image or screen and calculate a matching width or height without stretching it.
Calculated on your device. Your input isn’t uploaded or saved.
Your result
Your result will appear here.
Keep the same shape at a different size.
Enter the original width and height, then the new width or height you need. A 1920 × 1080 image has a 16:9 ratio; at 1280 pixels wide, it is 720 pixels high.
Which measurements should I enter?
Use positive whole numbers in the same unit, usually pixels. You can also enter a ratio directly, such as width 16 and height 9. The ratio is always shown as width:height.
Why is a dimension rounded?
An image needs whole pixels. The matching dimension is rounded to the nearest pixel, so some sizes have a slightly different ratio. To change the actual image, use Image resizer & cropper.