Image aspect ratio calculator

Calculate new width and height values while preserving the original image ratio.

Resize using these values

How to calculate image ratio

  1. Enter the original width and height.
  2. Enter either a new width or new height.
  3. Review the result and continue to the image resizer.

Why preserve aspect ratio?

Changing width and height independently can stretch faces and text. Set one new dimension and calculate the other to keep the original shape.

Continue to resize

Send the calculated values directly to the image resizer. Choose and export the actual file there.

FAQ

Does it show ratios such as 16:9?

Yes. It reduces the original width and height to a simple ratio using their greatest common divisor.

Will it crop my photo?

No. This calculator only finds proportional dimensions and does not crop the image.