Aspect Ratio Calculator

Find the simplified aspect ratio of a width and height, then scale to a new width or height without distortion.

Calculate an aspect ratio

Calculated instantly in your browser.

Browser-based

Original size

Width

×

Height

Aspect ratio—

Scale to a new size

New width

×

New height

Enter a new width or height to scale proportionally.

How to use it

Enter the original width and height, or tap a common ratio.
Read the simplified ratio and orientation.
Type a new width or height. The other value is calculated to keep the same proportions.

Examples

1920 × 1080 simplifies to 16:9
1600 × 1200 simplifies to 4:3
Scaling 16:9 to 1280 wide gives 720 high.

When the new size is not a whole number it is shown rounded to two decimals; round to the nearest pixel for the final image.