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Aspect Ratio Calculator

Image

Resize dimensions while keeping a fixed aspect ratio, with simplified ratios.

Aspect ratio

Simplified 16:9 · decimal 1.7778

Width → Height

Height = 1080

Height → Width

About the Handiwork Aspect Ratio Calculator

The Aspect Ratio Calculator resizes dimensions while keeping the same proportions and finds the simplified ratio (such as 16:9) for any width and height. Change one dimension and the other updates automatically, so images and videos never end up stretched.

How to use the Handiwork Aspect Ratio Calculator

  1. Enter your original width and height.
  2. Change either dimension to get the proportional value for the other.
  3. See the simplified aspect ratio for your dimensions.

What is an aspect ratio?

An aspect ratio expresses the relationship between width and height, like 16:9 for widescreen video or 1:1 for a square. Keeping the ratio constant when resizing ensures content scales cleanly without distortion or unexpected cropping.

Common ratios and where they’re used

16:9 is standard for video and most screens, 4:3 is used by older displays and many presentations, 1:1 suits social media squares, and 9:16 fits vertical stories and reels. Knowing the target ratio helps you design and export at the right dimensions.

Frequently asked questions

How do I keep an image from looking stretched?

Resize using the same aspect ratio. Enter one new dimension and let the calculator compute the matching value for the other.

How is a ratio like 16:9 found?

The calculator divides the width and height by their greatest common divisor to reduce them to the simplest whole-number ratio.