Skip to content
M2TOOLKIT

Popular tools

Menu

Aspect Ratio Calculator

Find an aspect ratio and resize while keeping it.

  • Free
  • No sign-up
  • Nothing is sent or stored
Resize by

Result

New size
1,280 × 720
Aspect ratio
16:9
As a decimal
1.7778 : 1
Closest standard ratio
16:9
Rounded to whole pixels
1280 × 720

The calculation happens instantly in your browser. The numbers you enter are not sent to our servers or saved.

How to use the Aspect Ratio Calculator

  1. Enter the original width and height.
  2. Choose whether you know the new width or height.
  3. Read the new size and the ratio.

What does this tool do?

Aspect ratio is the proportion of width to height: 1920 × 1080 is 16:9. Resizing without keeping the ratio stretches or squashes the image.

The calculator simplifies the ratio, shows the nearest standard ratio and rounds the new size to whole pixels.

Why use it?

  • Simplified ratio.
  • Nearest standard ratio.
  • Whole-pixel results.

Privacy

The calculation happens instantly in your browser. The numbers you enter are not sent to our servers or saved. There's no account to create and nothing to install.

Last reviewed by the M2Toolkit team.

Other tools people use alongside the aspect ratio calculator.