Aspect Ratio Calculator: Find a Ratio and Resize Without Distortion

We shipped a new free Aspect Ratio Calculator in Shotomatic. Enter a width and height to get the simplified ratio, then work out a new size that keeps the same shape.

What's New

• Enter width and height in pixels, or type a ratio such as 2.39:1
• Paste a size like 1920x1080 into either field
• Start from Common ratios when you already know the shape you want
• Read the size of an image with Use an image, or drop or paste one

Read the Result

The result shows the simplified ratio, its decimal value, and a preview of the shape. When a size is close to a standard ratio but not exact, the calculator marks it with ≈.

• Use Resize with the same ratio to enter one new side and get the other
• Click Copy size to copy the new dimensions
• Use an image reads only the width and height; the image stays on your device

Limits

• Width and height up to 100,000 pixels

Fast Workflow

1. Open the Aspect Ratio Calculator
2. Enter a width and height, or use an image
3. Read the simplified ratio
4. Enter one side under Resize with the same ratio
5. Click Copy size

Try It Now

Use the new Aspect Ratio Calculator.
See all utilities on the Tools page.