Aspect Ratio Calculator

1. Select a mode: calculate ratio from dimensions, resize keeping ratio, or browse common presets.
2. Enter your width and height values in the input fields.
3. The simplified aspect ratio or resized dimension is calculated automatically.
4. Click the copy button to copy any result to your clipboard.

Understanding Aspect Ratios

An aspect ratio describes the proportional relationship between width and height. It is fundamental in display technology, photography, videography, and web design. This tool uses the greatest common divisor (GCD) algorithm to simplify pixel dimensions into their cleanest ratio form, and can proportionally resize dimensions so your images and videos maintain their original proportions.