Aspect Ratio Calculator
Convert and calculate aspect ratios with common presets and custom ratios.
Given an aspect ratio and one dimension, calculate the other
Features
The aspect ratio calculator helps quickly calculate and convert various aspect ratios for design, video production, screen adaptation, and more.
Usage Instructions
Features
Automatically calculate and simplify aspect ratios from width and height, or derive one side from a ratio and the other side. Built-in presets include 16:9, 4:3, 9:16 for design, video, and screen scenarios.
Steps
Enter width and height to auto-get the simplified aspect ratio → in "Calculate Size by Ratio" fill in the ratio and known size to compute the other side → or click a preset to apply it directly.
Notes
All calculations run locally in the browser and no data is uploaded; ratio simplification uses integer GCD and inputs must be positive; size results keep up to 4 decimal places.