Aspect Ratio Calculator
// Calculate and lock aspect ratios for width and height
16:9
1.7778
#About Aspect Ratio Calculator
Free online aspect ratio calculator. Calculate aspect ratios, resize dimensions proportionally, and find equivalent widths and heights. This tool runs entirely in your browser — your data is never sent to a server. Just paste your input, get instant results, and copy with one click. No sign-up or installation required.
#FAQ
What is an aspect ratio? ▾
An aspect ratio is the proportional relationship between width and height, expressed as W:H. Common ratios include 16:9 (widescreen), 4:3 (standard), and 1:1 (square).
How do I maintain aspect ratio when resizing? ▾
Lock the ratio, then change either width or height. The other dimension is automatically calculated to preserve the original proportions.
</> Embed this tool ▾
Copy this code to embed the tool on your website. Adjust the height to fit your layout.
<iframe src="https://www.browserutils.dev/embed/aspect-ratio-calculator" width="100%" height="500" frameborder="0" title="Aspect Ratio Calculator"></iframe>