Aspect Ratio Calculator
Instantly scale dimensions proportionally
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⚙️ How It Works
Enter the original width and height to discover the aspect ratio, or enter a target dimension along with the ratio to automatically calculate the exact matching width or height required for proportional scaling.
❓ Frequently Asked Questions
What are common aspect ratios?
Common ratios include 16:9 (standard HD video), 4:3 (legacy monitors and photography), 1:1 (square imagery for social media), 3:2 (standard photography), and 21:9 (ultrawide monitors).
How do I calculate an aspect ratio?
By entering a known width and height, the tool simplifies the fraction to find the base ratio. Entering a target width or height will solve for the missing dimension using cross-multiplication.
Why is aspect ratio important in web design?
Maintaining the correct aspect ratio prevents images and videos from appearing stretched or distorted on varying screen sizes, ensuring a responsive and professional UI design.
Does the Aspect Ratio Calculator work offline?
Yes, the Aspect Ratio Calculator is fully functional offline. Because this tool runs entirely in your browser, no data is ever uploaded to external servers. Once the page is loaded, you can seamlessly continue using it without an active internet connection. You can also install Knicknaks as a Progressive Web App (PWA) for native-like offline access.