Free calculators for ratios, dimensions, and image sizes.
calcratio.com is a collection of free online calculators for aspect ratios, image dimensions, print sizes, and social media image specifications. Every tool runs in your browser — no uploads, no account required.
The site is designed for designers, photographers, video editors, developers, and anyone who regularly works with image and screen dimensions.
calcratio.com currently offers an aspect ratio calculator with five modes (find ratio, scale dimensions, common ratios, pixel-to-print, CSS code), a golden ratio calculator, an image resizer with PPI and print size calculators, a social media image sizes reference, a pixels-to-inches converter, and individual size guides for Instagram, YouTube, Facebook, TikTok, and LinkedIn.
All calculations happen locally in your browser. No data is transmitted, no cookies are set for tracking, and no analytics run on your usage. See the Privacy Policy for full details.
Questions or suggestions? Email [email protected] or use the contact form.