Built for Creators Who Value Precision and Speed.
We set out to build the aspect ratio tool we always wished existed: instantaneous mathematical reduction, zero-latency media inspection, and ready-to-paste CSS code — completely free of intrusive ads, paywalls, or privacy-compromising server uploads.
Why Traditional Calculators Failed Creators
For years, resizing an image, determining an ultrawide monitor ratio, or prepping a vertical video crop for TikTok meant using legacy websites created two decades ago.
Those sites shared the same frustrating flaws:
- ✕Cluttered Ads: Flashing banner ads and popups that caused layout shifts and slowed down browser rendering.
- ✕Server Uploads: Forcing editors to upload private 4K video clips or sensitive client graphics just to extract simple pixel dimensions.
- ✕Float Rounding Errors: Imprecise fraction reductions that produced broken aspect ratio values in production CSS and motion graphics.
A Modern, Developer-Grade Studio
We designed Aspect Ratio Calculator (myaspectratio.com) using the Vercel Geist design system — focusing entirely on craftsmanship, tactile keyboard shortcuts, dark-mode elegance, and immediate utility.
Every calculation runs in local browser memory. When you drag in a 100MB camera file, the browser's native Canvas API extracts its exact pixel dimensions and aspect ratio in less than 5 milliseconds. Nothing leaves your laptop.
Our Core Engineering Pillars
Every feature we ship adheres to four unyielding principles of software quality.
1. Mathematical Rigor & GCD Simplification
We implement exact Euclidean Greatest Common Divisor algorithms for integer resolutions (reducing 3840×2160 directly to 16:9), paired with high-precision decimal tolerance matching for cinema anamorphic standards like 2.39:1 and 1.85:1.
2. 100% In-Browser Client Isolation
Zero photos, video footage, or dimension data are ever sent across the wire. Your intellectual property and NDA client media remain strictly isolated on your personal computer.
3. Production-Ready Code Outputs
We bridge the gap between design and engineering. Get instant copyable snippets for modern CSS aspect-ratio: 16 / 9;, Tailwind CSS classes, responsive padding-top hacks, and FFmpeg command-line flags.
4. Continuously Verified Platform Specs
Social platforms update their UI safe zones, story cutoffs, and compression bitrates regularly. Our technical guides and presets are monitored and updated to match the latest specs for TikTok, YouTube, Instagram, and camera sensors.
Specialized Creator Studios
Calculate missing width or height with instant GCD ratio reduction and decimal aspect ratio feedback.
Drag any image or video file to inspect exact dimensions, megapixel count, EXIF orientation, and crop previews.
Browse 50+ categorized presets for social media, cinema, TV broadcasts, and paper print standards.
Resize and calculate entire lists of resolutions in bulk with one-click CSV export and batch preview.
Enter any non-standard ratio to discover the closest standard display or social video resolutions.
Convert screen pixel dimensions into physical print sizes in inches or centimeters at 300, 150, or 72 DPI.
Have an idea or need a specific camera preset?
We continuously improve our mathematical algorithms and add support for new displays, anamorphic lenses, and social platforms based on community feedback.