Aspect Ratio & Dimension Calculator

100% In-Browser Privacy

Calculate 16:9, 4:3, 21:9, and custom dimensions with CSS snippets.

Industry Standard Display & Video Presets

Target Aspect Ratio (Width : Height)

Simplified Fraction:16:9

Scaled Pixel Resolution (Width × Height)

Width (px)

Height (px)

Total Resolution:2.07 Megapixels (2,073,600 px)

Physical Screen Diagonal (Inches)

Pixel Density82 PPIStandard Density

Diagonal Pixels2,203 pxHypotenuse distance

Live Proportional Geometry Canvas

16:9 (1920 × 1080)

CSS & Tailwind Classes

/* CSS Aspect Ratio */
aspect-ratio: 16 / 9;
width: 1920px;
height: 1080px;

/* Tailwind CSS */
className="aspect-[16/9] w-[1920px] h-[1080px]"

AdvertisementOmnikite Zero Data Storage

Adsterra Ad Placement Slot (728x90)Configure keys in config/ads.ts to display live campaigns.

Non-Intrusive Banner

100% Zero-Upload Privacy

All computation executes exclusively inside your device memory using Web APIs and WebAssembly. No data or files ever leave your browser.

Real-Time Native Execution

Zero network roundtrips. Operates offline without sending external API requests, delivering instantaneous sub-millisecond computation.

Developer-First Architecture

Engineered with RFC standards, cryptographic primitives (Web Crypto Subtle API), and production-grade formatting libraries.