Aspect Ratio Calculator
Calculate aspect ratios, resize dimensions proportionally, and find equivalent s...Calculate aspect ratios, resize dimensions proportionally, and find equivalent sizes for images and videos. Support for all common formats like 16:9, ...
Common Aspect Ratios
Common Resolutions (16:9)
Calculator Features
Why Use Aspect Ratio Calculator?
Multiple Formats
Support for all common aspect ratios including 16:9, 4:3, 1:1, 21:9, and more.
Lock & Scale
Lock the aspect ratio and scale dimensions proportionally without distortion.
Instant Results
Get immediate calculations with visual preview of your aspect ratio.
Easy Copy
Copy calculated ratios with one click for use in your projects.
All Devices
Works on desktop, tablet, and mobile for on-the-go calculations.
Megapixel Counter
See the total megapixels for any dimension combination.
Common Use Cases
Video Production
Ensure videos fit YouTube (16:9), TikTok (9:16), or cinema (21:9) formats.
Responsive Images
Scale images proportionally for different screen sizes and devices.
Social Media
Create perfectly sized posts for Instagram (1:1), Twitter (16:9), or Stories (9:16).
Print Design
Match standard photo sizes like 4x6 (3:2) or 8x10 (5:4).
How It Works
Enter Dimensions
Input your width and height values in pixels.
View Ratio
See your simplified aspect ratio, decimal value, and megapixels instantly.
Adjust or Apply
Lock the ratio and adjust one dimension, or click a preset to apply a standard ratio.
Tips & Best Practices
Match Your Platform
Always check your target platform's recommended aspect ratio before creating content. YouTube uses 16:9, Instagram feed uses 1:1, and Stories use 9:16.
Use the Lock Feature
Enable 'Lock aspect ratio' before resizing to ensure your dimensions stay proportional and avoid distortion.
Resolution vs Ratio
Aspect ratio (16:9) is different from resolution (1920x1080). The same ratio can have many different resolutions.