Aspect Ratio Calculator

Dimensions
Simplified Ratio
16:9
Ratio unlocked
Decimal Ratio
1.7778
width / height
Preview
16:9

About This Tool

How to Use
  1. Enter a width and height to instantly see the simplified aspect ratio.
  2. Toggle the lock icon to maintain the ratio while changing one dimension.
  3. Select a platform preset from the dropdown to load standard dimensions.
  4. Use the ratio display to verify your dimensions match your target format.
Common Use Cases
  • Resize an image while maintaining its original proportions
  • Check whether a design canvas matches a standard screen ratio like 16:9
  • Calculate video export dimensions for YouTube, Instagram, or other platforms
Tips & Tricks
  • The lock toggle lets you type in either the width or height and automatically fills the other.
  • Platform presets cover common social media, screen, and video formats.

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