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Aspect Ratio Crop Calculator

Design utilities: colors, gradients, CSS, and SVG tools.

What does this tool do?

Crop images and videos to exact aspect ratios. Enter your dimensions, pick 16:9, 4:3, 1:1 or 9:16 (or custom), and get the largest centered crop that fits.

Supported formats
CSS SVG HEX RGB HSL

Key features

  • Live preview
  • Copy CSS instantly
  • Export options
  • Professional output

Crop images and videos to exact aspect ratios. Enter your dimensions, pick 16:9, 4:3, 1:1 or 9:16 (or custom), and get the largest centered crop that fits.

Crop area
Crop Size
-
Trimmed
-
Ratio
16:9

How to Use

  1. Enter your original width and height in pixels.
  2. Pick a target ratio like 16:9 or 1:1.
  3. See the exact centered crop dimensions and a visual preview.

Core Features

  • 6 common ratio presets plus visual crop preview
  • Largest centered crop computed automatically
  • Shows exactly how much gets trimmed
  • Free, instant, no signup

Frequently Asked Questions

What does "largest centered crop" mean?

It is the biggest rectangle of your target ratio that fits inside the original, centered - so nothing important near edges is favored.

Is this calculator free?

Yes, free forever.

How to Use Aspect Ratio Crop Calculator

1
Customize
Adjust colors, sizes, and styles.
2
Preview
See changes in real time.
3
Copy Code
Get production-ready CSS/SVG.
100% Private & Secure: This tool runs entirely in your browser. Your data never leaves your device and is never sent to any server.

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