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Aspect Ratio Calculator

Calculate aspect ratios and resize dimensions proportionally with common ratio presets, simplification, and pixel count display

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About This Tool

The Aspect Ratio Calculator simplifies any width-to-height ratio and helps you resize dimensions proportionally. It features 12 common presets, a visual preview, decimal and pixel count display, and a proportional resize calculator — all processed locally in your browser with no data sent to any server.

Key Features

Quick Preview

Use Cases

aspect-ratio calculator resize

Frequently Asked Questions

What common aspect ratio presets are available?

The calculator includes 12 presets: Widescreen (16:9), Standard (4:3), Ultrawide (21:9), Square (1:1), Classic (3:2), Wide (16:10), Panoramic (2:1), Vertical (9:16), Photo (5:4), Portrait (2:3), Print (3:4), and Golden (8:5).

How does the resize feature work?

Enter a new width or height and the calculator will compute the corresponding dimension while maintaining the original aspect ratio. This ensures your resized image or video stays proportional.

What does the simplified ratio show?

The simplified ratio reduces your width and height to their smallest whole-number form using the greatest common divisor. For example, 1920×1080 simplifies to 16:9.

Is my data safe when using the Aspect Ratio Calculator?

Absolutely. All calculations happen locally in your browser. No data is uploaded to any server, ensuring your information remains completely private and secure.

Can I use the Aspect Ratio Calculator on my phone?

Yes, the calculator is fully responsive and works on all devices. On smaller screens the layout adjusts for comfortable use on smartphones and tablets.