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Aspect Ratio Calculator

Calculate dimensions and ratios for images, videos, and screens accurately.

Original Dimensions

Calculated Ratio
16:9

New Dimensions

Common Presets

16:9

Ratio Visualizer

Tutorial

How to use

1
1

Input original dimensions

Enter the known width and height of your source image or video.

2
2

Calculate new size

Change either the width or height in the 'New Dimensions' section. The other value adjusts automatically.

3
3

Use presets

Quickly select common ratios like 16:9 for widescreen video or 1:1 for social media posts.

Use Cases

Use cases

Video scaling

"Find the correct width for a 720p version of your 4K video while keeping the cinematic ratio."

UI Design

"Ensure your image placeholders maintain the exact ratio required by your layout's hero section."

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