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Aspect Ratio Calculator
Work out image or video dimensions that keep a given aspect ratio — enter a width or height and get the other.
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About the Aspect Ratio Calculator
Works out the width or height that keeps a given aspect ratio — enter one dimension and get the other. Useful for sizing images, videos and embeds without distortion.
What this tool checks
- Solves width or height for a ratio
- Common ratios like 16:9, 4:3, 1:1
- Shows the decimal ratio too
Frequently asked questions
What's 16:9?
The standard widescreen video ratio — 1920×1080, 1280×720 and so on all share it.
Why keep the aspect ratio?
Changing it stretches or squashes the image; matching dimensions keeps everything proportional.
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