Aspect Ratio Calculator

Calculate proportional dimensions for any aspect ratio.

100% free
No sign-up
Instant results
Privacy-friendly

Original width Original height

New width New height

About the Aspect Ratio Calculator

Calculate proportional dimensions for any aspect ratio. The Aspect Ratio Calculator on The 360 Tools is fast, accurate and completely free — no account, no downloads and no usage limits.

Like every tool in our developer collection, the Aspect Ratio Calculator runs directly in your browser. Your input is processed locally whenever possible, so results are instant and your data stays private.

How it works

1 Paste your input or adjust the visual controls
2 Output is validated and formatted instantly
3 Copy production-ready code or download the asset

Frequently asked questions

Is the Aspect Ratio Calculator free to use?

Yes. The Aspect Ratio Calculator is completely free with no sign-up, no hidden charges and no usage limits. All tools on The 360 Tools are free forever.

Is my data safe when using the Aspect Ratio Calculator?

Yes. Your input is processed locally in your browser whenever possible and is never stored on our servers or shared with third parties.

Does the Aspect Ratio Calculator work on mobile?

Yes. The Aspect Ratio Calculator is built mobile-first and works on any modern phone, tablet or desktop browser without installing anything.