📐Aspect Ratio Calculator
Calculate new dimensions while maintaining aspect ratio.
🆓 Free🔒 Secure⚡ Instant📱 Mobile-friendly🚫 No signup
Calculate aspect ratio and new dimensions online for free. Maintain proportions when resizing.
Aspect Ratio16:9
New Width1280
New Height720
How to Use Aspect Ratio Calculator — Step by Step
- 1Enter the width and height of your element or image
- 2Click 'Calculate Ratio' — the exact aspect ratio is shown (e.g. 16:9, 4:3)
- 3Enter a new width to get the correct height for that ratio, or vice versa
- 4Copy the ratio or the calculated dimension
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Frequently Asked Questions
Is this tool completely free?
Yes. All ToolNest tools are 100% free with no signup required, no account, and no watermarks added to output files.
Are my uploaded files secure and private?
All uploads use HTTPS encryption during transfer. Files are processed on secure isolated servers and automatically deleted within 2 hours of upload.
Does this tool work on mobile phones?
Yes. ToolNest works on any modern browser on iPhone, Android, tablet, or desktop — no app download or plugin needed.
Do I need to create an account?
No. Just open the tool, upload your file, and download the result. No email, no signup, no password.