How to Calculate aspect ratios

Calculate and convert image and video aspect ratios instantly. Enter dimensions to find the ratio, or lock a ratio and scale to new sizes.

4 min read Aspect Ratio Calculator Free, no signup required

Quick start

Aspect Ratio Calculator — Calculate and convert image and video aspect ratios instantly.

Get started in under two minutes:

Upload your image
Review and adjust settings
Review the output
Copy the result

Open Aspect Ratio Calculator

Step-by-step instructions

Follow these steps to get the best results from Aspect Ratio Calculator:

Upload your image

Click the upload area or drag and drop your image. Supported formats include JPG, PNG, and WebP.

Tip: The original file is not modified. All changes are applied to the downloaded copy only.

Review and adjust settings

Use the settings panel to refine the output. Aspect Ratio Calculator lets you and convert image and video aspect ratios instantly.

Tip: Most settings work well at their defaults — only adjust when you need specific output.

Review the output

Check the result against what you expected. Look for any errors or unexpected output.

Tip: Verify the result before using it in production.

Copy the result

Click the "Copy" button to copy the output to your clipboard. The button briefly changes to "Copied!" to confirm the action.

Tip: Paste the result directly into your project, code editor, or document.

Open Aspect Ratio Calculator

Frequently asked questions

Is Aspect Ratio Calculator free to use?

Yes — Aspect Ratio Calculator is completely free with no account or signup required. All core features are available immediately.

Which image formats are supported?

JPG, PNG, WebP, and GIF are the most widely supported formats. The exact input and output formats depend on the operation.

Does Aspect Ratio Calculator work on mobile devices?

Yes — Aspect Ratio Calculator works on smartphones and tablets through any modern mobile browser. The interface adapts to smaller screens automatically.