Aspect ratio: what it is and how to use it

What is Aspect ratio?

Aspect ratio helpers compute pixel sizes for video, photo, and UI layouts. CodeGrid Tools calculates locally; inputs are not sent to a server, enabling rapid iteration. Use alongside social and player guidelines. Calculator-style tools usually do not consume file quotas. This guide explains when Aspect ratio helps and how to run it step by step in CodeGrid Tools.

When is it useful?

• Calculate ratio and pixels
• Runs in your browser—no extra software required

How to use it in CodeGrid Tools

Step 1: Choose a Ratio

Use a preset or enter a custom ratio.

Step 2: Enter One Side

Provide either the width or the height.

Step 3: Copy

Copy the calculated dimensions to the clipboard.

Tips

• Use an up-to-date browser (Chrome, Edge, Firefox, or Safari).
• Large files may take longer depending on your device.

FAQ

What is the difference between 16:9 and 4:3?
16:9 is common for widescreen video, while 4:3 appears in classic photos and presentations. Pixel calculations are based on the width-to-height ratio. How do I find the height from a known width?
Choose a ratio and enter one side; the tool calculates the other side proportionally. Where can I use the results?
Generate reference pixel sizes for video export, YouTube covers, banners, and game resolutions. Use Aspect ratio →