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Aspect Ratio Calculator

Use this free online Aspect Ratio Calculator to calculate aspect ratio and resize dimensions. It works instantly in your browser, and your data never leaves your device.

About the Aspect Ratio Calculator

Find the aspect ratio of any width and height, and calculate a new height or width that keeps the same ratio, for 16:9, 4:3 and more.

Also known as: 16:9 calculator.

How to use the Aspect Ratio Calculator

  1. Enter your values in the fields above.
  2. The Aspect Ratio Calculator updates the result instantly as you type.
  3. Copy the result or change any value to compare scenarios.

Features

  • Free with no signup and no daily limits
  • Private: runs entirely in your browser
  • Works on mobile, tablet and desktop
  • Instant results with no button to press
  • Clean, fast interface with no popups

Frequently asked questions

Is the Aspect Ratio Calculator free to use?

Yes. The Aspect Ratio Calculator is completely free with no signup, no limits on normal use and no watermark.

How accurate is this calculator?

Calculations use standard formulas with full floating point precision. Results are rounded only for display. For financial or medical decisions, confirm with a professional.

What else is this tool called?

People also search for it as 16:9 calculator. It is the same free tool.