Aspect Ratio Calculator

Calculate missing dimensions while maintaining standard ratios (16:9, 4:3, 1:1, 21:9) or custom ratios.

Loading interactive Aspect Ratio Calculator interface...

How to Use Aspect Ratio Calculator

  1. Enter original width and height, or choose a preset like 16:9
  2. Enter a new width or height to get the proportional counterpart.

Technical Specifications & Formula

New Height = (Original Height / Original Width) × New Width.

Frequently Asked Questions

What is the standard aspect ratio for YouTube?

16:9 is the universal standard for YouTube desktop and TV video.

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