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Aspect Ratio Calculator

Calculate aspect ratios and scale dimensions for images and videos.

Everyday
Aspect Ratio Calculator
Calculate aspect ratios and scale dimensions for images or videos.

Original Size

x

Ratio: 16:9

New Size

x

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Maintain Proportions with Ease

This Aspect Ratio Calculator is an essential tool for designers, photographers, and video editors. It helps you resize images or videos while maintaining their original proportions, preventing the content from being stretched or distorted. It can also simplify a ratio to its common form (e.g., 1920x1080 becomes 16:9).

The Formula Explained

Aspect ratio is the proportional relationship between the width and height of an image. The core formula is a simple proportion: Original Width / Original Height = New Width / New Height

By knowing any three of these values, you can solve for the fourth. For example, to find the new height: New Height = (New Width * Original Height) / Original Width

How to Use the Calculator

  1. Enter Original Size: Input the width and height of your original image or video.
  2. The calculator will automatically display the simplified aspect ratio (e.g., 16:9, 4:3).
  3. Enter New Size: To resize, type a new value into either the 'New Width' or 'New Height' field.
  4. The other dimension will be calculated automatically to maintain the correct aspect ratio.

Real-World Example

You have a video with dimensions 1920x1080 (a 16:9 aspect ratio). You need to create a smaller version that is 640 pixels wide.

  1. Enter 1920 and 1080 as the original size.
  2. Enter 640 into the 'New Width' field.
  3. The calculator will automatically compute the 'New Height' as 360 pixels, maintaining the 16:9 ratio.

Frequently Asked Questions (FAQ)

  • What are some common aspect ratios?
    • 16:9: Widescreen video (HDTV, YouTube).
    • 4:3: Standard definition television and older computer monitors.
    • 3:2: Common for DSLR cameras.
    • 1:1: Square, popular on platforms like Instagram.
  • Why is maintaining aspect ratio important? If you resize an image without maintaining its aspect ratio, objects in the image will appear squashed or stretched, which looks unprofessional and distorted.
  • What do the ratio numbers mean (e.g., 16:9)? It means that for every 16 units of width, there are 9 units of height. It describes the shape of the rectangle, not its actual size.