Aspect Ratio Calculator - Calculate Aspect Ratio Online

Outstanding features

When do you need to calculate aspect ratio?

Aspect ratio is important in many creative and technical fields. Video editing - ensure the video is at the correct ratio for each platform: YouTube requires 16:9, TikTok and Instagram Reels need 9:16 vertical, Facebook videos are best at 1:1 or 4:5. Image resizing - crop and resize images without distortion, keeping the original proportions of the subjects. Web development - CSS aspect-ratio property helps create responsive images and videos without complicated padding-top hacks. Social media content creation - each platform has its own requirements regarding dimensions, understanding aspect ratio helps create content that fits perfectly. Print design - ensures the digital image fits into the physical print frame without being cropped or stretched. Photography - choose a crop ratio that matches the composition and intended use. Responsive web design - maintains aspect ratio of media when screen size changes. This tool helps calculate quickly and accurately, without needing to remember complicated mathematical formulas.

Benefits when used

• •Exactly - calculate minimal ratio with GCD algorithm (16:9 instead of 1920:1080)
• •Convenient - resize keeps proportions automatically, no need to manually calculate
• •Full - presets for every use case from video to social media
• •Visual - preview visual of ratio helps visualize proportions
• •Developer friendly - CSS property ready to copy into code
• •Reference comprehensive - common size table for all platforms
• •Time-saving - no need to open Photoshop or video editor to check ratio
• •Educational - learn about ratios and dimensions for different media types
• •Free and unlimited - unlimited number of uses
• •Offline capable - works after page load

How to use Aspect Ratio Calculator

1. 1Enter Width (width) and Height (height) of the original photo/video into the input box
2. 2See Aspect Ratio is automatically calculated in X:Y (Example: 16:9) and decimal (1.7778)
3. 3Or click on one of the 10+ preset buttons to apply popular ratios
4. 4To resize: enter New Width, New Height will automatically calculate to keep the ratio
5. 5Turn on/off Lock icon to keep or allow
6. 6scaling Copy ratio (16:9), decimal (1.7778), or CSS property (aspect-ratio: 16/9;)
7. 7See preview visual box to visualize proportions
8. 8Refer to the size chart below for specific use cases