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Aspect Ratio Calculator
Calculate dimensions based on aspect ratios (16:9, 4:3, etc.). Perfect for images and video containers.
Result based on your input.
Width: 1920px | Height: 1080px
How to use this tool
Follow these steps to get the most out of the Aspect Ratio Calculator.
Enter a known width or height.
Select a common aspect ratio or enter a custom one.
The missing dimension will be calculated automatically.
Use the 'Ratio Finder' to find the aspect ratio of two numbers.
The guide
Understanding Aspect Ratios
An aspect ratio describes the proportional relationship between an image’s width and its height. It is commonly expressed as two numbers separated by a colon, like 16:9.
Common Standards
- 16:9 (Widescreen): The standard for HDTV, YouTube videos, and most modern screens.
- 4:3 (Standard): Old CRT monitors, iPad screens, and standard photography.
- 1:1 (Square): Classic Instagram posts and profile pictures.
- 9:16 (Vertical): Instagram Stories, TikTok, and mobile video.
- 21:9 (Ultrawide): Cinematic movie format.
Why it Matters
Maintaining the correct aspect ratio is crucial to prevent images from looking stretched or squashed. When resizing content for the web, getting the math right ensures your layout looks professional on all devices.
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