📐 Aspect Ratio Calculator
Calculate image and video dimensions while maintaining the correct aspect ratio. Perfect for resizing photos, videos, and design layouts.
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Visual Preview
16:9
Result matches standard 1080p Full HD
Common Resolutions for this Ratio
What is Aspect Ratio?
Aspect ratio is the proportional relationship between the width and height of an image or screen. It is commonly expressed as two numbers separated by a colon, as in 16:9. A 16:9 aspect ratio means that for every 16 units of width, there are 9 units of height.
Common Aspect Ratios
- 16:9 - The standard for HDTV, YouTube, and most computer monitors.
- 4:3 - The old standard for TVs and computer monitors (SD). Still used in some tablets (iPad).
- 1:1 - A perfect square, popularized by Instagram feeds.
- 9:16 - Vertical video standard for smartphones (TikTok, Instagram Reels, YouTube Shorts).
- 21:9 - Ultrawide or Cinematic format, used in modern gaming monitors and movies.