Aspect Ratio Calculator
Calculate aspect ratios and resize dimensions proportionally. Supports all common ratios (16:9, 4:3, 1:1, etc.) with visual preview.
Aspect Ratio Calculator
Easily calculate aspect ratios and dimensions for screens, images, and videos.
Find Ratio
Enter dimensions to find the aspect ratio.
Find Dimensions
Enter one dimension and ratio to find the other.
Common Aspect Ratios
- 16:9 - Standard widescreen (HDTV, YouTube)
- 4:3 - Standard TV (Old CRT, iPad)
- 21:9 - Ultrawide monitors, Cinema
- 1:1 - Square (Instagram)
- 9:16 - Vertical video (Stories, TikTok, Reels)
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About This Tool
This tool runs entirely in your browser. No data is sent to any server, ensuring complete privacy. Simply use the interface above to get started — no registration or login required.
Disclaimer: This tool is provided "as is" without warranty of any kind. Results are for educational and utility purposes.
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