Aspect Ratio Calculator
Calculate aspect ratios and resize dimensions while maintaining proportions. Perfect for images, videos, and design work.
Original Dimensions
Calculated Aspect Ratio
Ratio
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Decimal
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Calculate New Dimensions
Enter one dimension to calculate the other while maintaining the aspect ratio
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Visual Preview
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Preview shows the proportions of your aspect ratio
Common Aspect Ratios
How it works
1
Enter dimensions
Input width and height or upload an image
2
Get ratio
See the simplified aspect ratio instantly
3
Resize
Enter one dimension to calculate the other
4
Copy & use
Copy dimensions for your project
Features
Instant Calculation
Get the simplified aspect ratio as soon as you enter dimensions.
Image Upload
Upload any image to automatically detect its dimensions.
Quick Presets
One-click selection for common ratios like 16:9, 4:3, and 1:1.
Visual Preview
See a visual representation of your aspect ratio in real-time.
Aspect Ratio Reference
| Ratio | Decimal | Name | Common Uses |
|---|---|---|---|
| 1:1 | 1.000 | Square | Instagram posts, Profile pictures, App icons |
| 4:3 | 1.333 | Standard | Digital cameras, iPad, Presentations |
| 3:2 | 1.500 | Classic | 35mm film, DSLR cameras, Print photos |
| 16:9 | 1.778 | Widescreen | YouTube, TV, Desktop monitors |
| 9:16 | 0.563 | Vertical | Instagram Stories, TikTok, Reels |
| 21:9 | 2.333 | Ultrawide | Cinema, Ultrawide monitors, Movie banners |
More Aspect Ratios
| Ratio | Decimal | Common Uses |
|---|---|---|
| 5:4 | 1.250 | Large format photography, Some monitors |
| 3:1 | 3.000 | Panoramic photos, Website banners |
| 2:1 | 2.000 | Univisium film format, 360 video |
| 2.35:1 | 2.350 | Cinemascope, Anamorphic widescreen |
| 2.39:1 | 2.390 | Modern cinema, Panavision |
| 4:5 | 0.800 | Instagram portrait posts |
Perfect For
Social Media PostsVideo ProductionWeb DesignPhotographyGraphic DesignPrint MediaPresentationsApp DevelopmentYouTube ThumbnailsDigital Advertising