Aspect Ratio Calculator
Calculate aspect ratios and resize dimensions while maintaining proportions.
The Aspect Ratio Calculator helps you determine the aspect ratio of any image or screen dimensions, and calculate new dimensions while maintaining the same proportions.
Aspect ratio is the proportional relationship between width and height. Common ratios include 16:9 (widescreen), 4:3 (traditional), 1:1 (square), and 21:9 (ultrawide). Knowing your aspect ratio is essential for responsive design, video production, and print layouts.
Enter your current width and height to get the simplified ratio. Optionally enter a new width or height to calculate the corresponding dimension that maintains the same aspect ratio.
Everything runs in your browser. Your data is never sent to any server.
Aspect ratio is the proportional relationship between width and height. Common ratios include 16:9 (widescreen), 4:3 (traditional), 1:1 (square), and 21:9 (ultrawide). Knowing your aspect ratio is essential for responsive design, video production, and print layouts.
Enter your current width and height to get the simplified ratio. Optionally enter a new width or height to calculate the corresponding dimension that maintains the same aspect ratio.
Everything runs in your browser. Your data is never sent to any server.
Calculator
Results
How to Use
- Enter the current width and height
- Optionally enter a new width or height for proportional resize
- Click Calculate to see the aspect ratio
FAQ
What is the most common aspect ratio?
16:9 is the most common for screens, monitors, and video. 1:1 is common for social media posts. 4:5 is popular for Instagram portraits.
Is my data uploaded?
No. Everything runs in your browser. Your images and data never leave your device.
Is my data safe when I use Aspect Ratio Calculator?
Yes. All calculations run entirely in your browser. Your data is never sent to a server, stored in a database, or shared with anyone. You can use this tool with complete confidence that your information remains private.
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