Aspect Ratio Calculator
Calculate aspect ratios and resize dimensions
About
This aspect ratio calculator helps you calculate and maintain aspect ratios when resizing images, videos, and other media. Enter the original dimensions and either the new width or height, and the tool will calculate the corresponding dimension to maintain the aspect ratio. ### How to Use 1. Enter or paste your data in the input field. 2. Adjust any available settings or options. 3. Click the action button to process. 4. Copy or download the result.
Try It Now
Calculate aspect ratios, convert between dimensions while maintaining ratio, and resize images with ease.
Calculate Dimensions from Ratio
Examples
Dimensions from Ratio
What is the height for a 16:9 ratio with width 1920px?
Ratio from Dimensions
What is the aspect ratio of 1024×768?
Resize with Ratio
Resize 1920×1080 to width 1280px while maintaining ratio.
Common Aspect Ratios
- • 16:9 - Widescreen video
- • 4:3 - Traditional TV
- • 21:9 - Ultrawide monitors
- • 1:1 - Square (Instagram)
Examples
Input
Original: 16:9, Width: 1920
Output
Height: 1080
Aspect ratio calculation
FAQ
What is an aspect ratio?
An aspect ratio is the proportional relationship between an image's width and height, expressed as width:height.
Can I calculate new dimensions from a given aspect ratio?
Yes, you can enter any aspect ratio and either width or height to calculate the corresponding dimension.
Is this tool free?
Yes, this tool is completely free to use.
Is my data secure?
Yes, all processing is done in your browser. Your data is not sent to any server.
Does it work offline?
Yes, once the page is loaded, you can use the tool offline.