Design · free local utility
Reduce pixel dimensions to a clean ratio and calculate the missing side for a resize without stretching the image or video.
Enter the original width and height. Add a target width or target height if you also need resized dimensions.
The calculator preserves the mathematical ratio. It does not crop, resize, or inspect an actual image file.
Always verify the result in the system where you will use it. The page intentionally avoids accounts, uploads, and claims that go beyond the calculation it performs.
The width and height are divided by their greatest common divisor, so 1920 × 1080 becomes 16:9.
No. It calculates dimensions only. No image is selected or uploaded.
Original dimensions must be whole pixels. Target dimensions may include decimals.