Purpose-built tool
Enter positive pixel width and height to get the simplified ratio and width divided by height.
Aspect Ratio Calculator
Enter positive pixel width and height to get the simplified ratio and width divided by height. Everything runs locally on your device.
Private by designRuns locally in browserNo signup needed
No images selected. Files stay on your device.
Processed
Your images never leave your computer.
Image Well Done executes all image algorithms inside your browser memory. We never transmit your image bytes, metadata, or filenames to a remote server.
How to use Aspect Ratio Calculator
- 1Enter a positive width and height in pixels; no image is needed.
- 2Adjust the labeled controls and check the preview. Aspect ratio.
- 3Calculate the width-to-height ratio. 1920 × 1080 reduces to 16:9; the decimal ratio is width divided by height.
Browser-local processing
Your input is processed on your device, without uploading it to an image-processing server.
No account required
Open the tool and use it without signing up.
Frequently Asked Questions
What input and result does this tool support?
Calculate the width-to-height ratio. 1920 × 1080 reduces to 16:9; the decimal ratio is width divided by height.
Is my input uploaded?
No. Processing happens in your browser; your input is not sent to an image-processing server.