Measure Perimeter
Trace and measure outlines
Runs in your browser. Files never leave your device.
How to use Measure Perimeter
- Open an image.
- Click along the outline; click the first point again, double-click or press Enter to finish.
- Set a scale for real units, and copy the results or download the annotated image.
About this tool
Trace the outline of any shape and get its perimeter, or follow a curved route such as a river, a road on a map or a crack in a wall as an open path. Every point stays draggable so you can refine the outline.
- Works on your device. Nothing is uploaded.
- Free, with no sign-up and no watermark.
- No limits on file count or size beyond what your device can handle.
Questions and answers
How do I measure a curved line?
Choose Open path and place points close together along the curve. More points follow the curve more closely.
Do I also get the area?
Yes. A closed outline also shows the area it encloses.
Is Measure Perimeter free?
Yes. Every tool on ImgImage is free to use, with no sign-up, no watermark and no limit on how many files you process.
Are my files uploaded anywhere?
No. Your files are processed by your own browser and never leave your device. Nothing you open here is sent to a server.
Does it work on my phone?
Yes. It works in any modern browser on phones, tablets and computers. Large files are processed faster on a computer.