Math & Statistics Tools
Polygon Area / Perimeter Calculator
Calculate area and perimeter of regular and irregular polygons from vertex coordinates.
Loading tool…
What is Polygon?
The shoelace formula computes polygon area from vertex coordinates. This calculator handles both regular and irregular polygons.
How it works
We apply the shoelace formula for area and sum Euclidean distances between consecutive vertices for perimeter.
- Enter your input. Type or paste your input into the field above — the tool responds instantly.
- Review the result. Output updates live as you type. Everything runs entirely in your browser.
- Copy or download. Use the Copy button to grab the result, or Download to save it as a file.
Examples
Realistic sample
Type or paste any realistic input — the tool computes the result locally and instantly.
Common mistakes
Expecting a server round-trip
Nothing is uploaded — every tool in this category runs entirely in your browser.