Coordinate boundary measurement
Polygon Perimeter Calculator
Calculate a closed polygon perimeter from ordered X,Y points and inspect every edge so a bad coordinate can be spotted before the total is used for estimating.
Polygon coordinates
Enter three or more polygon points.
Perimeter from coordinate points
Each consecutive coordinate pair forms one boundary edge. The final point is automatically connected to the first to create a closed polygon.
Edge length = √((x₂ − x₁)² + (y₂ − y₁)²)
Why show each edge?
A total alone can conceal a typo. Edge-by-edge reporting lets you check unusual jumps in the entered boundary.
Coordinate order
Enter points around the perimeter in order. The calculator does not reorder points.
Frequently Asked Questions
Does it include the closing edge?
Yes.
Can negative coordinates be used?
Yes.
Can this calculate 3D perimeter?
No. It is a planar X,Y calculation.