Roads and measurements
Area and perimeter from coordinates
Formulas
S = ½ |Σ (Xᵢ Yᵢ₊₁ − Xᵢ₊₁ Yᵢ)| (formule de Gauss / lacet)
P = Σ √((Xᵢ₊₁ − Xᵢ)² + (Yᵢ₊₁ − Yᵢ)²)
Assumptions
- Plane (projected) coordinates; the polygon is closed automatically and must not self-intersect.
Area and perimeter from coordinates
Fill in the inputs and run the calculation: results and every intermediate step will appear here.
These tools provide estimates and calculation aids. They are neither design calculations nor an engineering approval: any design or safety decision must be checked by a qualified professional against the applicable standards.