How the Shoelace Formula Works
The Shoelace formula computes the area of a simple polygon given the coordinates of its vertices. For n vertices, the area is:
A = 0.5 * |sum(x_i * y_(i+1) - x_(i+1) * y_i)|
This calculator also computes the perimeter by summing the distance between consecutive points and converts the area into multiple units including acres, hectares, and square meters.