Polygon Closure Error Calculator

Polygon closure error measures the accuracy of a closed traverse by checking linear and angular discrepancies.

Enter all sides (distances) and internal angles in the order of the polygon points. Optionally, add station names to label points. Number of sides, angles, and stations should match.

The calculator provides angular closure error, linear closure error (misclosure), and a status indicating if the polygon closes correctly.

1. Enter polygon name (optional).
2. Enter sides, angles, and optional stations.
3. Select distance unit.
4. Click “Calculate Closure Errors” to see results.