Survey calculation workspace
COGO Calculator.
Work from coordinates, bearings, and distances with a transparent field worksheet. All calculations run locally in this browser.
Grid coordinates are used directly. Use one consistent project grid and unit.
Coordinate by bearing and distance
Forward calculation
Calculate an end point from a known coordinate, direction, and horizontal distance.
Bearing and distance between two points
Inverse calculation
Calculate direction, distance, and coordinate deltas between known points.
Direction conversion
Bearing converter
Convert between quadrant bearings, DMS azimuths, and decimal-degree azimuths.
Course entry and closure check
Traverse worksheet
Enter successive courses, review closure, then apply an optional Bowditch adjustment.
| Course | Direction | Distance | Notes | Remove |
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Calculation note
Latitude/longitude input is converted locally to the selected WGS84 UTM grid before calculating. Select the project UTM zone and hemisphere carefully. Use the correct coordinate reference system, datum, distance unit, ground-to-grid factor, and direction basis for your project. This page calculates planar horizontal COGO values and does not replace professional survey review.