Station Chainage & Offset Calculator
Converts centreline chainage and offset into easting and northing for setout work.
Enter Values
Before you rely on this: First-pass guide only. Verify safety-critical or regulated work against the relevant standards, your project requirements and a qualified professional.
How to use this calculator
- Enter the line start coordinate and bearing.
- Enter the chainage along the line and the offset (+ = right).
- Press Calculate for the point coordinate.
How it works
Sets out a point from a chainage along a line plus a perpendicular offset; a positive offset is to the right of the bearing direction.
Worked example
120 m chainage, 5 m right. Returns the easting/northing of the offset peg.
Frequently asked questions
Which way is a positive offset?
To the right when facing along the increasing-chainage direction of the line.
Related tools
- Bearing & Distance to Coordinates Calculator
- Coordinate Offset Calculator
- Area by Coordinates Worksheet
- Bowditch Adjustment Calculator
- Coordinates to Bearing & Distance Calculator
- Easting/Northing Distance Calculator
Explore more in Surveying, Coordinates, GIS & CAD.
Cite this tool
Zerdly. (2026). Station Chainage & Offset Calculator. Retrieved from https://www.zerdly.com/tools/station-chainage-offset-calculator/
Tip: Enter any known values to calculate the remaining results.
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