Station chainage conversion calculator

Calculate containing segment and offset into segment with your own figures.

Your numbers

Use the units shown. Results update as you change valid inputs.

Use containing segment and offset into segment to compare changes to your inputs. The method and limits below explain the scope.

Examples

Examples

Try the starting example

Sequential alignment segment lengths (m)
100,150,80
Station origin (m)
1000
Queried chainage (m)
1180
Containing segment (1-based)
2
Offset into segment (m)
80
Total alignment length (m)
330

Try another scenario

Sequential alignment segment lengths (m)
101.0,150.0,80.0
Station origin (m)
1000
Queried chainage (m)
1180
Containing segment (1-based)
2
Offset into segment (m)
79
Total alignment length (m)
331
Calculation method

Calculation method

Containing segment (1-based)

Subtract station origin, accumulate segment lengths; boundary belongs to preceding segment.

Offset into segment (m)

Subtract station origin, accumulate segment lengths; boundary belongs to preceding segment.

Total alignment length (m)

Subtract station origin, accumulate segment lengths; boundary belongs to preceding segment.

Symbols and units
a
Sequential alignment segment lengths (m)
b
Station origin (m)
c
Queried chainage (m)

Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.

Assumptions & limits

Assumptions & limits

  • Calculation uses the entered values and stated mathematical model; quantities must use the labelled units. Supported limits: All required fields must be finite values of the exact declared type and within displayed bounds. Lists contain1–1000 finite numbers. JSON tables are numeric rectangular rows, at most100 rows and30 columns; individual tools have stricter shape/domain constraints. Subtract station origin, accumulate segment lengths; boundary belongs to preceding segment.
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