Great-Circle vs Rhumb Line Distance Comparison
Compare great-circle and rhumb-line distance and bearing between two coordinates, side by side, for navigation planning.
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 both points' latitude and longitude.
- Press Calculate.
- Compare the great-circle and rhumb-line distances.
How it works
Shows the great-circle distance (shortest path) and the rhumb-line distance (constant compass bearing) between two points, plus the extra distance the rhumb line adds.
Worked example
Long route. A rhumb line is easier to steer but longer than the great circle, except along the equator or a meridian.
Frequently asked questions
Which should I use for navigation?
Great circle is shortest; rhumb line is simpler to follow with a constant heading. Long ocean/air routes use great circles split into rhumb-line legs.
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Cite this tool
Zerdly. (2026). Great-Circle vs Rhumb Line Distance Comparison. Retrieved from https://www.zerdly.com/tools/great-circle-vs-rhumb-line-distance-comparison/
Tip: Enter any known values to calculate the remaining results.
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