Quick guide
How to use this calculator
- Choose the example closest to your real trip, then replace its values with your own.
- Keep coordinates, distances, durations, currencies and traveler counts on the displayed basis.
- Review intermediate outputs and the model boundary before relying on the scenario.
Calculation method
Transparent travel calculation
Average Earth-centered unit vectors, then convert the vector direction to coordinates.
The calculator uses only the values shown; it does not infer a live route, fare, schedule, border rule or local price.
Worked example
Try one of three complete examples
Center three global cities.
Average Earth-centered unit vectors, then convert the vector direction to coordinates.
Supported inputs
Precision and limits
Planning boundary
Coordinate results describe an ideal mathematical or geodetic relationship. They are not road, air-traffic, maritime, cadastral or navigation instructions.
No live travel data
Routes, prices, timetables, delays, daylight, closures, entry rules and provider policies are not retrieved unless a future tool explicitly says otherwise.
Category ownership
Generic unit conversion, time-zone rules, vehicle performance, finance and sports calculations retain their established canonical pages.
Privacy
Entered coordinates, schedules, group sizes and costs remain in this browser and are not sent to analytics or third parties.