Haversine Flight Distance Calculator
Enter the latitude and longitude of two locations to calculate the straight-line (great-circle) distance between them using the haversine formula, along with an estimated travel time based on your chosen speed.
About this calculator
Calculate the great-circle distance between two GPS coordinates using the haversine formula, plus estimated flight time at a given cruising speed.
Frequently Asked Questions
What is the haversine formula?
The haversine formula calculates the shortest distance between two points on a sphere given their latitude and longitude, accounting for the Earth's curvature.
How accurate is this calculation?
It assumes a perfectly spherical Earth using a radius of 3,958.8 miles, so results are very close to actual great-circle distances but may differ slightly from ellipsoidal models.
Does this account for flight paths or wind?
No, this gives the theoretical shortest path distance and a simple time estimate at constant speed; actual routes and travel times may vary due to airspace, wind, and layovers.