GEOGRAPHY & CARTOGRAPHY CALCULATOR
P
A precise tool.
What is the P & How does it work?
The surface of the Earth can be approximated as a sphere, allowing us to measure the shortest path between two pointsβknown as the greatβcircle distance.
For coordinates given in latitude (Ο) and longitude (Ξ»), the haversine formula provides an accurate way to compute this distance while accounting for the Earth’s curvature.
d = 2R\arcsin\left(\sqrt{\sin^{2}\left(\frac{\Delta\phi}{2}\right) + \cos\phi_{1}\cos\phi_{2}\sin^{2}\left(\frac{\Delta\lambda}{2}\right)}\right)
R = Earth’s mean radius (β6371 km)
The result is expressed in the same unit as the radius; using kilometres yields distances suitable for travel planning, logistics, and spatial analysis.
Parameters
Result
β
Frequently Asked Questions
What is the great-circle distance?
The great-circle distance is the shortest path between two points on the surface of a sphere, like the Earth.
How does the haversine formula work?
The haversine formula calculates the great-circle distance by accounting for the Earth’s curvature using latitude and longitude coordinates.
What is R in the haversine formula?
R represents the radius of the Earth, which is approximately 6,371 kilometers.
Can this calculator be used for any two points on Earth?
Yes, as long as you have the latitude and longitude coordinates for both points.
What units does the distance output in?
The distance is typically calculated in kilometers, but can be adjusted to other units like miles if needed.
How accurate is this calculation?
This method is highly accurate for most purposes, especially over relatively short distances on the Earth’s surface.
Can I use this formula for navigation?
Yes, it is commonly used in navigation to determine the shortest path between two locations.
Results are for informational purposes only and do not constitute professional advice.