Distance Calculator
Find the straight-line (great-circle) distance between any two cities on Earth. Results in kilometres and miles using precise coordinates.
Over 150,000 cities worldwide · Real-time calculation
About Distance Calculations
The distance shown is the great-circle distance — the shortest distance between two points on the surface of a sphere (Earth). This is also called "straight-line distance" or "as the crow flies." Actual travel distance by road or air may be longer due to routing, terrain, and flight paths.
Our database includes over 150,000 cities with precise latitude and longitude coordinates. The haversine formula is used to calculate distances with high accuracy. Use our Nearby Cities tool to find cities within a specific radius, or check the Time Table to see hourly time differences between cities.
Frequently Asked Questions
What is the straight-line distance between two cities?
The straight-line distance (also called great-circle distance) is the shortest distance between two points on the surface of a sphere. It is calculated using the haversine formula based on latitude and longitude coordinates.
Is the distance shown the same as driving distance?
No. The distance shown is "straight-line distance" — the direct line through the air. Actual driving or flight distance may be longer due to roads, terrain, and flight paths.
How accurate is the distance calculator?
The calculator uses precise latitude and longitude coordinates from our database and the haversine formula, which is accurate to within a fraction of a percent for Earth distances.
How many cities are supported?
Our database covers over 150,000 cities across 250 countries and territories, with precise coordinates for accurate distance calculation.