Distance Calculator
Enter two GPS coordinates to calculate the straight-line (great-circle) distance in kilometres and miles.
100% client-side · no upload
Distance (kilometres)
Distance (miles)
How to use
- Enter the latitude and longitude for Point A (e.g. 51.5074, -0.1278 for London).
- Enter the latitude and longitude for Point B (e.g. 48.8566, 2.3522 for Paris).
- Click Calculate Distance to see the great-circle distance in km and miles.
Related geography tools
- Coordinate Converter — convert between DD, DMS, and DDM formats
- GPS Formatter — parse and normalise GPS strings
- Area Calculator — compute area of rectangles, circles, and triangles
- Timezone List — browse IANA timezones with current local time
Frequently Asked Questions
- Is this distance calculator free?
- Yes, completely free with no signup and no usage limits.
- Does my data leave my device?
- No. All calculations run in JavaScript inside your browser. No data is sent to any server.
- Does it work on mobile?
- Yes. The calculator is mobile-first and works on iPhone Safari and Android Chrome.