Four geography utilities in one place: great-circle distance between any two of 80 major cities, paste-anything coordinate converter, GPS-to-nearest-city lookup, and a quick driving-time estimator with rest stops.
100% Free
No Signup
Works on Mobile
Browser-side
🔒Everything runs in your browser — nothing is uploaded to a server.
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Pick two cities to see the great-circle distance.
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What “great-circle distance” means
The shortest distance between two points on a sphere is along a great circle — a circle whose plane passes through the centre of the Earth. The tool calculates that distance using the Haversine formula, which is the same approach airlines use to compute route lengths. Driving distance from the same city pair will be longer because roads bend around terrain and political borders.
Three coordinate formats, one tool
The converter accepts decimal degrees (40.7128, −74.0060), degrees-minutes-seconds(40°42'46"N 74°00'21"W) and Google Maps links. Paste any of them and the tool returns the other formats plus ready-to-share Google Maps and OpenStreetMap URLs.
When GPS lookup helps
Photos taken with location services on store coordinates in their EXIF data. Friends share “here I am” pings as raw numbers. Drone logs, GPS watches and survey equipment all output coordinates. The GPS Lookup tab tells you which major city is closest and what time zone that puts you in — useful context when the numbers alone don't mean anything.
Driving time is rarely just distance ÷ speed
For a realistic estimate, factor in rest stops every 2 hours and an average speed below the speed limit — highway with light traffic is usually 90–110 km/h average, not the 130 km/h limit. The Driving tab adds rest-stop minutes so the total reflects what you'll actually spend on the road.
Frequently asked
Questions about this tool
How is the distance between two cities calculated?
Using the Haversine formula on the great-circle distance between the two cities' latitude and longitude — the same approach airlines use. Driving distance from the same city pair will be longer because roads aren't straight.
What formats does the coordinate converter handle?
Decimal degrees (e.g. 40.7128, -74.0060), degrees-minutes-seconds (e.g. 40°42'46"N 74°00'21"W), and Google Maps share links. Paste any of them and the tool returns the others.
What does GPS lookup return?
Enter coordinates and the tool returns the nearest known city, country and IANA time zone. Useful when you're handed coordinates from a photo's EXIF or a friend's location share.
Is my location ever sent to a server?
No. All distance, coordinate and lookup logic runs in your browser against a built-in city table. Nothing about your coordinates leaves your device.