Reverse Geocode
Convert GPS coordinates to location names. Enter latitude and longitude to find the nearest city, country, and region.
Offline
Fast lookups using local data. No external API calls required.
Global Coverage
Covers cities and regions worldwide with accurate results.
Distance Info
Returns distance to the nearest known location point.
Country Codes
Includes ISO country codes for easy data integration.
How Reverse Geocoding Works
Coordinate Input
Enter latitude and longitude coordinates (decimal format) or use your device's location. Coordinates are validated for proper ranges.
Spatial Search
Using a KD-tree spatial index, we efficiently find the nearest known city from our database of global locations.
Result Assembly
We return the city name, region, country, ISO codes, and distance from your coordinates to the city center.
Why Use Reverse Geocoding?
Location-based applications need to display human-readable names instead of raw coordinates. Whether you're building a maps app, fitness tracker, or photo organizer, reverse geocoding makes locations understandable.
Data enrichment transforms bare coordinates into usable information. Add city and country fields to your GPS data for filtering, grouping, and analysis.
Analytics and reporting becomes clearer when you can see "New York, USA" instead of "40.7128, -74.0060". Geographic insights are easier to communicate with location names.
Frequently Asked Questions
How accurate is reverse geocoding?
We return the nearest known city to your coordinates. For urban areas, accuracy is typically within a few kilometers. Remote locations may be matched to the nearest populated place which could be further away.
Is this offline or does it call external APIs?
Our reverse geocoding is entirely offline. We use a local database of cities and a KD-tree index for fast lookups. No external API calls are made, ensuring fast and reliable results.
What coordinate format do you support?
We accept decimal degrees format (e.g., 40.7128, -74.0060). This is the most common format used by GPS devices and mapping services. DMS (degrees, minutes, seconds) should be converted first.
Can I use my current location?
Yes! Click "Use My Location" to have your browser provide your coordinates. This requires location permission and works best on devices with GPS like smartphones.