Map Coordinate Picker

Click on the map to find GPS coordinates. Search any address, get your current location, and convert between DD, DMS, and DDM formats.

Coordinates at Selected Location

Decimal Degrees (DD)
Click on the map
Degrees Minutes Seconds (DMS)
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Degrees Decimal Minutes (DDM)
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How to Find GPS Coordinates

1
Click on the Map
Click anywhere on the map to drop a marker. The GPS coordinates at that exact location appear in three formats instantly.
2
Or Search an Address
Type an address, landmark, or city name and press Enter. The map navigates to that location with precise coordinates.
3
Copy Coordinates
Click the Copy button next to your preferred format — Decimal Degrees (DD), DMS, or DDM. Paste into any GPS device or app.
4
Use Current Location
Click My Location to use your device's GPS. Grant permission when prompted. The map centers on your exact position.

Frequently Asked Questions

What is the difference between DD, DMS, and DDM?
DD (Decimal Degrees) uses decimal numbers: 37.7749, -122.4194. Most common in digital mapping and APIs. DMS (Degrees Minutes Seconds) uses sexagesimal notation: 37°46'29.6"N 122°25'09.9"W. Traditional navigation format. DDM (Degrees Decimal Minutes) is a hybrid: 37°46.494'N 122°25.164'W. Common in marine and aviation navigation. All three represent the same location — just different ways of writing the same latitude/longitude pair.
How accurate are the coordinates from this tool?
Coordinates picked from the map are accurate to approximately 5-10 meters, limited by the OpenStreetMap tile resolution at high zoom levels and the click precision. For most consumer uses — geotagging photos, sharing meeting points, finding hiking trailheads — this is more than sufficient. If you need survey-grade accuracy (sub-meter), you'll need professional GPS equipment with differential correction (RTK or PPK).
What coordinate system does this tool use?
This tool uses WGS 84 (World Geodetic System 1984, EPSG:4326), which is the standard datum for GPS and the coordinate system used by Google Maps, OpenStreetMap, Apple Maps, and most consumer GPS devices. WGS 84 is a global geodetic reference system — coordinates in WGS 84 are latitude/longitude pairs measured in degrees from the equator and prime meridian. Some national mapping agencies use different datums (e.g., NAD83 in North America, ETRS89 in Europe), which can differ from WGS 84 by 1-3 meters.
How do I use my current GPS location?
Click the My Location button. Your browser will ask for location permission — this is a security requirement and cannot be bypassed. Once granted, the map centers on your device's GPS position with a blue marker. This uses the W3C Geolocation API, which works on all modern browsers (Chrome, Firefox, Safari, Edge) on both desktop and mobile. On desktop, location may come from Wi-Fi triangulation rather than GPS and may be less accurate.
Can I search for any address worldwide?
Yes — the search uses Nominatim, OpenStreetMap's free geocoding service covering the entire planet. Type any place name, address, landmark, city, or natural feature. For ambiguous place names, add the country or state (e.g., "Springfield, Illinois" vs "Springfield, Oregon"). The service is free and requires no API key, but has a usage limit of 1 request per second — normal search use stays well within this limit.

What Are GPS Coordinates?

GPS (Global Positioning System) coordinates are a pair of numbers — latitude and longitude — that uniquely identify any location on Earth's surface. Latitude measures north-south position from the equator (0°) to the poles (90°N / 90°S). Longitude measures east-west position from the Prime Meridian in Greenwich, UK (0°) to the International Date Line (180°E/W). Together, they form a global grid system that allows any point on Earth to be located within meters. GPS coordinates are used in navigation, mapping, surveying, geotagging photos, location-based apps, emergency services, and countless scientific applications.

The GPS system was developed by the US Department of Defense, launching its first satellite in 1978 and achieving full operational capability in 1995. Today, the system consists of 31 active satellites orbiting at ~20,200 km altitude, each broadcasting precise timing signals. A GPS receiver triangulates its position by measuring the time delay of signals from at least 4 satellites simultaneously. Civilian GPS accuracy is typically 3-5 meters, while military-grade encrypted signals can achieve sub-meter precision. Modern smartphones combine GPS with GLONASS (Russia), Galileo (EU), and BeiDou (China) for faster, more accurate positioning.

Coordinate Format Conversion Guide

There are three common ways to write GPS coordinates, and converting between them is straightforward: