Convert Coordinates
Convert between all major coordinate formats instantly - Decimal Degrees, DMS, UTM, MGRS, and Plus Code.
Paste anything. Get every format.
DD, DMS, UTM, MGRS, Plus Code, UN/LOCODE - converted instantly.
Understanding Coordinate Formats
Geographic coordinates describe locations on Earth, but they come in many different formats - each designed for specific use cases. Whether you are working with satellite imagery, hiking with a topographic map, or integrating location data into software, you will encounter different coordinate systems.
Common Coordinate Formats
Decimal Degrees (DD) are the most universal format,
used by Google Maps, GPS devices, and virtually every web mapping
API. A DD coordinate looks like 51.5074, -0.1278.
Degrees, Minutes, Seconds (DMS) is the traditional
notation used in aviation, nautical charts, and printed maps.
Example: 51°30'26.6"N 0°7'40.1"W.
Universal Transverse Mercator (UTM) projects
coordinates onto a flat grid measured in meters, making it ideal for
surveying, military operations, and GIS analysis. Example:
30U 699375 5710148.
Military Grid Reference System (MGRS) builds on UTM
to provide compact, unambiguous grid references used by NATO forces
worldwide. Example: 30UXC9937510148.
Google Plus Codes (Open Location Codes) encode
locations into short alphanumeric strings designed for areas without
street addresses. Example: 9C3XGWM5+XX.
Which Format Should I Use?
The right coordinate format depends on your application:
- Sharing locations online or in apps - use Decimal Degrees
- Aviation or nautical navigation - use DMS
- Surveying, engineering, or field work - use UTM
- Military or NATO operations - use MGRS
- Addressing locations without formal addresses - use Plus Codes
Why Coordinate Conversion Matters
In practice, you will frequently need to convert between formats. A surveyor sends UTM coordinates that your web app needs in decimal degrees. A military report uses MGRS that you need to plot on Google Maps. A field team provides Plus Codes that your GIS database expects as lat/long. This converter handles all these transformations instantly - paste any format and get every other format in return.
Frequently Asked Questions
What are the most common coordinate formats?
The most common formats are Decimal Degrees (DD), Degrees Minutes Seconds (DMS), Universal Transverse Mercator (UTM), Military Grid Reference System (MGRS), and Google Plus Codes (Open Location Codes). Each is designed for different use cases - from web maps to military operations.
Which coordinate format should I use?
Use Decimal Degrees for web maps and GPS devices, DMS for aviation or nautical navigation, UTM for surveying and engineering, MGRS for military operations, and Plus Codes for sharing locations in areas without formal addresses.
How accurate is online coordinate conversion?
Coordinate conversions between DD, DMS, UTM, and MGRS are mathematically exact transformations - no precision is lost. The accuracy of the output depends entirely on the precision of your input. This converter supports 4 to 10 decimal places of output precision.
Can I convert coordinates in bulk?
This web converter handles one coordinate at a time for instant results. For bulk conversions, Unlocoder offers a REST API that you can integrate into your applications.