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Coordinate converter tutorial
How to convert latitude and longitude coordinates
This free online coordinate converter changes the notation used to describe a location without moving the location itself. Use it as a latitude and longitude converter, decimal degrees to DMS converter, UTM converter or MGRS converter. Enter DD, DMS, DDM, UTM, UPS, a UTM-region MGRS/USNG reference, a Plus Code or a Geohash to see the equivalent WGS 84 coordinates in every supported format.
How to convert coordinates
- Paste the location. Use the smart field for a coordinate pair, complete grid reference, Plus Code, Geohash or supported map URL. You can also enter latitude and longitude separately.
- Check the detected format. The label above the input identifies how the value was interpreted. If a plain numeric pair could be reversed, confirm that latitude comes first and longitude second.
- Run the conversion. Select Convert coordinates to calculate decimal degrees, DMS, DDM, UTM or UPS, Plus Code, Geohash, Web Mercator and GeoJSON results. MGRS/USNG is produced within normal UTM coverage.
- Copy the result you need. Each output has its own copy button. The precision controls change the number of displayed decimal or grid digits without claiming that the original location became more accurate.
- Convert multiple rows when needed. Batch mode can process latitude and longitude columns or a single column containing complete coordinate strings, then export CSV, GeoJSON or KML.
- Check it on the optional map. Press Load map, then click the map or drag the marker to update every coordinate format. The map engine and tiles are not requested before you choose to load them.
Coordinate formats supported by this tool
Different devices, maps and GIS programs can describe the same place in different ways. These are the formats the converter recognizes or produces.
| Format | Example | What it is commonly used for |
|---|---|---|
| Decimal degrees (DD) | 40.6892, -74.0445 | GPS devices, web maps, databases and general latitude/longitude sharing. |
| Degrees, minutes, seconds (DMS) | 40° 41′ 21.12″ N, 74° 2′ 40.20″ W | Traditional maps, navigation and coordinates written with compass hemispheres. |
| Degrees and decimal minutes (DDM) | 40° 41.3520′ N, 74° 2.6700′ W | Marine, aviation and handheld GPS workflows. |
| UTM | 18 North 580736 4504695 | Metric grid coordinates between 80°S and 84°N, divided into longitudinal zones. The full hemisphere word avoids confusion with latitude-band letters. |
| UPS | Z 2000000 1444543 | Universal Polar Stereographic coordinates north of 84°N and south of 80°S. |
| MGRS / USNG | 18T WL 80735 04695 | Compact alphanumeric grid references used in military, emergency and field mapping. This tool supports them in normal UTM coverage. |
| Plus Code | 87G7MXQ4+M6H | Open location codes that identify a small area without requiring a street address. |
| Geohash | dr5r7p4ry | Short hierarchical location codes used in databases, indexing and software projects. |
| Web Mercator | -8242596.04, 4966606.26 | Projected X/Y metres used by many online map tiles under EPSG:3857. |
| GeoJSON Point | {"type":"Point","coordinates":[-74.0445,40.6892]} | Web maps and GIS data exchange. GeoJSON places longitude before latitude. |
Common latitude and longitude conversions
Decimal degrees to DMS
To convert decimal degrees to degrees, minutes and seconds, keep the whole-number degrees, multiply the remaining decimal by 60 for minutes, then multiply the remaining minute fraction by 60 for seconds. Negative latitude becomes south and negative longitude becomes west.
DMS to decimal degrees
To convert DMS to decimal degrees, calculate degrees + minutes ÷ 60 + seconds ÷ 3,600. Apply a negative sign for south or west. The converter accepts hemisphere letters and returns a signed latitude/longitude pair.
Latitude and longitude to UTM, UPS or MGRS
UTM adds a zone, hemisphere, easting and northing for most locations. UPS covers the polar areas beyond normal UTM limits. Within UTM coverage, MGRS and USNG express a grid location as a compact alphanumeric reference; reducing the grid digits produces a larger location cell.
Plus Code or Geohash to coordinates
Plus Codes and Geohashes identify areas rather than infinitely precise points. When you decode one, this tool returns the center of its cell and can outline the cell after the optional map is loaded.
Example: decimal degrees to DMS, UTM and MGRS
The decimal coordinate 40.6892, -74.0445 identifies a point near the Statue of Liberty. On WGS 84, the same input can be displayed as 40° 41′ 21.12″ N, 74° 2′ 40.20″ W in DMS, 18 North 580736 4504695 in UTM and 18T WL 80735 04695 in MGRS/USNG at one-meter grid precision.
Those strings use different coordinate systems or notations, but they refer to the same underlying location. Small differences may appear when a format represents a cell rather than an infinitely precise point, or when an output is rounded to fewer digits.
Coordinate precision is not the same as location accuracy
Adding decimal places makes a coordinate more precise on the screen, but it cannot repair an inaccurate GPS reading, an imprecise map click or a location copied from a low-resolution source. A phone may display many digits even when its real-world position uncertainty is several metres or more.
This converter uses WGS 84 for geographic latitude and longitude. UTM is returned within its normal coverage from 80°S to 84°N, while UPS is used for the polar regions beyond those limits. Web Mercator cannot represent the poles and is therefore limited near 85.0511° north and south. For legal boundaries, cadastral work or survey-grade datum transformations, use authoritative surveying data and specialist geodetic software.
Coordinate systems and standards used here
The converter follows the normal definitions of WGS 84 latitude/longitude and the named grid or interchange formats. These primary references are useful when a workflow needs more detail than a quick conversion:
- National Geospatial-Intelligence Agency coordinate-system guidance for UTM, UPS, MGRS and USNG.
- RFC 7946, The GeoJSON Format, including longitude-first coordinate order for GeoJSON positions.
- The Open Location Code project, which defines the Plus Code format.
This educational tool converts and reformats coordinates; it does not replace authoritative control points, datum grids, coordinate epochs or survey-grade transformation software.
Need a publication-ready country map instead? Use GeographyPin’s free world map maker to highlight countries and export a finished map.
Coordinate converter FAQ
Quick answers to common questions about coordinate order, supported formats, WGS 84, browser compatibility and batch conversion.
What order should latitude and longitude use?
This tool expects latitude first and longitude second for ordinary coordinate pairs. Latitude ranges from −90 to 90; longitude ranges from −180 to 180. GeoJSON is the important exception because its coordinate array uses longitude first.
Can I convert decimal degrees to DMS?
Yes. Enter a pair such as 40.6892, -74.0445 and copy the DMS result. The converter also produces DDM, UTM or UPS, Plus Code, Geohash, Web Mercator and GeoJSON outputs. MGRS/USNG output is available for locations within normal UTM coverage.
Does the converter use WGS 84?
Yes. Geographic results use WGS 84, the reference system commonly used by GPS. The tool does not claim to perform survey-grade transformations from historical or local datums that may require correction grids or coordinate epochs.
What is the difference between UTM and UPS?
UTM divides most of the world into 60 longitudinal zones. UPS uses a polar stereographic projection for the areas north of 84°N and south of 80°S, where ordinary UTM zones no longer apply.
Are my coordinates uploaded?
Coordinate calculations and batch-file conversion run in the browser. Recent history is off until a visitor opts in, and turning it off deletes saved history from that device. Loading the optional map contacts the configured map provider, and optional address search sends only the place text deliberately submitted to the configured geocoding provider.
Can I convert a CSV file?
Yes. Open Batch converter, paste CSV or TSV data or select a local file, map the coordinate columns and download CSV, GeoJSON or KML. The file is processed locally and valid rows are kept even when other rows contain errors.
Can I paste a Google Maps or Bing Maps link?
Yes. Paste a supported Google Maps, Bing Maps or OpenStreetMap URL into the main field. The converter extracts the latitude and longitude when the link contains a recognizable coordinate pair.
What should I do if the coordinate converter does not load?
Enable JavaScript and try the latest version of Chrome, Edge, Firefox or Safari. Very old Android browsers, Opera Mini and some embedded in-app browsers may be unsupported. If only the optional map fails, conversion still works and you can try a supported browser with WebGL enabled.
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