Developer Tools
Web UtilitiesLat/Long Coordinate Converter
Free online coordinate converter. Convert GPS coordinates between Decimal Degrees (DD), Degrees Minutes Seconds (DMS), and UTM formats instantly using the WGS84 standard.
Input Coordinates
Enter decimal degrees (e.g., 40.7128, -74.0060)
Converted Formats
Decimal Degrees (DD)
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Degrees Minutes Seconds (DMS)
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UTM Coordinates
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Coordinate Formats Reference
Decimal Degrees (DD)
Simple decimal number. Negative for South/West. Example: 40.7128, -74.006
Degrees Minutes Seconds (DMS)
Classical format with N/S/E/W. Example: 40° 42' 46" N, 74° 0' 21" W
Universal Transverse Mercator (UTM)
Grid-based metric system. Useful for navigation and mapping. Example: 18T 583960 4507523
Related Tools
About Lat/Long Coordinate Converter
How It Works
- Enter coordinates in Decimal Degrees or Degrees Minutes Seconds format
- The tool instantly converts to all three formats: DD, DMS, and UTM
- Copy any result format with a single click
- UTM conversion uses the WGS84 ellipsoid standard used by GPS systems
- Supports full range: latitude -90° to 90°, longitude -180° to 180°
Common Use Cases
- Converting GPS coordinates for mapping apps and navigation
- Entering coordinates in GIS software that requires a specific format
- Translating coordinates from printed maps (DMS) to modern GPS devices (DD)
- Calculating UTM grid references for surveying or military maps
- Validating coordinate data in geospatial datasets
Frequently Asked Questions
What is the difference between Decimal Degrees and DMS?
Decimal Degrees (DD) express latitude and longitude as a single decimal number, e.g., 40.7128. DMS (Degrees Minutes Seconds) breaks the angle into three parts: whole degrees, minutes, and seconds, e.g., 40° 42' 46" N. DD is preferred in digital systems and GPS, while DMS is traditional and still used on paper maps and in aviation.
What is UTM and when should I use it?
UTM (Universal Transverse Mercator) is a metric coordinate system that divides the Earth into 60 numbered zones. UTM is ideal for measuring distances and areas because 1 metre on the map equals 1 metre on the ground within a zone. It is widely used in surveying, military maps, and GIS.
Which WGS84 datum does this tool use?
This tool uses WGS84 (World Geodetic System 1984), the same standard used by GPS satellites and Google Maps. All conversions — DD, DMS, and UTM — are based on the WGS84 ellipsoid, so results are directly compatible with modern GPS devices and mapping software.
Why is UTM not available for polar regions?
The UTM grid covers latitudes from 80° S to 84° N. Beyond these limits, the transverse Mercator projection becomes highly distorted. If you enter coordinates outside the UTM range, this tool will indicate that UTM is not available for that location.
How do I enter negative coordinates?
In Decimal Degrees format, use a minus sign for southern latitudes and western longitudes. For example, -74.0060 means 74.006° West. In DMS format, use the direction letters N, S, E, W — for example, 74° 0' 21" W.
Can I convert DMS coordinates written with symbols like ° ' "?
Yes. The DMS parser accepts inputs with degree (°), minute ('), and second (") symbols, as well as plain space-separated numbers followed by a direction letter (N, S, E, W).
What is the valid range for latitude and longitude?
Latitude ranges from -90° (South Pole) to 90° (North Pole). Longitude ranges from -180° to 180°. The tool validates your input and shows an error if values are out of range.
How accurate is the UTM conversion?
The UTM conversion uses the full WGS84 ellipsoid parameters with a scale factor of 0.9996. Easting and northing values are accurate to within 1 millimetre for well-formed inputs, sufficient for navigation, mapping, and GIS work.
Can I use this tool for Google Maps coordinates?
Yes. Google Maps uses Decimal Degrees in WGS84. You can paste coordinates directly from Google Maps into the DD input fields, and the tool will convert them to DMS and UTM instantly.
What are UTM easting and northing?
Easting is the distance in metres east of the zone's central meridian. Northing is the distance in metres north of the equator. Together with the zone number and letter, they uniquely identify any point on Earth.
How do I find the UTM zone for my location?
UTM zones are 6° of longitude wide, numbered 1 to 60 starting at 180° W. This tool computes the zone automatically and applies the special zone rules for Norway and Svalbard.
Is my location data stored or sent anywhere?
No. All conversions happen entirely in your browser using JavaScript. No coordinate data is ever sent to a server or stored anywhere. Your location remains completely private.