🌐 Coordinate Converter

Convert between decimal degrees (DD), degrees-minutes-seconds (DMS), and UTM coordinates. WGS84 ellipsoid support.

📍 Preset Locations

Latitude
Longitude

Latitude

Longitude

Conversion Result

Decimal Degrees (DD)
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Degrees Minutes Seconds (DMS)
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UTM
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Google Maps Link
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Usage and Application Examples

  • For converting GPS coordinates between DD and DMS formats
  • For converting UTM coordinates from survey data to latitude and longitude
  • Preset location buttons to instantly verify coordinates of major Japanese landmarks
  • View converted coordinates on a map using Google Maps links
  • Copy buttons to easily copy coordinates in each format to your clipboard
  • Convenient for GPS coordinate conversion in mountain climbing and outdoor activities

What is Coordinate Converter?

A coordinate converter transforms location data between three major geographic formats: decimal degrees (DD), degrees-minutes-seconds (DMS), and UTM (Universal Transverse Mercator). This tool is essential for surveyors, hikers, GIS professionals, and anyone working with GPS coordinates from multiple sources that use different notations. It ensures accuracy and consistency across mapping applications.

How to Use

Enter your coordinates in one format and choose which format to convert to. For decimal degrees, input latitude and longitude as single numbers like 35.6762, 139.6503. For DMS format, enter degrees, minutes, and seconds separately. For UTM, provide the zone number, easting, and northing values. The tool validates your input and instantly displays conversions. Copy the result and paste it into your mapping software, GPS device, or share it with colleagues. Multiple sequential conversions are fast, making batch processing of location data simple.

Use Cases

• A surveyor needs to input coordinates into CAD software but receives data from a government agency in UTM format. The converter quickly translates the UTM coordinates into decimal degrees that the CAD system expects.
• A hiking enthusiast downloads a trail from a GPS-based app that exports coordinates in DMS format, but their handheld GPS device uses decimal degrees. They use the converter to ensure their device will navigate to the correct waypoints.
• A GIS analyst is combining datasets from multiple sources: some coordinates are in DD, others in UTM, and historical records in DMS. The converter standardizes everything into a single format for analysis.
• A drone pilot needs to program waypoints for a survey mission and must convert between the UTM coordinates on their paper maps and the decimal degrees their flight software requires.

Tips & Insights

UTM is divided into 60 zones around Earth, with each zone covering 6 degrees of longitude. Decimal degrees are the most commonly used format in web mapping (Google Maps, Leaflet, Mapbox) because they're compact and precise to 7 decimal places (about 1 cm accuracy). DMS format, though older, remains standard in nautical charts and military applications. Always verify the datum: most modern tools use WGS84 (World Geodetic System 1984), which is compatible with GPS. Mismatched datums can cause errors of up to 200 meters.

Frequently Asked Questions

What is DD (Decimal Degrees) format?

DD (Decimal Degrees) is a format that expresses latitude and longitude as decimal numbers. For example, Tokyo Tower is located at 35.6586°N, 139.7454°E. It's widely used by Google Maps and other services.

What is DMS (Degrees Minutes Seconds) format?

DMS (Degrees Minutes Seconds) is a format that expresses angles in degrees (°), minutes ('), and seconds ("). For example, 35°39'31.0"N 139°44'43.4"E. It's traditionally used in maps and navigation.

What is UTM coordinate?

UTM (Universal Transverse Mercator) is a projected coordinate system that divides Earth into zones and expresses positions as X-Y coordinates in meters within each zone. It's commonly used in military maps and surveying.

What is WGS84?

WGS84 (World Geodetic System 1984) is the geodetic datum used by GPS. It's the standard coordinate reference system that defines Earth's shape and is used by almost all GPS devices and online maps.

How to convert from DD to DMS?

The integer part of the degree becomes the "degree", the integer part of the decimal part × 60 becomes the "minute", and the remaining decimal part × 60 becomes the "second". Example: 35.6586° → 35°39'31.0".

What's the difference between WGS84 and other datums?

WGS84 is the global standard used by GPS and most modern mapping systems. Other datums like NAD83 (North America) are older or region-specific and can differ by up to several hundred meters from WGS84. This tool uses WGS84, so make sure your source coordinates use the same datum for accurate conversions.

How accurate are the conversions?

Conversions are mathematically accurate to several decimal places. However, real-world accuracy depends on your equipment and the datum used. GPS typically has 5-10 meter accuracy, so coordinates are usually precise to that level. For surveying or precision engineering, professional equipment with differential GPS is recommended.

When should I use UTM coordinates instead of latitude/longitude?

UTM is better for regional mapping, measuring distances, and land surveying because it uses a flat, metric-based grid. Latitude/longitude (DD or DMS) is better for global reference and GPS systems. Choose based on your application: use UTM for detailed maps of a specific area, use lat/long for worldwide data.

What does each number mean in UTM coordinates?

UTM format is: Zone Hemisphere Easting Northing. The zone (1-60) divides the world into vertical strips. Easting is the east-west position within the zone (in meters), and Northing is the north-south position (in meters). For example, 54S 500000mE 2000000mN means zone 54 in the Southern Hemisphere.

Can I convert coordinates from a paper map?

Yes, if the map has a coordinate grid printed on it. Read the coordinates directly from the map grid, then convert them here. Make sure you know which system the map uses (UTM, lat/long, etc.) and which datum (usually WGS84 for modern maps). Older maps may use different datums, requiring additional conversion steps.

Why are my converted coordinates slightly different from online maps?

Small differences (less than 10-20 meters) can occur due to rounding in different tools or different precision levels. Ensure both tools use the same datum (WGS84). If differences are larger, verify your original coordinates are correct and check if the source uses a different datum. Precision also varies by the number of decimal places used.