Coordinate converter: decimal degrees, DMS, DDM

Decimal degrees ⇄ DMS ⇄ DDM.

Decimal degrees

40.446111, −79.982222

40°26′46″N 79°58′56″W

Decimal degrees
Degrees, minutes, seconds
Degrees and decimal minutes
Latitude
Longitude

Click a value to copy it. Decimal degrees use minus for south and west.

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How to convert coordinates

  1. Paste or type a latitude and longitude in any common format: 40.4461, -79.9822, 40°26′46″N 79°58′56″W, N 40° 26.767′ W 79° 58.933′ or 40 26 46 N, 79 58 56 W.
  2. Read the same position in decimal degrees, degrees minutes seconds (DMS) and degrees with decimal minutes (DDM).
  3. Click any line to copy it, ready to paste into a map, a GPS unit or a spreadsheet.

Three ways to write the same place

  • Decimal degrees (DD): 40.446111, −79.982222. What most web maps and spreadsheets use; south and west are negative.
  • Degrees, minutes, seconds (DMS): 40°26′46″N 79°58′56″W. The traditional form on paper maps and in surveying. A degree has 60 minutes and a minute 60 seconds, like an hour.
  • Degrees and decimal minutes (DDM): 40°26.767′N 79°58.933′W. Common on marine and aviation GPS units and in geocaching.

Latitude is the angle north or south of the equator (−90 to 90), longitude the angle east or west of the Greenwich meridian (−180 to 180). A frequent mistake is swapping them; if a latitude comes out over 90 the converter tells you.

Size of a degree

One degree of latitude is about 111 km everywhere. A degree of longitude is 111 km at the equator and shrinks towards the poles (about 78.8 km at 45°), because the meridians meet there. To measure between two points, use the distance between coordinates calculator.