Free coordinate tool

Convert DMS to decimal

Transform degrees, minutes, and seconds into decimal latitude and longitude for GPS, GIS, and mapping APIs.

01

Enter DMS

Fill degrees, minutes, seconds, and hemisphere for each axis.

Deg
Min
Sec
Dir
Deg
Min
Sec
Dir
02

Result

South and west appear as negative values.

Waiting for input

Enter DMS values and convert to see decimal degrees here.

What is decimal degrees?

Decimal degrees (DD) write a location as a single number per axis. Mapping APIs, GPS devices, and GIS tools prefer this format because it is easy to store and calculate.

  • +/−
    Sign convention. Positive is north and east. Negative is south and west.
  • 6
    Precision. Six decimal places is about 0.11 meters — enough for most mapping work.
  • 90
    Ranges. Latitude runs −90° to +90°. Longitude runs −180° to +180°.

Example: 40° 42' 46" N, 74° 0' 22" W becomes 40.712778, −74.006111.