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Learn how to convert geographic coordinates among different units, formats, systems and datums. Find formulas, methods and examples for latitude and longitude conversion.
Decimal degrees (DD) is a notation for expressing latitude and longitude coordinates as decimal fractions of a degree. Learn how to convert DD to DMS notation, the precision of DD, and the examples of DD in geographic information systems and web mapping applications.
ISO 6709 is the international standard for representing latitude, longitude and altitude for geographic points. It defines the order, sign, units, display and encoding of coordinates, and the identification of coordinate reference systems.
Learn how to obtain and add geographic coordinates to Wikipedia articles from various sources, such as maps, online services, directories, databases and calculators. Find out the preferred geotagging templates and the licensing information for different tools.
Learn how to measure and communicate positions on Earth using latitude and longitude, and how different geodetic datums affect the coordinates. Explore the history and standards of the geographic coordinate system and its applications in cartography and geodesy.
Latitude is a coordinate that specifies the north-south position of a point on the surface of the Earth or another celestial body. Learn how latitude is defined on a sphere, an ellipsoid and a plane, and how it is measured with different methods and instruments.
Longitude is a geographic coordinate that specifies the east-west position of a point on the surface of the Earth or another celestial body. Learn about the ancient and modern concepts, methods and challenges of measuring longitude, and the role of time, eclipses, telescopes and clocks.
Degrees, minutes and seconds, when used, must each be separated by a pipe ("|"). Map datum must be WGS84 if possible (except for off-Earth bodies). Avoid excessive precision (0.0001° is <11 m, 1″ is <31 m). Maintain consistency of decimal places or minutes/seconds between latitude and longitude. Latitude (N/S) must appear before longitude (E/W).