This section describes the geodetic datums that are currently or that have previously been used in New Zealand and information about their reference ellipsoids.

A geodetic datum is a reference system for describing positions on the curved surface of the Earth. Datum coordinates are normally expressed in degrees, minutes and seconds of latitude and longitude.

In this section you can find:

New Zealand Geodetic Datum 2000 (NZGD2000)

Ross Sea Region Geodetic Datum 2000 (RSRGD2000)

World Geodetic System 1984 (WGS84)

New Zealand Geodetic Datum 1949 (NZGD1949)

Chatham Islands Geodetic Datum 1979 (CIGD1979)

Chatham Islands Geodetic Datum 1971 (CIGD1971)

Reference ellipsoids