Coordinate systems used in New Zealand

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

The geodetic system provides height information which is vital for managing water resources, assessing hazards, and carrying out large scale engineering. Several vertical datums are used to measure heights in New Zealand.

This section describes the current official New Zealand projections as well as superseded New Zealand projections.

The accuracy of coordinates and heights is indicated by a series of classifications called Orders.

The physical component of New Zealand's geodetic system is a network of survey control marks that act as physical reference points.