Geodetic system

The physical part of New Zealand’s geodetic system is a network of geodetic marks that are used as reference points for surveys.

We support mapping, surveying, and the use of spatial data by providing coordinate systems for New Zealand and our offshore islands, the Chatham Islands and Antarctica.

Read and download specifications, standards, guidelines, and published documents. These resources are useful for students, researchers, geodetic service contractors and professionals who use New Zealand's geodetic network.

Users may need to convert and transform coordinates between geodetic datums, projections and height systems when they combine data from different sources.