NZ Map Reference Converter Download

This page contains information on how to download the New Zealand Map Reference Converter (NZMapConv) software.


New Zealand Map Reference Converter (NZMapConv) is software that LINZ provides to convert map references between the old NZMS260 map series and the new NZTopo50 map series.

It can also be used for converting between New Zealand Map Grid (NZMG), New Zealand Transverse Mercator 2000 (NZTM2000), and latitude and longitude in terms of the New Zealand Geodetic Datum 1949 (NZGD1949) and the New Zealand Geodetic Datum 2000 (NZGD2000).

NZMapConv is a Windows programme designed to convert individual coordinates entered manually. It does not provide any facility for converting coordinates in files. If you need to convert batches of coordinates you can use the online coordinate converter, or, for NZMG, NZTM2000, and the latitude/longitude coordinate systems, you can download the CONCORD coordinate conversion programme.

NZMapConv screenshot

Screenshot of the NZMapConv programme

Important version update (1 October 2009)

If you downloaded the NZMapConv software before 1 October 2009, please ensure you delete it and replace it with the latest version as this contains an important update and calculation corrections.

To check the version you are using click on the icon 

Program icon

 on the top left of the window and select "About ..." from the drop down menu. A dialogue box will open that displays the software version number. You should be using version 1.0.13 or later. If not, please download and install the software as explained below.


Download and use of this software application is taken to be acceptance of the following conditions.

  • Land Information New Zealand (LINZ) does not offer any support for this software.
  • The software is provided "as is" and without warranty of any kind. In no event shall LINZ be liable for loss of any kind whatsoever with respect to the download, installation and use of the software.
  • The software is designed to work with MS Windows. However, LINZ makes no warranty regarding the performance or non-performance of the software on any particular system or system configuration.

To install the programme, download the file and extract and install the nzmapconv_install.msi file.

nz-map-conv_20090930 (ZIP 2.4MB)

Programme updates

30 September 2009

Updated to fix an error in converting coordinates from Topo50 map references to other coordinate systems for some map references.