GDA2020 and the Map Grid of Australia
GDA2020 is Australia's current datum, about 1.8 m north-east of GDA94 because the Australian plate moves about 7 cm a year. The Map Grid of Australia (MGA) is UTM on GDA2020, in zones 49 to 56 (EPSG:7849–7856). The converter was tested against more than 100 points from Geoscience Australia to the millimetre.
Frequently asked questions
What changed from MGA94 to MGA2020?
The same point has coordinates about 1.5 m larger in easting and northing in MGA2020. The converter applies the official GDA94 → GDA2020 transformation (ICSM) when you switch between them.
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