CoordiMate

MGA Coordinates Explained

MGA coordinates are metre-based Map Grid of Australia coordinates.

A complete MGA coordinate needs a datum, an MGA zone, an Easting value and a Northing value.

MGA94 uses the GDA94 datum. MGA2020 uses the GDA2020 datum, so MGA94 vs MGA2020 is really a datum and reference-frame question.

MGA coordinates Easting and Northing visual guide — Visual guide showing how to read MGA coordinates with zone, Easting, Northing, datum, MGA94 and MGA2020.

Search intents covered

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Common questions

What are MGA coordinates?

MGA coordinates are metre-based Map Grid of Australia coordinates. A full value needs a datum, an MGA zone, an Easting value and a Northing value.

How do I read an MGA coordinate?

Read the datum first, then the zone, then Easting and Northing. For example, MGA2020 Zone 55 E 320845 N 5812943 describes a projected coordinate in Zone 55.

What is the difference between MGA94 and MGA2020?

MGA94 is based on GDA94 and MGA2020 is based on GDA2020. The map grid idea is the same, but the Australian reference frame is different.