MGA2020 / GDA2020 Converter (Australia)
Convert between GDA2020 latitude/longitude and MGA2020 zone, easting and northing for Australian surveying.
Geographic coordinates are GDA2020 (EPSG:7844). Grid coordinates are GDA2020 / MGA zone z (EPSG:7846–7859), in metres. No datum transformation is applied. A GPS position in WGS84 or ITRF is not GDA2020 — the two drift apart by about 7 cm a year — and converting between them is a separate, epoch-dependent step this tool does not perform.
- Zone
- 50 · EPSG:7850
- Easting
- 392259.362 m
- Northing
- 6464539.164 m
What this tool covers
Zones 46 to 59, within latitude -60.55 to -8.47 and longitude 93.41 to 173.34 degrees. That rectangle is an envelope, not a statement that a point inside it is in Australia, on land, or suitable for survey use. Positions outside it are refused rather than answered.
Not included in this tool: datum transformation to or from WGS84, ITRF or GDA94; height conversion; local mine or site grids; and grid-to-ground scaling.
Before you rely on this: First-pass guide only. Verify safety-critical or regulated work against the relevant standards, your project requirements and a qualified professional.
How to use this calculator
- Pick the direction (lat/long ⇄ MGA grid).
- Enter WGS84 coordinates, or the MGA zone plus easting/northing.
- Press Convert — the zone is set automatically from the longitude.
How it works
Converts between WGS84 (≈ GDA2020) latitude/longitude and MGA2020 grid coordinates — UTM on the GRS80 ellipsoid, southern hemisphere.
The Map Grid of Australia zone is derived from the longitude; mainland Australia spans zones 49–56.
Worked example
Perth (−31.95, 115.86). Falls in MGA zone 50, around 402,000 m E, 6,464,000 m N.
Frequently asked questions
Is GDA2020 the same as WGS84?
They are very close (within a few centimetres for most uses), so WGS84 GPS coordinates work well here. GDA94 differs by ~1.8 m and needs a separate shift.
Related tools
- Lat/Long to UTM Converter (WGS84)
- UTM Zone Finder from Coordinates
- British National Grid (OSGB36) Converter
- Irish Grid / ITM Converter
- RGF93 / Lambert-93 Converter (France)
- Swiss LV95 / LV03 Converter
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Cite this tool
Zerdly. (2026). MGA2020 / GDA2020 Converter (Australia). Retrieved from https://www.zerdly.com/tools/mga2020-gda2020-zone-helper-australia/
Tip: Enter any known values to calculate the remaining results.
Designed to run locally in your browser. Tool inputs are not intentionally stored by Zerdly unless stated otherwise.