EPSG:31983 · Americas
SIRGAS 2000 / UTM Zone 23S to KML & KMZ
Convert SIRGAS 2000 / UTM Zone 23S eastings and northings to latitude and longitude, and save them as a Google Earth KML or KMZ. Try a single point here, or convert a whole spreadsheet in the web app.
- Converter already set to EPSG:31983
- Datum shift to WGS 84 applied automatically
- Whole sheets with photos and boundaries in the web or Windows app
About SIRGAS 2000 / UTM Zone 23S
SIRGAS 2000 / UTM zone 23S covers 48°W to 42°W in the southern hemisphere on Brazil's official SIRGAS 2000 datum, which is treated as WGS 84 for Google Earth work.
Where it's used: São Paulo, Rio de Janeiro, Belo Horizonte and Brasília.
Convert a whole spreadsheet
- Open the web app or the Windows app, and paste your rows from Excel or open a CSV file.
- Under Coordinate system, search for “31983” and pick SIRGAS 2000 / UTM zone 23S.
- Check one point you know on the map, then press Save KML or Save KMZ (with photos) and open it in Google Earth.
Check points for SIRGAS 2000 / UTM Zone 23S
Five points inside the area of use of SIRGAS 2000 / UTM Zone 23S, with their latitude and longitude on WGS 84 and their easting and northing in this grid (metres). Enter an easting and northing in the converter above: you should get the latitude and longitude shown, to a few centimetres.
| Point | Latitude | Longitude | Easting | Northing |
|---|---|---|---|---|
| Middle of the area of use | 14.18500° S | 45.00000° W | 500,000.00 | 8,431,813.46 |
| Towards the north-west | 2.59600° S | 46.80000° W | 299,876.24 | 9,712,919.61 |
| Towards the north-east | 2.59600° S | 43.20000° W | 700,123.76 | 9,712,919.61 |
| Towards the south-west | 25.77400° S | 46.80000° W | 319,498.32 | 7,148,110.71 |
| Towards the south-east | 25.77400° S | 43.20000° W | 680,501.68 | 7,148,110.71 |
Common mistakes with SIRGAS 2000 / UTM Zone 23S
- Easting and northing swapped. In SIRGAS 2000 / UTM Zone 23S the middle of the grid is near easting 500,000.00 and northing 8,431,813.46. If your easting column holds numbers like 8,431,813.46, the columns are the wrong way round and every point lands far away: swap them before converting.
- Feet entered as metres. SIRGAS 2000 / UTM Zone 23S is in metres. Coordinates copied from a drawing in feet must be converted first, or every point moves outwards from the grid's origin.
- Forgetting the datum. SIRGAS 2000 / UTM Zone 23S is not on WGS 84: treated as WGS 84, no shift (the datums agree to about a metre or better). Picking a WGS 84 grid with the same projection instead leaves the points off by that amount.
- Points outside the grid's area. SIRGAS 2000 / UTM Zone 23S is meant for Brazil - between 48°W and 42°W, northern and southern hemispheres, onshore and offshore. Points well outside that area convert with growing error; the converter flags them so you can choose the right grid.
- A local site grid. If every point is off by the same distance and direction, the drawing may be on a local site grid. Calibrate on three or more known control points instead.
Before you rely on it
Older Brazilian data may be on SAD69 or Córrego Alegre, which differ from SIRGAS 2000 by tens of metres. Always check one known control point before sending a file out.