Source: EPSG:4326 — WGS 84
geographic system using latitude and longitude on an ellipsoid · Area of use: World (by country)
+proj=longlat +datum=WGS84 +no_defs +type=crsMore about EPSG:4326 →
Convert EPSG:4326 to EPSG:3031
Online coordinate converter from WGS 84 (EPSG:4326) to WGS 84 / Antarctic Polar Stereographic (EPSG:3031). Enter your source coordinates and get the result instantly. All transformations happen in your browser — no data is sent to any server.
About converting WGS 84 to WGS 84 / Antarctic Polar Stereographic
Converting from WGS 84 (EPSG:4326) to Antarctic Polar Stereographic (EPSG:3031) is the standard projection for almost every map of Antarctica — the Antarctic Digital Database, BAS, USGS Antarctic Resource, and ice-sheet research datasets.
The projection is true at 71°S, central meridian 0°E. It is conformal, preserving local angles and shape, but distorts area at the periphery. For area-based analysis prefer EPSG:9354 (LAEA Antarctic) or EPSG:6932 (EASE-Grid 2.0 South).
Why people convert EPSG:4326 to EPSG:3031
- Antarctic Digital Database (ADD) integration
- British Antarctic Survey and USGS Antarctic mapping
- Ice-sheet research and remote sensing
- SCAR and treaty-related Antarctic data products
Convert EPSG:4326 to EPSG:3031 in code
The same transformation with common GIS tools and libraries:
from pyproj import Transformer
transformer = Transformer.from_crs("EPSG:4326", "EPSG:3031", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)Target: EPSG:3031 — WGS 84 / Antarctic Polar Stereographic
projected system measured in linear units (typically metres) · Area of use: Antarctica
+proj=stere +lat_0=-90 +lat_ts=-71 +lon_0=0 +x_0=0 +y_0=0 +datum=WGS84 +units=m +no_defs +type=crsMore about EPSG:3031 →
Frequently asked questions
- Why is EPSG:3031 true at 71°S, not the South Pole?
- Polar Stereographic is exact only at the latitude of true scale and progressively distorts away from it. Setting it at 71°S balances distortion across the Antarctic continent.
- How accurate is converting WGS 84 to WGS 84 / Antarctic Polar Stereographic?
- Projection-only conversions are accurate to floating-point precision. If a datum shift is involved, browser-based tools use Helmert parameters which are accurate to roughly 1-5 m; for surveying-grade work apply the official grid-shift transformation in a desktop GIS.
- Does my data leave the browser when I use this converter?
- No. All coordinate transformations are computed locally in your browser using proj4js. The coordinates you enter are never transmitted to any server.