Online coordinate converter from GSK-2011 / Gauss-Kruger CM 177W (EPSG:21031) to WGS 84 / World Mercator (EPSG:3395). Enter your source coordinates and get the result instantly. All transformations happen in your browser — no data is sent to any server.
The same transformation with common GIS tools and libraries:
from pyproj import Transformer
transformer = Transformer.from_crs("EPSG:21031", "EPSG:3395", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)projected system measured in linear units (typically metres) · Area of use: Russia - 180° to 174°W onshore
+proj=tmerc +lat_0=0 +lon_0=-177 +k=1 +x_0=500000 +y_0=0 +ellps=GSK2011 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crsMore about EPSG:21031 →
projected system measured in linear units (typically metres) · Area of use: World - between 80°S and 84°N
+proj=merc +lon_0=0 +k=1 +x_0=0 +y_0=0 +datum=WGS84 +units=m +no_defs +type=crsMore about EPSG:3395 →