Online coordinate converter from WGS 84 / Pseudo-Mercator (EPSG:3857) to NAD83 / BLM 13N (ftUS) (EPSG:4433). 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:3857", "EPSG:4433", 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: World - 85°S to 85°N
+proj=merc +a=6378137 +b=6378137 +lat_ts=0 +lon_0=0 +x_0=0 +y_0=0 +k=1 +units=m +nadgrids=@null +wktext +no_defs +type=crsMore about EPSG:3857 →
projected system measured in linear units (typically metres) · Area of use: USA - 108°W to 102°W
+proj=tmerc +lat_0=0 +lon_0=-105 +k=0.9996 +x_0=500000.001016002 +y_0=0 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=us-ft +no_defs +type=crsMore about EPSG:4433 →