Source: EPSG:4978 — WGS 84
geocentric Cartesian system (Earth-centred Earth-fixed) · Area of use: World
+proj=geocent +datum=WGS84 +units=m +no_defs +type=crsMore about EPSG:4978 →
Convert EPSG:4978 to EPSG:3321
Online coordinate converter from WGS 84 (EPSG:4978) to IGC 1962 / Congo TM zone 18 (EPSG:3321). Enter your source coordinates and get the result instantly. All transformations happen in your browser — no data is sent to any server.
Convert EPSG:4978 to EPSG:3321 in code
The same transformation with common GIS tools and libraries:
from pyproj import Transformer
transformer = Transformer.from_crs("EPSG:4978", "EPSG:3321", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)Target: EPSG:3321 — IGC 1962 / Congo TM zone 18
projected system measured in linear units (typically metres) · Area of use: Congo DR (Zaire) - 6th parallel south 17°E to 19°E
+proj=tmerc +lat_0=0 +lon_0=18 +k=0.9999 +x_0=500000 +y_0=10000000 +a=6378249.145 +rf=293.465 +units=m +no_defs +type=crsMore about EPSG:3321 →
Frequently asked questions
- How accurate is converting WGS 84 to IGC 1962 / Congo TM zone 18?
- 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.