Convert EPSG:2391 to EPSG:4322

Online coordinate converter from KKJ / Finland zone 1 (EPSG:2391) to WGS 72 (EPSG:4322). Enter your source coordinates and get the result instantly. All transformations happen in your browser — no data is sent to any server.

From

Input (x, y)

Output (lon, lat (decimal degrees))

Direct link to this transformation: epsgtransform.com/transform/epsg-2391-to-epsg-4322

Convert EPSG:2391 to EPSG:4322 in code

The same transformation with common GIS tools and libraries:

from pyproj import Transformer

transformer = Transformer.from_crs("EPSG:2391", "EPSG:4322", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)

Source: EPSG:2391 — KKJ / Finland zone 1

projected system measured in linear units (typically metres) · Area of use: Finland - 19.5°E to 22.5°E onshore

+proj=tmerc +lat_0=0 +lon_0=21 +k=1 +x_0=1500000 +y_0=0 +ellps=intl +towgs84=-96.062,-82.428,-121.753,4.801,0.345,-1.376,1.496 +units=m +no_defs +type=crs

More about EPSG:2391 →

Target: EPSG:4322 — WGS 72

geographic system using latitude and longitude on an ellipsoid · Area of use: World

+proj=longlat +ellps=WGS72 +no_defs +type=crs

More about EPSG:4322 →

Frequently asked questions

How accurate is converting KKJ / Finland zone 1 to WGS 72?: 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.

Need the reverse? Convert EPSG:4322 to EPSG:2391 →