Source: EPSG:4818 — S-JTSK (Ferro)
geographic system using latitude and longitude on an ellipsoid · Area of use: Europe - Czechoslovakia
+proj=longlat +ellps=bessel +pm=ferro +towgs84=589,76,480,0,0,0,0 +no_defs +type=crsMore about EPSG:4818 →
Convert EPSG:4818 to EPSG:26912
Online coordinate converter from S-JTSK (Ferro) (EPSG:4818) to NAD83 / UTM zone 12N (EPSG:26912). Enter your source coordinates and get the result instantly. All transformations happen in your browser — no data is sent to any server.
Convert EPSG:4818 to EPSG:26912 in code
The same transformation with common GIS tools and libraries:
from pyproj import Transformer
transformer = Transformer.from_crs("EPSG:4818", "EPSG:26912", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)Target: EPSG:26912 — NAD83 / UTM zone 12N
projected system measured in linear units (typically metres) · Area of use: North America - 114°W to 108°W and NAD83 by country
+proj=utm +zone=12 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crsMore about EPSG:26912 →
Frequently asked questions
- How accurate is converting S-JTSK (Ferro) to NAD83 / UTM zone 12N?
- 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.