Convert EPSG:30172 to EPSG:4269

Online coordinate converter from Tokyo / Japan Plane Rectangular CS XII (EPSG:30172) to NAD83 (EPSG:4269). 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-30172-to-epsg-4269

Convert EPSG:30172 to EPSG:4269 in code

The same transformation with common GIS tools and libraries:

from pyproj import Transformer

transformer = Transformer.from_crs("EPSG:30172", "EPSG:4269", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)

Source: EPSG:30172 — Tokyo / Japan Plane Rectangular CS XII

projected system measured in linear units (typically metres) · Area of use: Japan - zone XII

+proj=tmerc +lat_0=44 +lon_0=142.25 +k=0.9999 +x_0=0 +y_0=0 +ellps=bessel +units=m +no_defs +type=crs

More about EPSG:30172 →

Target: EPSG:4269 — NAD83

geographic system using latitude and longitude on an ellipsoid · Area of use: North America - NAD83

+proj=longlat +datum=NAD83 +no_defs +type=crs

More about EPSG:4269 →

Frequently asked questions

How accurate is converting Tokyo / Japan Plane Rectangular CS XII to NAD83?: 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:4269 to EPSG:30172 →