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Convert EPSG:7991 to EPSG:7789

Online coordinate converter from NAD27 / MTM zone 10 (EPSG:7991) to ITRF2014 (EPSG:7789). Enter your source coordinates and get the result instantly. All transformations happen in your browser — no data is sent to any server.

Direct link to this transformation: epsgtransform.com/transform/epsg-7991-to-epsg-7789

Convert EPSG:7991 to EPSG:7789 in code

The same transformation with common GIS tools and libraries:

from pyproj import Transformer

transformer = Transformer.from_crs("EPSG:7991", "EPSG:7789", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)

Source: EPSG:7991 — NAD27 / MTM zone 10

projected system measured in linear units (typically metres) · Area of use: Canada - Ontario - MTM zone 10

+proj=tmerc +lat_0=0 +lon_0=-79.5 +k=0.9999 +x_0=304800 +y_0=0 +datum=NAD27 +units=m +no_defs +type=crs
More about EPSG:7991 →

Target: EPSG:7789 — ITRF2014

geocentric Cartesian system (Earth-centred Earth-fixed) · Area of use: World

+proj=geocent +ellps=GRS80 +units=m +no_defs +type=crs
More about EPSG:7789 →

Frequently asked questions

How accurate is converting NAD27 / MTM zone 10 to ITRF2014?
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:7789 to EPSG:7991 →