pyproj4/pyproj

Python interface to PROJ (cartographic projections and coordinate transformations library)

Python

1,231

1,265 commits

updated Oct 12, 2026

pyproj4.github.io/pyproj

See the code

README

pyproj

Python interface to PROJ (cartographic projections and coordinate transformations library).

Documentation

Stable: http://pyproj4.github.io/pyproj/stable/
Latest: https://pyproj4.github.io/pyproj/latest/

Bugs/Questions

Report bugs/feature requests: https://github.com/pyproj4/pyproj/issues
Ask questions: https://github.com/pyproj4/pyproj/discussions
Ask the GIS community: https://gis.stackexchange.com/questions/tagged/pyproj

Contributors ✨

Thanks goes to these wonderful people (emoji key):

_{Jeff Whitaker} 📖 ⚠️ 💻 💡 🤔 👀 💬 🚧 🚇 🐛	_{Alan D. Snow} 📖 ⚠️ 💻 💡 🚧 🚇 🤔 👀 💬 🐛	_{Micah Cochran} 📖 ⚠️ 💻 🚧 🚇 👀 💬 🐛	_{Joris Van den Bossche} 📖 💻 🤔 👀 💬 🐛 ⚠️	_{Chris Mayo} ⚠️	_{Charles Karney} 💻 ⚠️	_{Justin Dearing} 🚇
_{Jos de Kloe} 💻 ⚠️ 🐛	_{George Ouzounoudis} 💻 🤔	_{David Hoese} 👀 🤔 📦 📖 ⚠️ 💻	_{Mikhail Itkin} 💻	_{Ryan May} 💻	_artttt 🤔	_Filipe 🚇 💻 📦 📖
_Heitor 📖	_{Bas Couwenberg} 💻 📦 ⚠️	_{Nick Eubank} 💻	_{Michael Dunphy} 📖	_{Matthew Brett} 🚇 📦	_{Jakob de Maeyer} 💻	_{The Gitter Badger} 📖
_{Bernhard M. Wiedemann} 💻	_{Marco Aurélio da Costa} 💻	_{Christopher H. Barker} 💻	_{Kristian Evers} 💬 🤔 📖	_{Even Rouault} 💬	_{Christoph Gohlke} 📦 💬 🐛 ⚠️	_{Chris Willoughby} 💻
_{Guillaume Lostis} 📖	_{Eduard Popov} 📖	_{Joe Ranalli} 🐛 💻 ⚠️	_{Greg Berardinelli} 🐛 💻 🤔 ⚠️	_{Martin Raspaud} 🐛 💻 ⚠️ 🤔	_{Mike Taves} ⚠️	_{David Haberthür} 📖
_mmodenesi 🐛 💻 ⚠️	_jacob-indigo 🐛 💻	_{Poruri Sai Rahul} ⚠️	_{Yann-Sebastien Tremblay-Johnston} 📖	_odidev 📦	_{Idan Miara} 💻 📖 💡 ⚠️	_{Brendan Jurd} 📖 🎨
_{Bill Little} 📖	_{Gerrit Holl} 📖	_{Kirill Kouzoubov} 💻	_{Dan Hemberger} 🐛 💻	_{Martin Fleischmann} 🐛 💻 ⚠️	_{Matthias Meulien} 💻 🐛	_{Isaac Boates} 💻 🐛 ⚠️
_{Kyle Penner} 💻 🐛 📖	_paulcochrane 💻 📖 ⚠️ 🐛	_{Antonio Ettorre} 📦	_DWesl 💻	_{Víctor Molina García} 📦	_{Samuel Kogler} 🐛 💻	_{Alexander Shadchin} 🐛 💻
_{Greg Lucas} 💻 🤔 🚧	_{Dan Mahr} 💻 📖 ⚠️	_{Romain Hugonnet} 💻 📖 ⚠️	_{Javier Jimenez Shaw} 💻 📖 ⚠️	_{Daniel McDonald} 📖	_{Cora Schneck} 📖 ⚠️	_zanejgr 📖
_{Tomasz Kłoczko} ⚠️	_{Trinh Quoc Anh} ⚠️	_necabo 📦	_{Mayeul DUVAL} 📖	_{Adam J. Stewart} 💻 📖	_{Gleb Khmyznikov} 📦	_{𝖉𝖆𝖓𝖎𝖊𝖑 𝖇𝖚𝖗𝖗} 🐛 💻
_{Xylar Asay-Davis} ⚠️	_{Clément Robert} 🚧 💻	_{Per Helge Aarnes} 🐛 💻	_{Steve Berardi} 📖	_{Frederik Kratzert} 📖	_{Kurt Schwehr} 📖	_{Jack Broom} 📖
_Hugo 📖	_{Christian Clauss} ⚠️	_Recoordinate 📖	_{Inah James} 💻	_{Dylan Pulver} 💻

This project follows the all-contributors specification. Contributions of any kind welcome!

cartographic-projection

coordinate-systems

coordinate-transformation

geodesic

geospatial

hacktoberfest

python

Project health

Overall

5.2/10

Maintained

10/10

Code review

5/10

OpenSSF Scorecard

PyPI

pyproj

Latest release

3.8.0 · Sep 5, 2026

Releases this year

Significant stargazers

Mateusz Konieczny

217 followers · starred Mar 2021

Patrick José Pereira

493 followers · starred Apr 2026

Miroslav Šedivý

90 followers · starred Jan 2021

Greg Troxel

25 followers · starred Nov 2019

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pyproj4/pyproj

Python interface to PROJ (cartographic projections and coordinate transformations library)

Python

1,231

1,265 commits

updated Oct 12, 2026

pyproj4.github.io/pyproj

See the code

README

pyproj

Python interface to PROJ (cartographic projections and coordinate transformations library).

Documentation

Stable: http://pyproj4.github.io/pyproj/stable/
Latest: https://pyproj4.github.io/pyproj/latest/

Bugs/Questions

Report bugs/feature requests: https://github.com/pyproj4/pyproj/issues
Ask questions: https://github.com/pyproj4/pyproj/discussions
Ask the GIS community: https://gis.stackexchange.com/questions/tagged/pyproj

Contributors ✨

Thanks goes to these wonderful people (emoji key):

_{Jeff Whitaker} 📖 ⚠️ 💻 💡 🤔 👀 💬 🚧 🚇 🐛	_{Alan D. Snow} 📖 ⚠️ 💻 💡 🚧 🚇 🤔 👀 💬 🐛	_{Micah Cochran} 📖 ⚠️ 💻 🚧 🚇 👀 💬 🐛	_{Joris Van den Bossche} 📖 💻 🤔 👀 💬 🐛 ⚠️	_{Chris Mayo} ⚠️	_{Charles Karney} 💻 ⚠️	_{Justin Dearing} 🚇
_{Jos de Kloe} 💻 ⚠️ 🐛	_{George Ouzounoudis} 💻 🤔	_{David Hoese} 👀 🤔 📦 📖 ⚠️ 💻	_{Mikhail Itkin} 💻	_{Ryan May} 💻	_artttt 🤔	_Filipe 🚇 💻 📦 📖
_Heitor 📖	_{Bas Couwenberg} 💻 📦 ⚠️	_{Nick Eubank} 💻	_{Michael Dunphy} 📖	_{Matthew Brett} 🚇 📦	_{Jakob de Maeyer} 💻	_{The Gitter Badger} 📖
_{Bernhard M. Wiedemann} 💻	_{Marco Aurélio da Costa} 💻	_{Christopher H. Barker} 💻	_{Kristian Evers} 💬 🤔 📖	_{Even Rouault} 💬	_{Christoph Gohlke} 📦 💬 🐛 ⚠️	_{Chris Willoughby} 💻
_{Guillaume Lostis} 📖	_{Eduard Popov} 📖	_{Joe Ranalli} 🐛 💻 ⚠️	_{Greg Berardinelli} 🐛 💻 🤔 ⚠️	_{Martin Raspaud} 🐛 💻 ⚠️ 🤔	_{Mike Taves} ⚠️	_{David Haberthür} 📖
_mmodenesi 🐛 💻 ⚠️	_jacob-indigo 🐛 💻	_{Poruri Sai Rahul} ⚠️	_{Yann-Sebastien Tremblay-Johnston} 📖	_odidev 📦	_{Idan Miara} 💻 📖 💡 ⚠️	_{Brendan Jurd} 📖 🎨
_{Bill Little} 📖	_{Gerrit Holl} 📖	_{Kirill Kouzoubov} 💻	_{Dan Hemberger} 🐛 💻	_{Martin Fleischmann} 🐛 💻 ⚠️	_{Matthias Meulien} 💻 🐛	_{Isaac Boates} 💻 🐛 ⚠️
_{Kyle Penner} 💻 🐛 📖	_paulcochrane 💻 📖 ⚠️ 🐛	_{Antonio Ettorre} 📦	_DWesl 💻	_{Víctor Molina García} 📦	_{Samuel Kogler} 🐛 💻	_{Alexander Shadchin} 🐛 💻
_{Greg Lucas} 💻 🤔 🚧	_{Dan Mahr} 💻 📖 ⚠️	_{Romain Hugonnet} 💻 📖 ⚠️	_{Javier Jimenez Shaw} 💻 📖 ⚠️	_{Daniel McDonald} 📖	_{Cora Schneck} 📖 ⚠️	_zanejgr 📖
_{Tomasz Kłoczko} ⚠️	_{Trinh Quoc Anh} ⚠️	_necabo 📦	_{Mayeul DUVAL} 📖	_{Adam J. Stewart} 💻 📖	_{Gleb Khmyznikov} 📦	_{𝖉𝖆𝖓𝖎𝖊𝖑 𝖇𝖚𝖗𝖗} 🐛 💻
_{Xylar Asay-Davis} ⚠️	_{Clément Robert} 🚧 💻	_{Per Helge Aarnes} 🐛 💻	_{Steve Berardi} 📖	_{Frederik Kratzert} 📖	_{Kurt Schwehr} 📖	_{Jack Broom} 📖
_Hugo 📖	_{Christian Clauss} ⚠️	_Recoordinate 📖	_{Inah James} 💻	_{Dylan Pulver} 💻

This project follows the all-contributors specification. Contributions of any kind welcome!

cartographic-projection

coordinate-systems

coordinate-transformation

geodesic

geospatial

hacktoberfest

python

Project health

Overall

5.2/10

Maintained

10/10

Code review

5/10

OpenSSF Scorecard

PyPI

pyproj

Latest release

3.8.0 · Sep 5, 2026

Releases this year

Significant stargazers

Mateusz Konieczny

217 followers · starred Mar 2021

Patrick José Pereira

493 followers · starred Apr 2026

Miroslav Šedivý

90 followers · starred Jan 2021

Greg Troxel

25 followers · starred Nov 2019

Similar repos

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PROJ - Cartographic Projections and Coordinate Transformations Library

2,029

proj4js/proj4js

JavaScript library to transform coordinates from one coordinate system to another, including datum…

2,243

pyOpenSci/python-package-guide

Python packaging made simple. Recommendations & guidance curated by the pyOpenSci community

152

pysal/libpysal

Core components of Python Spatial Analysis Library

293

python-visualization/folium

Python Data. Leaflet.js Maps.

7,414

pyOpenSci/software-review

pyOpenSci Peer review is paused for August and into early September as we rebuild our editorial…

128

corteva/rioxarray

geospatial xarray extension powered by rasterio

626

geopandas/geopandas

Python tools for geographic data

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