easyCHEM documentation

Welcome to the esayCHEM documentation. easyCHEM is a Python package for atmospheric equilibrium chemistry. It is a clone of the equilibrium chemistry part of NASA’s CEA code, written from scratch and with numerical stability in mind. In particular, the code implements the equations described in Gordon & McBride (1994).

To get started with some examples on how to run easyCHEM immediately, see “Getting started”. Otherwise read on for some more general info.

easyCHEM is available under the MIT License, and its base implementation is desribed in Mollière et al. (2017).

This documentation webpage contains an installation guide, a tutorial, and an API documentation.


  • Elise Lei and Paul Mollière