A cross-platform, open-source, alternative to NIST REFPROP. Based on reference-accuracy equations of state and transport property correlations for refrigerants like Water, CO2, R134a, Nitrogen, Argon, Ammonia, Air, R404a, R410a, Propane and many others. A selection of secondary working fluid properties are also available. Can also make use of REFPROP when available.

In addition, calculations for Humid Air Properties based on ASHRAE RP-1485 are provided.

Wrappers are available for MATLAB, Octave, Python, C#, Fortran and many more.

Project Activity

See All Activity >


MIT License

Follow CoolProp

CoolProp Web Site

Other Useful Business Software

Open source. Easy to use. Proven. Complete. Open source. Easy to use. Proven. Complete. Icon
Open source. Easy to use. Proven. Complete. Icon

End to end big data that enables you to spend less time formatting data and more time analyzing it.

Discover HPCC Systems - the truly open source big data solution that allows you to quickly process, analyze and understand large data sets, even data stored in massive, mixed-schema data lakes. Designed by data scientists, HPCC systems is a complete integrated solution from data ingestion and data processing to data delivery. The free online introductory courses and a robust developer community allow you to get started quickly.

Rate This Project

Login To Rate This Project

User Ratings

ease 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 5 / 5
features 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 5 / 5
design 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 5 / 5
support 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 5 / 5

User Reviews

  • I am extremely happy to finally find CoolProp, an open source library of work medium parameters (temperature, pressure, enthalpy etc.). This package opens up further opportunities for various visualisation software, thermodynamic studies and engineering. Good work!

  • First totally open-source and computationally-efficient thermodynamic library! Great work!

  • A very clean interface to thermodynamic properties on many fluids.

  • A very nice piece of software, I started using it for humid air calculations. I do especially like the fact that it has water properties below the Triple point. It is quite well structured, the syntax is similar to the Matlab syntax for refprop. For me it worked on my XP Laptop without problem. I have done some random tests against Antoine and Magnus equations for Steam and some polynomial approximations for air and steam. It looks promising.

Read more reviews >

Additional Project Details

Intended Audience

Science/Research, Engineering

Programming Language

C#, MATLAB, Python, C++, C