CoolProp
Open-source thermodynamic and transport properties database
Decision gist · record as of 2026-08-14
Yes. CoolProp is actively maintained, carries no known vulnerabilities, uses a permissive MIT license, and offers a mature alternative to proprietary thermodynamic databases. Install friction is moderate but manageable via precompiled wheels. Worth installing if you need thermodynamic or transport property calculations for fluids.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Medium install friction due to compiled wheels for multiple platforms and Python versions.
- Active maintenance with a recent release 48 days ago and ongoing repository activity; no known vulnerabilities.
License · maintenance · safety
MIT (permissive) — MIT license permits commercial and academic use without restriction, making it suitable for proprietary projects and research alike.
last release 2026-06-27 (48 days) · last repo commit 2026-08-14 · 1,050 stars
0 known vulnerabilities (OSV.dev, 2026-08-14) · 5,452,612 downloads/mo, #2,097 on PyPI
Alternatives
Verify before relying
pip install coolprop
import CoolProp.CoolProp as CP
properties = CP.PropsSI('T', 'P', 'Q', 'Water')- Exact list of supported fluids and fluid mixtures beyond the description's general claim
- Performance characteristics for large-scale or real-time property calculations
- Whether numpy is required at runtime or only for optional features
- Specific thermodynamic properties available through the API
What it is and what it does
CoolProp is an open-source thermophysical property database that calculates thermodynamic and transport properties for fluids and fluid mixtures. It provides similar functionality to commercial thermodynamic software but is free and open-source, originally developed by Ian Bell. The package wraps a compiled backend and depends on numpy, delivering property lookups through a Python interface.
Developers use CoolProp to retrieve properties for engineering calculations in HVAC, refrigeration, power generation, and research applications. The package supports Python 3.9 through 3.14 and is distributed as precompiled wheels across macOS, Linux, and Windows platforms, reducing installation friction for typical users.
Use it for
- Calculate refrigerant properties for HVAC and heat pump system design
- Retrieve thermodynamic state variables for power cycle modeling
- Compute transport properties for fluid flow analysis
- Support thermodynamic calculations in research and academic projects
- Enable property lookups in engineering software requiring fluid data
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes.
CoolProp is actively maintained, carries no known vulnerabilities, uses a permissive MIT license, and offers a mature alternative to proprietary thermodynamic databases. Install friction is moderate but manageable via precompiled wheels. Worth installing if you need thermodynamic or transport property calculations for fluids.
Install
coolprop on PyPI
Before you install
Medium install friction due to compiled wheels for multiple platforms and Python versions. Active maintenance with a recent release 48 days ago and ongoing repository activity; no known vulnerabilities.
License in practice
MIT license permits commercial and academic use without restriction, making it suitable for proprietary projects and research alike.
Quickstart
pip install coolprop
import CoolProp.CoolProp as CP
properties = CP.PropsSI('T', 'P', 'Q', 'Water')Verify before relying
- Exact list of supported fluids and fluid mixtures beyond the description's general claim
- Performance characteristics for large-scale or real-time property calculations
- Whether numpy is required at runtime or only for optional features
- Specific thermodynamic properties available through the API
Package facts
| License | MIT permissive |
| Python support | Supports the current Python release >=3.9 |
| Install friction | Medium. Platform-specific wheel |
| Runtime dependencies | 1 packagenumpy |
| Maintenance | Actively maintained 48 days since the last release |
| Last repo commit | |
| First released | |
| Downloads | 5,452,612 / month, #2,097 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | Development Status :: 5 - Production/StableEnvironment :: Other EnvironmentIntended Audience :: DevelopersIntended Audience :: Science/ResearchLicense :: OSI Approved :: MIT LicenseOperating System :: OS IndependentProgramming Language :: PythonProgramming Language :: Python :: 3Programming Language :: Python :: 3.10Programming Language :: Python :: 3.11Programming Language :: Python :: 3.12Programming Language :: Python :: 3.13Programming Language :: Python :: 3.14Programming Language :: Python :: 3.9Topic :: Scientific/EngineeringTopic :: Scientific/Engineering :: PhysicsTopic :: Software Development :: Libraries :: Python Modules |
Evidence: coolprop-8.0.0-cp310-cp310-macosx_11_0_arm64.whl; coolprop-8.0.0-cp310-cp310-macosx_11_0_x86_64.whl; coolprop-8.0.0-cp310-cp310-manylinux2014_aarch64.manylinux_2_17_aarch64.whl; coolprop-8.0.0-cp310-cp310-manylinux2014_x86_64.manylinux_2_17_x86_64.whl; coolprop-8.0.0-cp310-cp310-win32.whl; coolprop-8.0.0-cp310-cp310-win_amd64.whl; coolprop-8.0.0-cp310-cp310-win_arm64.whl; coolprop-8.0.0-cp311-cp311-macosx_11_0_arm64.whl; coolprop-8.0.0-cp311-cp311-macosx_11_0_x86_64.whl; coolprop-8.0.0-cp311-cp311-manylinux2014_aarch64.manylinux_2_17_aarch64.whl; coolprop-8.0.0-cp311-cp311-manylinux2014_x86_64.manylinux_2_17_x86_64.whl; coolprop-8.0.0-cp311-cp311-win32.whl; coolprop-8.0.0-cp311-cp311-win_amd64.whl; coolprop-8.0.0-cp311-cp311-win_arm64.whl; coolprop-8.0.0-cp312-abi3-macosx_11_0_arm64.whl; coolprop-8.0.0-cp312-abi3-macosx_11_0_x86_64.whl; coolprop-8.0.0-cp312-abi3-manylinux2014_aarch64.manylinux_2_17_aarch64.whl; coolprop-8.0.0-cp312-abi3-manylinux2014_x86_64.manylinux_2_17_x86_64.whl; coolprop-8.0.0-cp312-abi3-win32.whl; coolprop-8.0.0-cp312-abi3-win_amd64.whl
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