A fast and flexible implementation of Rigid Body Dynamics algorithms and their analytical derivatives
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Pinocchio Logo

License Documentation Coverage Report Conda Downloads Conda Version PyPI version

Pinocchio instantiates the state-of-the-art Rigid Body Algorithms for poly-articulated systems based on revisited Roy Featherstone's algorithms. Besides, Pinocchio provides the analytical derivatives of the main Rigid-Body Algorithms like the Recursive Newton-Euler Algorithm or the Articulated-Body Algorithm.

Pinocchio is first tailored for robotics applications, but it can be used in extra contexts (biomechanics, computer graphics, vision, etc.). It is built upon Eigen for linear algebra and FCL for collision detection. Pinocchio comes with a Python interface for fast code prototyping, directly accessible through Conda.

Pinocchio is now at the heart of various robotics software as Crocoddyl, an open-source and efficient Differential Dynamic Programming solver for robotics, the Stack-of-Tasks, an open-source and versatile hierarchical controller framework or the Humanoid Path Planner, an open-source software for Motion and Manipulation Planning.

If you want to learn more on Pinocchio internal behaviors and main features, we invite you to read the related paper and the online documentation.

If you want to directly dive into Pinocchio, only one single line is sufficient (assuming you have Conda):

conda install pinocchio -c conda-forge

or via pip (currently only available on Linux):

pip install pin

Table of contents

Pinocchio main features

Pinocchio is fast:

  • C++ template library,
  • cache friendly,
  • automatic code generation support via CppADCodeGen.

Pinocchio is versatile, implementing basic and more advanced rigid body dynamics algorithms:

  • forward kinematics and its analytical derivatives,
  • forward/inverse dynamics and their analytical derivatives,
  • centroidal dynamics and its analytical derivatives,
  • support of multiple precision arithmetic via Boost.Multiprecision or any similar framework,
  • computations of kinematic and dynamic regressors for system identification and more,
  • and much more with the support of modern and open source Automatic Differentiation frameworks like CppAD or CasADi.

Pinocchio is flexible:

  • header only,
  • C++ 98/03/11/14/17/20 compliant.

Pinocchio is extensible. Pinocchio is multi-thread friendly. Pinocchio is reliable and extensively tested (unit-tests, simulations and real world robotics applications). Pinocchio is supported and tested on Windows, Mac OS X, Unix and Linux (see build status here).


The online Pinocchio documentation of the last release is available here. A cheat sheet pdf with the main functions and algorithms can be found here.


We provide some basic examples on how to use Pinocchio in Python in the examples directory. Additional examples introducing Pinocchio are also available in the documentation.


Pinocchio comes with a large bunch of tutorials aiming at introducing the basic tools for robot control. Tutorial and training documents are listed here. You can also consider the interactive jupyter notebook set of tutorials developped by Nicolas Mansard and Yann de Mont-Marin.

Pinocchio continuous integrations

Pinocchio is constantly tested for several platforms and distributions, as reported below:

CI on Linux via APT linux
CI on OSX via Conda mac
CI on Windows via Conda windows
CI on Linux via Robotpkg Pipeline Status


Pinocchio exploits at best the sparsity induced by the kinematic tree of robotics systems. Thanks to modern programming language paradigms, Pinocchio is able to unroll most of the computations directly at compile time, allowing to achieve impressive performances for a large range of robots, as illustrated by the plot below, obtained on a standard laptop equipped with an Intel Core i7 CPU @ 2.4 GHz.

Pinocchio Logo

For other benchmarks, and mainly the capacity of Pinocchio to exploit at best your CPU capacities using advanced code generation techniques, we refer to the technical paper. In addition, the introspection done here may also help you to understand and compare the performances of the modern rigid body dynamics librairies.

Ongoing developments

If you want to follow the current developments, you can directly refer to the devel branch. The master branch only contains the latest release. Any new Pull Request should then be submitted on the devel branch.


Pinocchio can be easily installed on various Linux (Ubuntu, Fedora, etc.) and Unix distributions (Mac OS X, BSD, etc.). Please refer to the installation procedure.

If you only need the Python bindings of Pinocchio, you may prefer to install it through Conda. Please follow the procedure described here.


Pinocchio is also deployed on ROS, you may follow its deployment status below. If you're interested in using Pinocchio on systems and/or with packages that integrate with the ROS ecosystem, we recommend the installation of Pinocchio via the binaries distributed via the ROS PPA. Here, you can install Pinocchio using sudo apt install ros-$ROS_DISTRO-pinocchio. This installs Pinocchio with HPP-FCL support and with Python bindings. You can then depend on Pinocchio in your package.xml config (<depend>pinocchio</depend>) and include it via CMake (find_package(pinocchio REQUIRED)) -- we include support and hooks to discover the package for both ROS1 and ROS2. An example can be found here. Please note that we advise to always include the pinocchio/fwd.hpp header as the first include to avoid compilation errors from differing Boost-variant sizes.

ROS1      ROS2
Melodic      Foxy
Noetic      Galactic


Pinocchio provides support for many open-source and free visualizers:

  • Gepetto Viewer: a C++ viewer based on OpenSceneGraph with Python bindings and Blender export. See here for a C++ example on mixing Pinocchio and Gepetto Viewer.
  • Meshcat: supporting visualization in Python and which can be embedded inside any browser.
  • Panda3d: supporting visualization in Python and which can be embedded inside any browser.
  • RViz: supporting visualization in Python and which can interact with other ROS packages.

Many external viewers can also be integrated. See example here for more information.

Citing Pinocchio

To cite Pinocchio in your academic research, please use the following bibtex entry:

   title={The Pinocchio C++ library -- A fast and flexible implementation of rigid body dynamics algorithms and their analytical derivatives},
   author={Carpentier, Justin and Saurel, Guilhem and Buondonno, Gabriele and Mirabel, Joseph and Lamiraux, Florent and Stasse, Olivier and Mansard, Nicolas},
   booktitle={IEEE International Symposium on System Integrations (SII)},

and the following one for the link to the GitHub codebase:

   author = {Justin Carpentier and Florian Valenza and Nicolas Mansard and others},
   title = {Pinocchio: fast forward and inverse dynamics for poly-articulated systems},
   howpublished = {},
   year = {2015--2021}

The algorithms for the analytical derivatives of rigid-body dynamics algorithms are detailed here:

  title = {Analytical Derivatives of Rigid Body Dynamics Algorithms},
  author = {Carpentier, Justin and Mansard, Nicolas},
  booktitle = {Robotics: Science and Systems},
  year = {2018}

Questions and Issues

You have a question or an issue? You may either directly open a new question or a new issue or, directly contact us via the mailing list [email protected].


The following people have been involved in the development of Pinocchio and are warmly thanked for their contributions:

If you have taken part to the development of Pinocchio, feel free to add your name and contribution in this list.

Open-source projects relying on Pinocchio

  • Crocoddyl A software to realize model predictive control for complex robotics platform.
  • TSID A software which implements an Task Space Inverse Dynamics QP.
  • HPP A SDK which implements motion planner for humanoids and other robots.
  • Jiminy A simulator based on Pinocchio.
  • ocs2 A toolbox for Optimal Control for Switched Systems (OCS2)
  • TriFingerSimulation TriFinger Robot Simulation (a Robot to perform RL on manipulation).
  • Casadi_Kin_Dyn IIT Package for generation of symbolic (SX) expressions of robot kinematics and dynamics.


The development of Pinocchio is actively supported by the Gepetto team @LAAS-CNRS and the Willow team @INRIA.

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