SimNIBS is a free and open source software package for the Simulation of Non-invasive Brain Stimulation. It allows for realistic calculations of the electric field induced by transcranial magnetic stimulation (TMS) and transcranial electric stimulation (TES).

A SimNIBS workflow consists of three main parts:


SimNIBS is being developed at the Danish Research Centre for Magnetic Resonance (DRCMR) and the Technical University of Denmark (DTU), in collaboration with external partners

SimNIBS is copyrighted © by its authors and licensed under GPL v3.


SimNIBS is a research tool. Clinical usage is not supported or advised. In particular, SimNIBS was not tested to give accurate results in the presence of pathological condition


  • Version 3.1 is now avaliable. This version features TDCS electrode optimization, TMS coil position optimization and even faster FEM solvers for leadfield calculations

  • Version 3.0 is now available. It is a major update of SimNIBS. Expect much faster simulations and easier visualizations!