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Previous FLUKA user ids (so-called FUIDs) do not grant access to the FLUKA packages on this website, but a new registration is required.

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System requirements and installation instructions can be found here. It is recommended to consult this page if you are unsure which package to download.

Latest FLUKA version: 4-1.1, released on:
Release highlights:


  • Charged particle transport in electric fields has been implemented (in vacuum).
  • Anisotropic effects in crystals have been modeled for positively charged particles, including channeling, dechanneling, volume reflection and volume capture.
  • Electronuclear reactions have been enabled.
  • Direct (p,n) reactions to the Isobaric Analogue State of several target isotopes have been implemented or substantially improved from threshold up to a few hundred MeV.
  • Alpha reaction cross sections have been refined.
  • The BME event generator has been interfaced to pre-equilibrium for configurations outside the domain of its pre-computed database and has been extended to 3He and 3H induced reactions.
  • The RQMD event generator has been interfaced to pre-equilibrium.
  • Photofission has been eventually restored, including electron and positron photonuclear reactions.
  • Spin and parity of the compound nucleus are now accounted for during the evaporation and Fermi break-up stages. New in FLUKA 4-1.0
  • Photonuclear cross sections on 46Ti, 48Ti, 181Ta, and 208Pb have been slightly adjusted in the Giant-Dipole-Resonance region to remove spurious features. New in FLUKA 4-1.0


  • Parenthesis expansion in region definitions is evaluated runtime, if it results in too many terms at initialization.
  • A spatially distributed source can be defined from a USRBIN output file.
  • Multiple beam spots can be defined, allowing treatment planning system simulations.
  • Dynamic memory allocation has been implemented, allowing for heavy USRBIN grids as well as large voxel files.
  • An additional version of the source routine, source_newgen.f, with a cleaner structure, has been made available as beta release in the src/user/ directory. New in FLUKA 4-1.0
  • The usrmed.f user routine has now three additional arguments for the particle polarization direction. New in FLUKA 4-1.0

Several bugs were fixed (see release notes of FLUKA 4-1.1 for a complete list)

Binary libraries for GNU/Linux:
Download gfortran 7, 64 bits (.tgz)
Download gfortran 7, 64 bits (.rpm)
Download gfortran 7, 64 bits (.deb)
Download gfortran 9, 64 bits (.tgz)
Download gfortran 9, 64 bits (.rpm)
Download gfortran 9, 64 bits (.deb)
Binary libraries for macOS:
Download gfortran 8, 64 bits (.tgz)
Download gfortran 10, 64 bits (.tgz)
Download gfortran 11, 64 bits - ARM (.tgz)
Source code*:
Download (.tgz)
Download (.rpm)