# Fortran Timeline

Version | Release date |
---|---|

Fortran | 1957 |

Fortran II | 1958 |

Fortran IV | 1961 |

Fortran 66 | 1966 |

Fortran 77 | 1978 |

Fortran 90 | 1992 |

Fortran 95 | 1996 |

Fortran 2003 | 2004 |

Fortran 2008 | 2010 |

Fortran 2018* | 2018 |

Fortran 2023 | 2023 |

* Fortran 2018 was originally slated to be called Fortran 2015 and this name is still present in older literature.

Note that Fortran III did exist, but was kept internal to IBM and never publicly released.

## Other variants

High performance Fortran or HPF was a widely-used extension to Fortran 90 to allow the simple development of programs which could take advantage of a parallel processing architecture. Many of the extensions were subsequently incorporated into the Fortran 95 standard.

The language F is a subset of Fortran which removes all redundancy and obsolescent features.