gives the base name for a file without its extension.

Details and Options

  • FileBaseName["name.ext"] gives "name".
  • FileBaseName drops all directory specifications.
  • FileBaseName by default assumes pathname separators and other conventions suitable for your operating system.
  • FileBaseName[,OperatingSystem->"os"] uses the conventions of the specified operating system. Possible choices are "Windows", "MacOSX", and "Unix".
  • FileBaseName just operates on names of files; it does not actually search for the file specified.
  • FileBaseName[File["file"]] is also supported.


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Basic Examples  (2)

Find base name of the file:

Split off the last extension:

Scope  (3)

Leading directory names are dropped:

Force interpretation of a file name as a Windows path:

Get the base name of the file specified by the File object:

Possible Issues  (1)

The period is not considered part of the name, even if there is no extension:

Wolfram Research (2008), FileBaseName, Wolfram Language function, (updated 2016).


Wolfram Research (2008), FileBaseName, Wolfram Language function, (updated 2016).


Wolfram Language. 2008. "FileBaseName." Wolfram Language & System Documentation Center. Wolfram Research. Last Modified 2016.


Wolfram Language. (2008). FileBaseName. Wolfram Language & System Documentation Center. Retrieved from


@misc{reference.wolfram_2022_filebasename, author="Wolfram Research", title="{FileBaseName}", year="2016", howpublished="\url{}", note=[Accessed: 05-October-2022 ]}


@online{reference.wolfram_2022_filebasename, organization={Wolfram Research}, title={FileBaseName}, year={2016}, url={}, note=[Accessed: 05-October-2022 ]}