NAG Downloads - Fortran Library

Specific download information:

  • Fortran Library, Mark 22
  • For Microsoft Windows XP/Vista/7 DLL
  • Using Intel(R) Fortran Compiler for 32-bit applications Version 10.1 and compatible (including Version 11.0)
  • File size / MD5sum of Fortran Library
    80.9 MB ; 84851337 bytes ; MD5sum=6961b031e95efe1bc2ce66d5daddb375
  • File size / MD5sum of Documentation:
    145 MB ; 152069159 bytes; MD5sum=a44a2f3ba0c5366e16d829e02208ee0c
  • NAG Product Code: FLDLL224ML


The software is provided as self-extracting executable.
Download it from here (80.9 MB),
and then run setup_fldll224ml.exe to install the Fortran Library.

For further installation instructions, please refer to the Installer's Note and Users' Note .


You can access the documentation on our website at
You also have the option to download the self-extracting executable from here (145 MB),
and then run setup_mk22_manual.exe to install the Fortran Library Manual.

Licence key

To enable the use of your NAG software you will need a relevant licence key. Instructions for obtaining a licence key are included in the products Installer's Note. Links to each product's Installer's Notes can be found on that product's download page. Alternatively you can complete the ‘Request a Licence Key’ web form here. If you've already been supplied with a licence key from our Support Desk then you will not need to complete this form/request a key. In the event of difficulty please contact your NAG response centre.

Trial Request

For more information please fill out the trial request form.

Product Purchasing

The product can be purchased by contacting one of our offices.