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Free download qmol Linux app to run online in Ubuntu online, Fedora online or Debian online

This is the Linux app named qmol whose latest release can be downloaded as qmol- It can be run online in the free hosting provider OnWorks for workstations.

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qmol is a simple molecular weight calculator, available for Linux and Windows, derived from Tomislav Gountchev's KMol. You can enter a formula, (e.g. CH3(CH2)2OH) and get its molecular weight (60.0959 g/mol) and its elemental composition (C3H8O: C 59.96; H 13.42; O 26.62 %).

See the features list below for more details or consult the wiki page: https://sourceforge.net/p/qmol/wiki/Home/.

For Windows binary and source code see the files section: https://sourceforge.net/projects/qmol/files/

Binary packages (rpm/deb) for
openSUSE Leap 15.2-42.2, xUbuntu 20.10-19.10, 17.04, Fedora 33, CentOS 8, Scientific Linux 7, and Debian 10.0-8.0 can be found at: http://download.opensuse.org/repositories/home:/lineinthesand/


  • Pre-defined groups (alkyls/aryls, amino acids)
  • User-defined groups
  • Protein/oligopeptide calculation mode
  • One-letter amino acids parsing in square brackets []
  • History of recently calculated formulas
  • Configurable output
  • Command line calculation


Science/Research, Education

User interface


Programming Language



Molecular Science, Chemistry, Education

This is an application that can also be fetched from https://sourceforge.net/projects/qmol/. It has been hosted in OnWorks in order to be run online in an easiest way from one of our free Operative Systems.