The UDUNITS package supports units of physical quantities. Its C library provides for arithmetic manipulation of units and for conversion of numeric values between compatible units. The package contains an extensive unit database, which is in XML format and user-extendable. The package also contains a command-line utility for investigating units and converting values.
More information: https://www.unidata.ucar.edu/software/udunits/
You can check the versions installed in Gadi with a module
query:
$ module avail udunits
We normally recommend using the latest version available and always recommend to specify the version number with the module
command:
$ module load udunits/2.2.26
For more details on using modules see our modules help guide at https://opus.nci.org.au/display/Help/Environment+Modules.
See the documentation of UDUNITS available at https://www.unidata.ucar.edu/software/udunits/#documentation.