.. _SysOfUnits:

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System of units
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|opr| units is according **SI** and users should enter any value in any part of the code according SI unit`s system. Some of the units are mentioned in the following table:

.. csv-table:: 
   :header: "Quantity name", "Unit name", "Unit symbol"
   :widths: 15, 15, 15

   Time, second, :math:`s`
   Length, metre, :math:`m`
   Mass, kilogram, :math:`kg`
   Temperature, kelvin, :math:`K`
   Amount of substance, mole, :math:`mol`