| Web function | Short description of function |
| MnConvertUnit | Returns the value in one ((simple) physical unit of a value in another (simple) physical unit |
| MnConvertUnitCompatibles | Returns an array of all phyiscal units recognised by the website compatible with the input physical unit |
| MnConvertUnitFromSI | Converts a unit value in the corresponding SI physical unit to a unit value in the selected physical unit |
| MnConvertUnitGeneral | Returns the value in one (compound) physical unit of a value in another (compound) physical unit |
| MnConvertUnitSIEquivalent | Returns the SI equivalent of a given physical unit |
| MnConvertUnitToSI | Converts a unit value in the selected physical unit to a unit value in the corresponding SI physical unit |
| MnConvertUnitToSIExplanation | Provides an expanation for why a physical unit converts to/from SI units in the manner used by the website |
| MnConvertUnitToSIFactor | Converts a unit value in the selected physical unit to a unit value in the equivalent SI unit |
| MnConvertUnitType | Returns the type of unit that a measurement unit is (e.g. if it is a SI unit) |
| MnIsRecognisedPhysicalUnit | Indicates if a given physical unit is recognised by the website |
| MnSIDimensionNames | Returns an array giving the base dimensions of the SI physical unit system |
| MnSIDimensionsOf | Returns an array giving the SI dimensions of a given physical unit |