Unit conversion
The Unit Conversion Formula is also available in the Property Calculator. There you can use the tool to find a conversion factor and directly use the factor in your expression.
The Unit Conversion form can be used to get a conversion factor between every available unit in the unit system dictionary. The conversion factor that is used is given in the lower part of the form, as well as the new value. Click Swap to swap over the 'from' and the 'to' units, and a new formula and value will be shown.