As of Version 9.0, unit functionality is built into the Wolfram Language »
Details and Options
- To use Rod, you first need to load the Units Package using Needs["Units`"].
- Rod is equivalent to approximately 5.0292 Meter (SI units).
- Rod is equivalent to 5.5 Yard.
- Convert[n Rod,newunits] converts n Rod to a form involving units newunits.