As of Version 9.0, unit functionality is built into the Wolfram Language »
Details and Options
- To use Barn, you first need to load the Units Package using Needs["Units`"].
- Barn is equivalent to 10-28 Meter2 (SI units).
- Convert[n Barn,newunits] converts n Barn to a form involving units newunits.
- Barn is typically abbreviated as b.