UNITS(1)                                                 UNITS(1)

     NAME
          units - conversion program

     SYNOPSIS
          units [ -v ] [ file ]

     DESCRIPTION
          Units converts quantities expressed in various standard
          scales to their equivalents in other scales.  It works
          interactively in this fashion:

               you have: inch
               you want: cm
                   * 2.54
                   / 0.393701

          A quantity is specified as a multiplicative combination of
          units and floating point numbers.  Operators have the fol-
          lowing precedence:

               + -            add and subtract
               * / × ÷        multiply and divide
               catenation     multiply
               ² ³ ^          exponentiation
               |              divide
               ( ... )        grouping

          Most familiar units, abbreviations, and metric prefixes are
          recognized, together with a generous leavening of exotica
          and a few constants of nature including:

               pi,π    ratio of circumference to diameter
               c       speed of light
               e       charge on an electron
               g       acceleration of gravity
               force   same as g
               mole    Avogadro's number
               water   pressure head per unit height of water
               au      astronomical unit

          The `pound' is a unit of mass.  Compound names are run
          together, e.g.  `lightyear'.  British units that differ from
          their US counterparts are prefixed thus: `brgallon'.  Cur-
          rency is denoted `belgiumfranc', `britainpound', etc.

          The complete list of units can be found in /lib/units.  A
          file argument to units specifies a file to be used instead
          of /lib/units.  The -v flag causes units to print its entire
          database.

     UNITS(1)                                                 UNITS(1)

     EXAMPLE
          you have: 15 pounds force/in²
          you want: atm
              * 1.02069
              / .97973

     FILES
          /lib/units

     SOURCE
          /src/cmd/units.y

     BUGS
          Since units does only multiplicative scale changes, it can
          convert Kelvin to Rankine but not Centigrade to Fahrenheit.

          Currency conversions are only as accurate as the last time
          someone updated the database.