## How Do I Use Units in *Mathematica*?
In order to make use of units in *Mathematica*, it is useful to load the
`Miscellaneous`Units`` package.
**Needs["Miscellaneous`Units`"]**
When this package is loaded, 270 units of measure and five
functions used for conversion are defined. The conversion
functions are `Convert`, `ConvertTemperature`,
`SI`,
`CGS`, and `MKS`. Units are
treated as any other symbol in *Mathematica*, so expressing a number
with a unit is like multiplying a number by a symbol.
Most units
defined in this package are singular, not plural, so always use
the singular form to be safe. For example, this package uses `3 Acre`, not
`3 Acres`. There are some exceptions to this rule. For
example, you can use `Feet` or `Foot`. A
complete list of symbols can be found below.
Numbers with units can be multiplied.
**12 Foot * 16 Foot**
`192 Foot`^{2}
More complicated units can also be used.
**85 Meter/Second * 10 Second**
`850 Meter`
Conversions between units can be carried out.
**Convert[78 Pole, Foot]**
`1287. Foot`
**Convert[9.8 Meter/Second, Foot/Second]**
Converting between temperature units is handled differently. For this
reason, a separate function is defined to handle temperature conversions.
**ConvertTemperature[212, Fahrenheit, Celsius]**
`100`
Here is a list of all of the symbols defined when the
`Miscellaneous`Units`` package is loaded.
**Flatten[Names/@{"Miscellaneous`Units`*",**
"Miscellaneous`SIUnits`*"}]
`{Abampere, Abcoulomb, Abfarad, Abhenry, Abmho,
Abohm, Abvolt, Acre, AMU, Angstrom, Apostilb, ArcMinute, ArcSecond, Are,
AssayTon, AstronomicalUnit, Atmosphere, AtomicMassUnit, Atto, AU, AvoirdupoisOunce,
AvoirdupoisPound, Bag, BakersDozen, Bale, Bar, Barn, Barrel, Barye, Baud, Biot, Bit,
BoardFoot, BohrMagneton, Bolt, BritishThermalUnit, BTU, Bucket, Bushel, Butt, Cable,
Caliber, Calorie, Candle, Carat, Celsius, Cental, Centi, Centigrade, Centimeter, Century,
CGS, Chain, ChevalVapeur, Cicero, Convert, ConvertTemperature, Cord, Cubit, Cup, Curie,
Dalton, Day, Deca, Decade, Deci, Denier, Didot, DidotPoint, Diopter, Dozen, Drachma, Dyne,
ElectronVolt, Ell, Ephah, Erg, Exa, Fahrenheit, Fathom, Feet, Femto, Fermi, Fifth, Firkin,
FluidDram, FluidOunce, Foot, FootCandle, Fortnight, Furlong, Gal, Gallon, Gauss, Geepound,
Giga, Gilbert, Gill, Grade, Grain, Gram, GramWeight, Gravity, Gross, GrossHundredweight,
Hand, Hectare, Hecto, Hefner, Hogshead, Horsepower, Hour, Hundredweight, ImperialGallon, I
mperialPint, Inch, InchMercury, Jeroboam, Jigger, Kayser, Kilo, KilogramForce, KilogramWeight,
Knot, Lambert, League, Libra, LightYear, Link, Liter, Lumerg, Magnum, Maxwell, Mega,
MetricTon, Mho, Micro, Micron, Mil, Mile, Millennium, Milli, MillimeterMercury, Mina, Minim,
Minute, MKS, Month, Nano, NauticalMile, NetHundredweight, Nibble, Nit, Noggin, NuclearMagneton,
Obolos, Oersted, Omer, Ounce, Parsec, Peck, Pennyweight, Percent, Perch, Peta, Phot, Pica,
Pico, Pint, Poise, Pole, Pondus, Pony, Pound, Poundal, PoundForce, PoundsPerSquareInch,
PoundWeight, PrintersPoint, PSI, Puncheon, Quadrant, Quart, Quintal, Rad, Radian, Rankine,
RegisterTon, Reyn, Rhes, RightAngle, Rod, Roentgen, Rontgen, Rood, Rope, Rutherford,
Rydberg, Seam, Section, Shekel, ShortHundredweight, ShortTon, Shot, SI, SiderealSecond,
SiderealYear, Skein, Slug, SolarMass, Span, Stadion, Stadium, Statampere, Statcoulomb,
Statfarad, Stathenry, Statohm, StatuteMile, Statvolt, Steradian, Stere, Stilb, Stokes,
Stone, SurveyMile, Tablespoon, Talbot, Talent, Teaspoon, Tera, Therm, Ton, TonForce,
Tonne, Torr, Township, TropicalYear, TroyOunce, Tun, UKGallon, UKPint, Week, Wey,
WineBottle, XUnit, Yard, Year, Yocto, Yotta, Zepto, Zetta, Amp, Ampere, Becquerel,
Candela, Coulomb, Farad, Gray, Henry, Hertz, Joule, Kelvin, Kilogram, Lumen, Lux,
Meter, Mole, Ohm, Pascal, Siemens, Tesla, Volt, Watt, Weber}`
For more information on units and their use in
*Mathematica*, refer to the Documentation
Center and *The Beginner's
Guide to Mathematica Version 4* by Jerry Glynn and Theodore Gray.
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