Built In Units

{| cellspacing="0" cellpadding="2" border="1"
| Symbol || Name || Category || Value
|-
| &deg; || Degree || Angle || &pi;/180
|-
| &deg;C || Celsius || Temperature || K-273.15
|-
| &deg;F || Fahrenheit || Temperature || (9/5)K-459.67
|-
| &deg;Ra || Rankine || Temperature || 
|-
| &deg;Re || Réaumur || Temperature || 
|-
| A || Ampere || Electric Current || 
|-
| acre || Acre || Area || 4046.8564224 m<sup>2</sup>
|-
| amp || Ampere || Electric Current || 
|-
| Angstrom || Angstrom || Length  || m/10<sup>10</sup>
|-
| atm || Atmosphere || Pressure || 101,325 kg/m s<sup>2</sup>
|-
| B || Byte || Information || 8 bit
|-
| bar || Bar || Pressure  || 100,000 kg/m s<sup>2</sup>
|-
| barn || Barns || Area || m<sup>2</sup>/10<sup>28</sup>
|-
| bit || Bit || Information || 
|-
| bohr || Bohr || Length  || 52,918 m /10<sup>11</sup>
|-
| BTU || British thermal unit || Energy  || 1055.05585262 kg m<sup>2</sup>/s<sup>2</sup>
|-
| byte || Byte || Information || 8 bit
|-
| c || Speed of light || Velocity || 299,792,458 m/s
|-
| C || Coulumb || Charge || A s
|-
| cal || Calorie || Energy  || 4.1868 kg m<sup>2</sup>/s<sup>2</sup>
|-
| cd || Candela || Luminous intensity || 
|-
| cm || Centimeter || Length  || m/100
|-
| coul || Coulumb || Charge || A s
|-
| day || Day || Time || 86,400 s
|-
| deg || Degree || Angle || &pi;/180
|-
| dm || Decimeter || Length  || m/10
|-
| dpi || Dots per inch || Resolution || 39.3700787401575/m
|-
| dyn || Dyne || Force || kg m/100,000 s<sup>2</sup>
|-
| dyne || Dyne || Force || kg m/100,000 s<sup>2</sup>
|-
| e || Number e || Constant || 2.7182818284590451
|-
| e || Elementary charge || Charge || 1.60217648740*10<sup>14</sup> As
|-
| erg || Unit of energy/work || Energy || 10<sup>-7</sup kg m<sup>2</sup/s<sup>2</sup
|-
| F || Farad || Capacitance || A<sup>2</sup>s<sup>4</sup>/kg m<sup>2</sup>
|-
| farad || Farad || Capacitance || A<sup>2</sup>s<sup>4</sup>/kg m<sup>2</sup>
|-
| ft || Foot || Length || 0.3048 m
|-
| furlong || Furlong || Length || 201.168 m
|-
| g || Gravitational acceleration || Viscosity, dynamic || 9.80665 m/s<sup>2</sup>
|-
| G || Gauss || Magnetic flux density || kg/ 10,000 A*s<sup>2</sup>
|-
| G<sub>N</sub> || Newtonian constant of gravitaion || Constant || 6.6742867*10<sup>-11</sup> m<sup>3</sup>/kg s<sup>2</sup>
|-
| gal || Gallon || Volume || 0.0037854119678 m<sup>3</sup>
|-
| gauss || Gauss || Magnetic flux density || kg/ 10,000 A*s<sup>2</sup>
|-
| GB || Gigabyte || Information || 8,000,000,000 bit
|-
| GHz || Gigahertz || Frequency || 1,000,000,000/s
|-
| GiB || Gibibyte || Information || 8589934592 bit
|-
| GJ || Gigajoule || Energy || 1,000,000,000 kg m<sup>2</sup>/s<sup>2</sup>
|-
| gm || Gram || Mass || kg/1000
|-
| GN || Giganewton || Force || 1,000,000,000 kg m/s<sup>2</sup>
|-
| gon || Grad || angle || &pi;/200
|-
| GPa || Gigapascal || Pressure || 1,000,000,000 kg/m s<sup>2</sup>
|-
| grad || Grad || Angle || &pi;/200
|-
| gram || Gram || Mass || kg/1000
|-
| GW || Gigawatt || Power || 1,000,000,000 kg m<sup>2</sup>/s<sup>3</sup>
|-
| Gy || Gray || Dose || m<sup>2</sup>/s<sup>2</sup>
|-
| h || Planck constant || Constant || 6.6260689633*10<sup>-34</sup> kg m<sup>2</sup>/s
|-
| H || Henry || Induction || kg m<sup>2</sup>/s<sup>2</sup>A<sup>2</sup>
|-
| hectare || Hectare || Area || 10,000 m<sup>2</sup>
|-
| henry || Henry || Induction || kg m<sup>2</sup>/s<sup>2</sup>A<sup>2</sup>
|-
| hhp || Water horsepower || Power || 746.043 kg m<sup>2</sup>/s<sup>3</sup>
|-
| hp || Horsepower || Power || 745.69987158227 kg m<sup>2</sup>/s<sup>3</sup>
|-
| hr || Hour || Time || 3600 s
|-
| Hz || Hertz || Frequency || 1/s
|-
| i || Imaginary unit || constant || -1<sup>1/2</sup>
|-
| in || Inch || Length || 0.0254 m
|-
| J || Joule || Energy || kg m<sup>2</sup>/s<sup>2</sup>
|-
| joule || Joule || Energy || kg m<sup>2</sup>/s<sup>2</sup>
|-
| k || Boltsmann constant || Constant || 1.380650424*10<sup>-23</sup> kg m<sup>2</sup>/K s<sup>2</sup> 
|-
| K || Kelvin || Temperature || 
|-
| kA || Kiloampere || Electric current || 1000 A
|-
| katal || Katal || Catalytic activity || mol/s
|-
| kB || Kilobyte || Information || 8000 bit
|-
| kcal || Kilocalorie || Energy || 4186.8 kg m<sup>2</sup>/s<sup>2</sup>
|-
| kg || Kilogram || Mass || 
|-
| kgf || Kilogram Force || Force || 9.80665 kg m/s<sup>2</sup>
|-
| kHz || Kilohertz || Frequency || 1000/s
|-
| kiB || Kibibyte || Information || 8192 bit
|-
| kip || Kip || Force || 4448.2216152605 kg m/s<sup>2</sup>
|-
| kJ || Kilojoule || Energy || 1000 kg m<sup>2</sup>/s<sup>2</sup>
|-
| km || Kilometer || Length || 1000 m
|-
| kmol || Kilomole || Substance || 1000 mol
|-
| kn || Knot || Velocity || 463/900 m/s
|-
| kN || Kilonewton || Force || 1000 kg m/s<sup>2</sup>
|-
| knot || Knot || Velocity || 463/900 m/s
|-
| kPa || Kilopascal || Pressure || 1000 kg/m s<sup>2</sup>
|-
| kph || Kilometers per hour || Velocity || 5/18 m/s
|-
| ks || Kilosecond || Time || 1000 s
|-
| ksf || Kilo-pounds per square foot || Pressure || 47880.2589803358 Pa
|-
| ksi || Kilo-pounds per square inch || Pressure || 6894757.29316836 Pa
|-
| kV || Kilovolts || Potential || 1000 m<sup>2</sup>kg/s<sup>3</sup>A
|-
| kW || Kilowatt || Power || 1000 kg m<sup>2</sup>/s<sup>3</sup>
|-
| k&Omega; || Kiloohm || Resistance || 1000 kg m<sup>2</sup>/s<sup>3</sup>A<sup>2</sup>
|-
| L || Liter || Volume || m<sup>3</sup>/1000
|-
| lb || Pound || Mass || 0.45359237 kg
|-
| lbf || Pound force || Force || 4.4482216152605 kg m/s<sup>2</sup>
|-
| lbmol || Pount-mole || Substance || 453.59237 mol
|-
| liter || Liter || Volume || m<sup>3</sup>/1000
|-
| lm || Lumen || luminous intensity || cd
|-
| lx || Lux || Illuminance || cd/m<sup>2</sup>
|-
| m || Meter || Length || 
|-
| mA || Milliampere || Electric Current || A/1000
|-
| MB || Megabyte || Information || 8,000,000 bit
|-
| mC || Millicoulumb || Charge || A s/1000
|-
| m<sub>e</sub> || Electron mass || Mass || 9.1093821545*10<sup>-31</sup> kg
|-
| mF || Millifarad || Capacitance || A<sup>2</sup>s<sup>4</sup>/1000 kg m<sup>2</sup>
|-
| mg || Milligram || Mass || kg/1,000,000
|-
| Mg || Megagram || Mass || 1000 kg
|-
| mH || Millihenry || Inductance || kg m<sup>2</sup>/1000 s<sup>2</sup>A<sup>2</sup>
|-
| MHz || Megahertz || Frequency || 1,000,000/s
|-
| mi || Mile || Length || 1609.344 m
|-
| MiB || Mebibytes || Information || 8,388,608 bit
|-
| micron || Micrometer || Length || m/1,000,000
|-
| mile || Mile || Length || 1609.344 m
|-
| min || Minute || Time || 60 s
|-
| mJ || Millijoule || Energy ||  kg m<sup>2</sup>/1000 s<sup>2</sup>
|-
| MJ || Megajoule || Energy || 1,000,000 kg m<sup>2</sup>/s<sup>2</sup>
|-
| mL || Millileter || Volume || m<sup>3</sup>/1,000,000
|-
| mm || Millimeter || Length || m/1000
|-
| mmol || Millimole || Substance || mol/1000
|-
| m<sub>n</sub> || Neutron mass || Mass ||  1.67492721184*10<sup>-27</sup> kg
|-
| mN || Millinewton || Force ||  kg m/1000 s<sup>2</sup>
|-
| MN || Meganewton || Force || 1,000,000 kg m/s<sup>2</sup>
|-
| mol || Mole || Substance || 
|-
| mole || Mole || Substance || 
|-
| m<sub>p</sub> || Proton mass || Mass ||  1.67262163783*10<sup>-27</sup> kg
|-
| MPa || Megapascal || Pressure || 1,000,000 kg/m s<sup>2</sup>
|-
| mph || Miles per hour || Velocity || 1397/3125 m/s
|-
| ms || Millisecond || Time || s/1000
|-
| m<sub>u</sub> || Unified atomic mass || Mass ||  1.6605388628*10<sup>-27</sup> kg
|-
| mV || Millivolts || Potential || m<sup>2</sup>kg/1000 s<sup>3</sup>A
|-
| mW || Milliwatts || Power || kg m<sup>2</sup>/1000 s<sup>3</sup>
|-
| MW || Megawatts || Power || 1,000,000 kg m<sup>2</sup>/s<sup>3</sup>
|-
| M&Omega; || Megaohm || Resistance || 1,000,000 kg m<sup>2</sup>/s<sup>3</sup>A<sup>2</sup>
|-
| N || Newton || Force ||  kg m/s<sup>2</sup>
|-
| N<sub>A</sub> || Avogadro's number || Constant || 6.022141510*10<sup>23</sup> / mol
|-
| nA || Nanoampere || Current || A/1,000,000,000
|-
| nC || Nanocoulumb || Charge || A s/1,000,000,000
|-
| nF || Nanofarad || Capacitance || A<sup>2</sup>s<sup>4</sup>/1,000,000,000 kg m<sup>2</sup>
|-
| nm || Nanometer || Length || m/1,000,000,000
|-
| ns || Nanosecond || Time || s/1,000,000,000
|-
| nV || Nanovolts || Potential || m<sup>2</sup>kg/1,000,000,000 s<sup>3</sup>A
|-
| nW || Nanowatts || Power || kg m<sup>2</sup>/1,000,000,000 s<sup>3</sup>
|-
| ohm || Ohm || Resistance || kg m<sup>2</sup>/s<sup>3</sup>A<sup>2</sup>
|-
| oz || Ounce || Mass || 0.028349523125 kg
|-
| P || Poise || Viscosity, dynamic || kg/10 m s
|-
| pA || Picoampere || Electric current || A/10<sup>12</sup>
|-
| Pa || Pascal || Pressure || kg/m s<sup>2</sup>
|-
| pC || Picocoulumb || Charge || A s/10<sup>12</sup>
|-
| pF || Picofarad || Capacitance || A<sup>2</sup>s<sup>4</sup>/10<sup>12</sup> kg m<sup>2</sup>
|-
| pm || Picometer || Length || m/10<sup>12</sup>
|-
| poise || Poise || Viscosity, dynamic || kg/10 m s
|-
| ps || Picosecond || Time || s/10<sup>12</sup>
|-
| psf || Pounds per square foot || Pressure || 47.8802589803358 kg/m s<sup>2</sup>
|-
| psi || Pounds per square inch || Pressure || 6894.75729316836 kg/m s<sup>2</sup>
|-
| pV || Picovolts || Potential || m<sup>2</sup>kg/10<sup>12</sup> s<sup>3</sup>A
|-
| pW || Picowatts || Power || kg m<sup>2</sup>/10<sup>12</sup> s<sup>3</sup>
|-
| R || Gas constant || Constant || 8.31447215 kg m<sup>2</sup>/K mol s<sup>2</sup>
|-
| rad || Radian || Angle || 1
|-
| radpm || Radians per minute || Frequency || 1/60s
|-
| rev || Revolution || Angle || 2&pi;
|-
| rph || Revolutions per hour || Frequency || &pi;/1800s
|-
| rpm || Revolutions per minute || Frequency || &pi;/30s
|-
| s || Second || Time || 
|-
| sec || Second || Time || 
|-
| slug || Slug || Mass || 14.5939029372064 kg
|-
| Smoot || Smoot || Length || 1.7018 m
|-
| St || Stokes || Viscosity, kinematic || m<sup>2</sup>/10,000 s
|-
| stokes || Stokes || Viscosity, kinematic || m<sup>2</sup>/10,000 s
|-
| Sv || Sievert || Dose || m<sup>2</sup>/s<sup>2</sup>
|-
| t || Metric ton || Mass || 1000 kg
|-
| T || Tesla || Magnetic flux density || kg/A s<sup>2</sup>
|-
| TB || Terabyte || information || 8,000,000,000,000 bit
|-
| tesla || Tesla || Magnetic flux density || kg/A s<sup>2</sup>
|-
| TiB || Tebibyte || Information || 8,796,093,022,208 bit
|-
| TJ || Terajoule || Energy || 10<sup>12</sup> kg m<sup>2</sup>/s<sup>2</sup>
|-
| TN || Teranewton || Force || 10<sup>12</sup> kg m/s<sup>2</sup>
|-
| ton || Ton || Mass || 907.18474 kg
|-
| tonf || Ton Force || Force || 8896.443230521 kg m/s<sup>2</sup>
|-
| tonne || Metric Ton || Mass || 1000 kg
|-
| tonnef || Metric Ton Force || Force || 9806.65 kg m/s<sup>2</sup>
|-
| torr || Torr || Pressure || 133.322368421053 kg/m s<sup>2</sup>
|-
| V || Volts || Potential || m<sup>2</sup>kg/s<sup>3</sup>A
|-
| volt || Volts || Potential || m<sup>2</sup>kg/s<sup>3</sup>A
|-
| W || Watt || Power || kg m<sup>2</sup>/s<sup>3</sup>
|-
| watt || Watt || power || kg m<sup>2</sup>/s<sup>3</sup>
|-
| yd || Yard || length || 0.9144 m
|-
| yr || Year || Time || 31,556,925.975 s
|-
| &mu;A || Microampere || Current || A/1,000,000
|-
| &mu;C || Microcoulumb || Charge || A s/1,000,000
|-
| &mu;F || Microfarad || Capacitance || A<sup>2</sup>s<sup>4</sup>/1,000,000 kg m<sup>2</sup>
|-
| &mu;g || Microgram || Mass || kg/1,000,000
|-
| &mu;H || Microhenry || Inductance || kg m<sup>2</sup>/1,000,000 s<sup>2</sup>A<sup>2</sup>
|-
| &mu;m || Micrometer || Length || m/1,000,000
|-
| &mu;mol || Micromole || Substance || mol/1,000,000
|-
| &mu;N || Micronewton || Force ||  kg m/1,000,000 s<sup>2</sup>
|-
| &mu;s || Microsecond || Time || s/1,000,000
|-
| &mu;V || Microvolts || Potential || m<sup>2</sup>kg/1,000,000 s<sup>3</sup>A
|-
| &mu;W || Microwatt || Power || kg m<sup>2</sup>/1,000,000 s<sup>3</sup>
|-
| &Omega; || Ohm || Resistance || kg m<sup>2</sup>/s<sup>3</sup>A<sup>2</sup>
|-
| &pi; || Number pi || Constant || 3.1415926535897931
|-
| &mu;<sub>0</sub> || Magnetic constant || Constant || 4&pi;*10<sup>-7</sup> kg m/s<sup>2</sup> A<sup>2</sup>
|}

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