# Table of Physical Units

This table contains links to definitions of physicalquantities, phenomena, and units,primarily in the International System of Units ( SI )and the meter-kilogram-second ( MKS ) system.

Base Units |
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Quantity or phenomenon (and symbol) |
Standard International unit (and symbol) |
Alternate units (and symbols) |

displacement ( d ) |
meter (m) | centimeter (cm) foot (ft) |

mass ( m ) |
kilogram (kg) | gram (g) |

time ( t ) |
second (s or sec) | hour (h or hr) mean solar day (dy) solar year (yr) |

current ( I ) |
ampere (A) | statampere (statA) abampere (abA) |

temperature ( T ) |
kelvin (ºK or K) | degree Celsius (ºC or C) degree Fahrenheit (ºF or F) degree Rankine (ºR or R) |

amount of substance ( /TERM> | mole (mol) | -- |

luminous intensity ( B or L ) |
candela (cd) | -- |

Derived Units |
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Quantity or phenomenon (and symbol) |
Standard International unit (and symbol) |
Alternate units (and symbols) |

area ( A ) |
meter squared (m ^{2} ) |
centimeter squared (cm ^{2} )circular mil foot squared (ft ^{2} ) |

volume ( V ) |
meter cubed (m ^{3} ) |
centimeter cubed (cm ^{3} )foot cubed (ft ^{3} ) |

material density ( D ) |
kilogram per meter cubed (kg/m ^{3} or kg · m ^{-3} ) |
gram per centimeter cubed (g/cm ^{3} or g · cm ^{-3} ) |

specific volume | meter cubed per kilogram (m ^{3} /kg or m ^{3} · kg ^{-1} ) |
centimeter cubed per gram (cm ^{3} /g or cm ^{3} · g ^{-1} ) |

amount of substance concentration | mole per meter cubed (mol/m ^{3} or mol · m ^{-3} ) |
-- |

force ( F or F )weight |
newton (N) | dyne (dyn) pound (lb) |

impulse ( I or I ) |
newton-second (N · s) | dyne-second (dyn · s) |

work ( w ) |
newton-meter (N · m) | dyne-centimeter (dyn · cm) |

pressure ( P ) |
pascal (Pa) | dyne per centimeter squared (dyn/cm ^{2} or dyn · cm ^{-2} ) |

speed ( s )velocity ( v or v ) |
meter per second (m/s or m · s ^{-1} ) |
centimeter per second (cm/s or cm · s ^{-1} ) |

momentum ( p or p ) |
kilogram-meter per second (kg · m/s or kg · m · s ^{-1} ) |
gram-centimeter per second (g · cm/s or g · cm · s ^{-1} ) |

acceleration ( a or a ) |
meter per second squared (m/s ^{2} or m · s ^{-2} ) |
centi meter per second squared (cm/s ^{2} or cm · s ^{-2} )gravity (g) |

current density | ampere per meter squared (A/m ^{2} or A · m ^{-2} ) |
ampere per centimeter squared (A/cm ^{2} or A · cm ^{-2} ) |

electromotive force (emf) voltage ( V or E ) |
volt (V) | statvolt (statV) abvolt (abV) |

resistance ( R ) |
ohm | statohm abohm |

conductance ( G ) |
siemens (S) | statsiemens (statS) absiemens (abS) |

electric field strength ( E ) |
volt per meter (V/m or V · m ^{-1} ) |
microvolt per meter (µV/m or µV · m ^{-1} ) |

electric flux density ( D ) |
coulomb per meter squared (C/m ^{2} or C · m ^{-2} ) |
coulomb per centimeter squared (C/cm ^{2} or C · cm ^{-2} ) |

electric charge density | coulomb per meter cubed (C/m ^{3} or C · m ^{-3} ) |
coulomb per centimeter cubed (C/cm ^{3} or C · cm ^{-3} ) |

permittivity | farad per meter (F/m or F · m ^{-1} ) |
picofarad per meter (pF/m or pF · m ^{-1} )microfarad per meter (µF/m or µF · m ^{-1} ) |

power ( P ) |
watt (W) | horsepower (hp) statwatt (statW) abwatt (abW) |

energy ( E ) |
joule (J) | erg (erg) watt hour (Wh) kilowatt hour (kWh) |

heat ( h ) |
calorie (cal) | kilocalorie (kcal) British thermal unit (Btu) |

magnetomotive force ( M ormmf) |
ampere-turn (AT) | gilbert (G) |

charge quantity ( Q ) |
coulomb (C) | statcoulomb (statC) abcoulomb (abC) faraday |

capacitance ( C ) |
farad (F) | statfarad (statF) abfarad (abF) |

inductance ( L ) |
henry (H) | stathenry (statH) abhenry (abH) |

magnetic flux | weber (Wb) | maxwell (Mx) |

magnetic flux density | tesla (T) | gauss (G) |

magnetic field strength ( H ) |
ampere per meter (A/m or A · m ^{-1} ) |
oersted (Oe) |

permeability ( µ ) |
henry per meter (H/m or H · m ^{-1} ) |
microhenry per meter (µH/m or µH · m ^{-1} ) |

electromagnetic field strength | watt per meter squared (W/m ^{2} or W · m ^{-2} ) |
microwatt per meter squared (µW/m ^{2} or µW · m ^{-2} ) |

radiant intensity | watt per steradian (W/sr or W · sr ^{-1} ) |
-- |

luminous flux | lumen (lm) | -- |

luminance | candela per meter squared (cd/m ^{2} or cd · m ^{-2} ) |
candela per centimeter squared (cd/cm ^{2} or cd · cm ^{-2} ) |

illuminance | lux (lx) | watt per meter squared (W/m ^{2} or W · m ^{-2} ) |

plane angular measure | radian (rad) | angular degree (deg or º) |

solid angular measure | steradian (sr) | angular degree (deg or º) |

angular speed angular velocity |
radian per second (rad/s or rad · s ^{-1} ) |
degree per second (deg/s or deg · s ^{-1} ) |

angular acceleration | radian per second squared (rad/s ^{2} or rad · s ^{-2} ) |
degree per second squared (deg/s ^{2} or deg · s ^{-2} ) |

ionizing radiation | becquerel (Bq) | curie (cu) |

absorbed ionizing radiation dose | gray (Gy) | rad (rad) |

frequency ( f ) |
hertz (Hz) | kilohertz (kHz) megahertz (MHz) gigahertz (GHz) terahertz (THz) |

wavelength | meter (m) | centimeter (cm) millimeter (mm) micrometer (µm or µ) nanometer (nm) Angström (Å) |

wave number | reciprocal meter (m ^{-1} ) |
-- |

data quantity | bit (b) byte (B) |
kilobit (kb) megabit (Mb) Gigabit (Gb) terabit (Tb) petabit (Pb) exabit (Eb) kilobyte (KB) megabyte (MB) gigabyte (GB) terabyte (TB) petabyte (PB) exabyte (EB) |

bandwidth (signal) | Hertz (Hz) | kilohertz ( kHz ) megahertz ( MHz ) |

bandwidth (data transfer rate) | bit per second ( bps ) | kilobit per second (Kbps) megabit per second (Mbps) gigabit per second (Gbps) character per second (cps) |