s S second P s m S metre P m meter P metre kg S kilogram P kg A S ampere P A K S kelvin P K degK P K deg_K P K degreeK P K mol S mole P mol rad S radian P rad sr S steradian P sr # # --- standard named units --- # Hz S 1/s hertz P Hz N S kg.m.s-2 newton P N Pa S N.m-2 pascal P Pa Pascal P Pa J S N.m joule P J W S J/s watt P W C S A.s coulomb P C V S J/C volt P V F S C/V ohm S V/A S S A/V Wb S V.s weber P Wb farad P coulomb/volt T S Wb.m-2 tesla P Wb.m-2 H S Wb.A-1 degC S K @ 273.15 deg_C S K @ 273.15 degree_C S K @ 273.15 degree_c S K @ 273.15 degreeC S K @ 273.15 Celsius P K @ 273.15 celsius P K @ 273.15 centigrade P K @ 273.15 degree_R S K / 1.8 degree_f S degree_R @ 459.67 degree_F S degree_R @ 459.67 Fahrenheit P degree_F fahrenheit P degree_F degF S degree_F deg_F S degree_F degreeF S degree_F lm S cd.sr lx S lm.m-2 Bq S s-1 Gy S J.kg-1 Sv S J.kg-1 # # === non-SI units === # # --- basic numbers --- # pi N 3.141592653589793238462 # # --- nondimensional units --- # percent S 1e-2 % S 1e-2 permil S 1e-3 # # --- length --- # fermi P 1.0e-15 m angstrom P 1.0e-10 m micron P 1.0e-6 m astronomical_unit N 1.49597870e11 m astronomical_units N 1.49597870e11 m Au S astronomical_unit parsec P 3.0857e16 m pc S parsec light_year N 9.46e15 m light_years N 9.46e15 m ly S light_year nautical_mile N 1852 m nautical_miles N 1852 m # inch P 2.54 cm in S inch foot N 12 inch feet N foot ft N foot yard P 6 feet yd P yard chain P 22 yard mile P 1760 yard # # --- time --- # minute P 60 s min S 60 s hour P 60 min hr S 60 min h S 60 min day P 24 hour d S 24 hour Julian_year P 365.25 day common_year P 365 day # # --- date --- # # date is NOT time intentionally # pentad P month P 6 pentad mon S month year P 12 month yr S year century P 100 year # # --- area --- # are P 100 m2 a S are hectare P 100 are litre P 1.0e-3 m3 L S litre acre P 10 chain2 ac S acre # # --- angle --- # degree P pi.rad/180 angular_degree P degree minute_angle P pi.rad/180/60 angular_minute P minute_angle second_angle P pi.rad/180/60/60 angular_second P second_angle degree_N S degree degree_E S degree degree_W S degree degree_S S degree degree_north S degree_N degree_east S degree_E degree_west S degree_W degree_south S degree_S degrees_north S degree_N degrees_east S degree_E degrees_west S degree_W degrees_south S degree_S # # --- mass --- # ton P 1000 kg tonne P ton t S ton gram P kg/1000 g S kg/1000 pound P 453.6 g lb S pound ounce P pound / 16 oz S ounce # # --- CGS --- # dyne P g.cm.s-2 dyn S g.cm.s-2 bar S 1e6 dyn.cm-2 mb S bar / 1000 millibar P bar / 1000 gal P cm s-2 Gal S cm s-2 mgal S cm s-2 / 1000 erg S dyn cm erg P dyn cm poise P dyn s / cm2 P S poise stokes P cm2 / s St S stokes gauss P T / 10000 G S gauss # # --- conventional --- # calorie P 4.18605 J cal S calorie kgf S kilogram-force force S 9.80665 m.s-2 knot P nautical_mile / hour horse_power N 75 m kilogram-force / s atmosphere P 101325 Pa atm S atmosphere light_speed N 299792458 m/s mph S mile / hour kph S km / hour torr P 133.322 Pa psi S pound-force / inch2 gravity S 9.806650 meter/second2 conventional_mercury S gravity 13595.10 kg/m3 mercury S conventional_mercury Hg S mercury hg S mercury