**h**: one hour = 3600 s

**min**: one minute = 60 s

**m**:  meter

**g**:  one gram = 1e-3 kg

**s**: second

**A**: ampere

**K**: kelvin

**mol**: mole

**cd**: candela

**Hz**: one hertz = 1 s^-1

**N**: newton

**Pa**: pascal

**J**: joule

**W**: watt

**C**: coulomb

**V**: volt

**ohm**: ohm; variant: **Ohm**

**S**: Siemens (the inverse of one ohm)

**F**: farad (the electric capacity unit, not the faraday)

**T**: tesla

**Wb**: weber

**H**: henry

**lm**: lumen (1 lumen = 1 lux)

**lx**: lux

**Bq**: becquerel (1 Bq = 1 Hz)

**Gy**: gray

**Sv**: sievert

**rad**: radian (1 rad = 1 no_unit, where no_unit has the units exponents { 0, 0, 0, 0, 0, 0, 0})

**sr**: steradian (1 sr = 1 no_unit)

*nothing*: no_unit; a number with no unit can be considered as written in radian for example

**°**: angular degree (1° = pi/180)

**'**: angular minute (1' = pi/10800)

**''**: angular second (1'' = pi/648000)

**tr**: turn (1 tr = 2*pi)

**rpm**: revolution per minute (1 rpm = pi/30 Hz)

**b**: barn (1b = 1e-28 m^2)

**a**: are (1a = 100 m^2)

**L**: liter

**t**: ton (1 ton = 1e3 kg)

**bar**: bar (1 bar = 1e5 Pa)

**eV**: electron-volt (1eV = 1.60218e-19 J)

**uma**: atomic mass unit (1 uma = 1.66054e-27 kg)

**°A**: ångström (1 ångström = 1e-10 m)
