In the following, only non-prefixed units are listed. To get a more detailed information about a unit, and to get information about prefixed units, use Julia help, e.g.
help?> Unitful.kW
+ Unitful.kW
+
+ A prefixed unit, equal to 10^3 W.
+
+ Dimension: 𝐋² 𝐌 𝐓⁻³
+
+ See also: Unitful.W.
For prefixes, see below.
Unitful.mol
The mole, the SI base unit for amount of substance.
Unitful.A
The ampere, the SI base unit of electric current.
Unitful.angstrom
+Unitful.Å
The angstrom, a metric unit of length defined as 1/10 nm.
Unitful.ft
The foot, a US customary unit of length defined as 12 inch.
Unitful.inch
The inch, a US customary unit of length defined as 2.54 cm.
Unitful.m
The meter, the SI base unit of length.
Unitful.mi
The mile, a US customary unit of length defined as 1760 yd.
Unitful.mil
The mil, a US customary unit of length defined as 1/1000 inch.
Unitful.yd
The yard, a US customary unit of length defined as 3 ft.
Unitful.cd
The candela, the SI base unit of luminous intensity.
Unitful.dr
The dram, a US customary unit of mass defined as 1/16 oz.
Unitful.g
A prefixed unit, equal to 10^-3 kg. Note that kg, not g, is the base unit.
Unitful.gr
The grain, a US customary unit of mass defined as 1/7000 lb.
Unitful.kg
The kilogram, the SI base unit of mass. Note that kg, not g, is the base unit.
Unitful.lb
The pound-mass, a US customary unit of mass defined as exactly 0.453,592,37 kg.
Unitful.oz
The ounce, a US customary unit of mass defined as 1/16 lb.
Unitful.slug
The slug, a US customary unit of mass defined as 1 lbf × s^2 / ft.
Unitful.u
The unified atomic mass unit, or dalton, a unit of mass defined as 1/12 the mass of an unbound neutral atom of carbon-12, equal to 1.660,539,066,60 × 10^-27 kg (the CODATA 2018 recommended value).
Unitful.K
The kelvin, the SI base unit of thermodynamic temperature.
Unitful.Ra
The rankine, a US customary unit of temperature defined as 5/9 K.
Unitful.°C
The degree Celsius, an SI unit of temperature, defined such that 0 °C = 273.15 K.
Unitful.°F
The degree Fahrenheit, a US customary unit of temperature, defined such that 0 °F = 459.67 Ra.
Unitful.d
The day, a unit of time defined as 24 hr.
Unitful.hr
The hour, a unit of time defined as 60 minutes.
Unitful.minute
The minute, a unit of time defined as 60 s. The full name minute is used instead of the symbol min to avoid confusion with the Julia function min.
Unitful.s
The second, the SI base unit of time.
Unitful.wk
The week, a unit of time, defined as 7 d.
Unitful.yr
The year, a unit of time, defined as 365.25 d.
Unitful.Gal
The gal, a CGS unit of acceleration, defined as 1 cm / s^2.
Unitful.ge
The nominal acceleration due to gravity in a vacuum near the surface of the earth, a unit of acceleration, defined by standard to be exactly 9.806,65 m / s^2.
Unitful.gn is a quantity (with units m/s^2) whereas Unitful.ge is a unit equal to gn.
Unitful.a
The are, a metric unit of area, defined as 100 m^2.
Unitful.ac
The acre, a US customary unit of area defined as 4840 yd^2.
Unitful.b
The barn, a metric unit of area, defined as 100 fm^2.
Unitful.ha
The hectare, a metric unit of area, defined as 100 a.
Unitful.Gauss
The gauss, a CGS unit of magnetic B-field strength, defined as 1 Mx / cm^2.
Unitful.T
The tesla, an SI unit of magnetic B-field strength, defined as 1 kg / (A × s^2).
Unitful.F
The farad, an SI unit of electrical capacitance, defined as 1 s^4 × A^2 / (kg × m^2).
Unitful.C
The coulomb, an SI unit of electric charge, defined as 1 A × s.
Unitful.P
The poise, a CGS unit of dynamic viscosity, defined as 1 dyn × s / cm^2.
Unitful.S
The siemens, an SI unit of electrical conductance, defined as 1 Ω^-1.
Unitful.Ω
The ohm, an SI unit of electrical resistance, defined as 1 V / A.
Unitful.btu
The British thermal unit, a US customary unit of heat defined by ISO 31-4 as exactly 1055.06 J.
Unitful.cal
The calorie, a unit of energy defined as exactly 4.184 J.
Unitful.erg
The erg, a CGS unit of energy, defined as 1 dyn × cm.
Unitful.eV
The electron-volt, a unit of energy, defined as q*V.
Unitful.J
The joule, an SI unit of energy, defined as 1 N × m.
Unitful.dyn
The dyne, a CGS unit of force, defined as 1 g × cm / s^2.
Unitful.lbf
The pound-force, a US customary unit of force defined as 1 lb × ge.
Unitful.N
The newton, an SI unit of force, defined as 1 kg × m / s^2.
Unitful.Bq
The becquerel, an SI unit of radioactivity, defined as 1 nuclear decay per s.
Unitful.Hz
The hertz, an SI unit of frequency, defined as 1 s^-1.
Unitful.Hz2π
A unit for convenience in angular frequency, equal to 2π Hz.
Unitful.rpm
Revolutions per minute, a unit of rotational speed, defined as 2π rad / minute.
Unitful.rps
Revolutions per second, a unit of rotational speed, defined as 2π rad / s.
Unitful.Oe
The oersted, a CGS unit of magnetic H-field strength, defined as 1000 A / (4π × m).
Unitful.H
The henry, an SI unit of electrical inductance, defined as 1 J / A^2.
Unitful.St
The stokes, a CGS unit of kinematic viscosity, defined as 1 cm^2 / s.
Unitful.lm
The lumen, an SI unit of luminous flux, defined as 1 cd × sr.
Unitful.Mx
The maxwell, a CGS unit of magnetic flux, defined as 1 Gauss × cm^2.
Unitful.Wb
The weber, an SI unit of magnetic flux, defined as 1 kg × m^2 / (A × s^2).
Unitful.kat
The katal, an SI unit of catalytic activity, defined as 1 mol of catalyzed substrate per s.
Unitful.M
A unit for measuring molar concentration, equal to 1 mol/L.
Unitful.W
The watt, an SI unit of power, defined as 1 J / s.
Unitful.atm
The standard atmosphere, a unit of pressure, defined as 101,325 Pa.
Unitful.Ba
The barye, a CGS unit of pressure, defined as 1 dyn / cm^2.
Unitful.bar
The bar, a metric unit of pressure, defined as 100 kPa.
Unitful.Pa
The pascal, an SI unit of pressure, defined as 1 N / m^2.
Unitful.psi
Pounds per square inch, a US customary unit of pressure defined as 1 lbf / inch^2.
Unitful.Torr
The torr, a unit of pressure, defined as 1/760 atm.
Unitful.c
The speed of light in a vacuum, a unit of speed, defined as exactly 2.997,924,58 × 10^8 m/s.
Unitful.c0 is a quantity (with units m/s) whereas Unitful.c is a unit equal to c0.
Unitful.V
The volt, an SI unit of electric potential, defined as 1 W / A.
Unitful.L
+Unitful.l
The liter, a metric unit of volume, defined as 1000 cm^3.
Unitful.pcm
Percentmille, a unit meaning parts per hundred thousand.
Unitful.percent
Percent, a unit meaning parts per hundred. Printed as "%".
Unitful.permille
Permille, a unit meaning parts per thousand. Printed as "‰".
Unitful.pertenthousand
Permyriad, a unit meaning parts per ten thousand. Printed as "‱".
Unitful.ppb
Perbillion, a unit meaning parts per billion (in the short-scale sense), i.e., 10^-9.
Unitful.ppm
Permillion, a unit meaning parts per million.
Unitful.ppq
Perquadrillion, a unit meaning parts per quadrillion (in the short-scale sense), i.e., 10^-15.
Unitful.ppt
Pertrillion, a unit meaning parts per trillion (in the short-scale sense), i.e., 10^-12.
Unitful.rad
The radian, a unit of angle. There are 2π rad in a circle.
Unitful.sr
The steradian, a unit of spherical angle. There are 4π sr in a sphere.
Unitful.°
The degree, a unit of angle. There are 360° in a circle.
| Unit | Name |
|---|
dB | Decibel |
B | Bel |
Np | Neper |
cNp | Centineper |
| Unit | Reference level |
|---|
dBHz | 1Hz |
dBm | 1mW |
dBV | 1V |
dBu | sqrt(0.6)V |
dBμV | 1μV |
dBSPL | 20μPa |
dBFS | RootPowerRatio(1) |
dBΩ | 1Ω |
dBS | 1S |
Unitful.G
A quantity representing the universal gravitational constant, equal to 6.674,30 × 10^-11 m^3 / (kg × s^2) (the CODATA 2018 recommended value).
Unitful.Na
A quantity representing Avogadro's constant, defined as exactly 6.022,140,76 × 10^23 / mol.
Unitful.R
A quantity representing the molar gas constant, defined as Na × k.
Unitful.R∞
A quantity representing the Rydberg constant, equal to 1.097,373,156,8160 × 10^-7 / m (the CODATA 2018 recommended value).
Unitful.Z0
A quantity representing the impedance of free space, a constant defined as μ0 × c.
Unitful.c0
A quantity representing the speed of light in a vacuum, defined as exactly 2.997,924,58 × 10^8 m/s.
Unitful.c0 is a quantity (with units m/s) whereas Unitful.c is a unit equal to c0.
Unitful.gn
A quantity representing the nominal acceleration due to gravity in a vacuum near the surface of the earth, defined by standard to be exactly 9.806,65 m / s^2.
Unitful.gn is a quantity (with units m/s^2) whereas Unitful.ge is a unit equal to gn.
Unitful.h
A quantity representing Planck's constant, defined as exactly 6.626,070,15 × 10^-34 J × s.
Unitful.k
A quantity representing the Boltzmann constant, defined as exactly 1.380,649 × 10^-23 J / K.
Unitful.me
A quantity representing the rest mass of an electron, equal to 9.109,383,7015 × 10^-31 kg (the CODATA 2018 recommended value).
Unitful.mn
A quantity representing the rest mass of a neutron, equal to 1.674,927,498,04 × 10^-27 kg (the CODATA 2018 recommended value).
Unitful.mp
A quantity representing the rest mass of a proton, equal to 1.672,621,923,69 × 10^-27 kg (the CODATA 2018 recommended value).
Unitful.q
A quantity equal to the elementary charge, the charge of a single electron, with a value of exactly 1.602,176,634 × 10^-19 C. The letter q is used instead of e to avoid confusion with Euler's number.
Unitful.ħ
A quantity representing the reduced Planck constant, defined as h / 2π.
Unitful.Φ0
A quantity representing the superconducting magnetic flux quantum, defined as h / (2 × q).
Unitful.ε0
+Unitful.ϵ0
A quantity representing the vacuum permittivity constant, defined as 1 / (μ0 × c^2).
Unitful.μ0
A quantity representing the vacuum permeability constant, defined as 4π × 10^-7 H / m.
Unitful.μB
A quantity representing the Bohr magneton, equal to q × ħ / (2 × me).
Unitful.σ
A quantity representing the Stefan-Boltzmann constant, defined as π^2 × k^4 / (60 × ħ^3 × c^2).
| Prefix | Name | Power of Ten |
|---|
| y | yocto | -24 |
| z | zepto | -21 |
| a | atto | -18 |
| f | femto | -15 |
| p | pico | -12 |
| n | nano | -9 |
| μ | micro | -6 |
| m | milli | -3 |
| c | centi | -2 |
| d | deci | -1 |
| da | deca | 1 |
| h | hecto | 2 |
| k | kilo | 3 |
| M | mega | 6 |
| G | giga | 9 |
| T | tera | 12 |
| P | peta | 15 |
| E | exa | 18 |
| Z | zetta | 21 |
| Y | yotta | 24 |