List of Units in the UoM (Unit of Measurement)

units
uom
Tags: #<Tag:0x00007f0147366e98> #<Tag:0x00007f0147366ce0>

(Vincent Regaud) #1

List of Units

List of the unit available with the UoM (Unit of Measurement) types

Imperial:

Type Unit Symbol
Pressure Inch of Mercury inHg
Temperature Fahrenheit °F
Speed Miles per Hour mph
Length Inch in
Length Foot ft
Length Yard yd
Length Chain ch
Length Furlong fur
Length Mile mi
Length League lea

SI:

Type Unit Symbol
Acceleration Metre per square Second m/s2
AmountOfSubstance Mole mol
Angle Radian rad
Angle Degree °
Angle Minute Angle
Angle Second Angle ‘’
Area Square Metre m2
ArealDensity Dobson Unit DU
CatalyticActivity Katal kat
Dimensionless Percent %
Dimensionless Parts per Million ppm
Dimensionless Decibel dB
ElectricPotential Volt V
ElectricCapacitance Farad F
ElectricCharge Coulomb C
ElectricConductance Siemens S
ElectricCurrent Ampere A
ElectricInductance Henry H
ElectricResistance Ohm Ω
Energy Joule J
Energy Watt Second Ws
Energy Watt Hour Wh
Energy KiloWatt Hour kWh
Force Newton N
Frequency Hertz Hz
Illuminance Lux lx
Intensity Irradiance W/m²
Length Metre m
Length Kilometre km
LuminousFlux Lumen lm
LuminousIntensity Candela cd
Temperature Kelvin K
Temperature Celcius °C
MagneticFlux Weber Wb
MagneticFluxDensity Tesla T
Mass Kilogram kg
Mass Gram g
Power Watt W
Pressure Pascal Pa
Pressure hectoPascal hPa
Pressure Bar bar
Pressure Millibar mbar
Pressure Millimetre of Mercury mmHg
Radioactivity Becquerel Bq
RadiationDoseAbsorbed Gray Gy
RadiationDoseEffective Sievert Sv
SolidAngle Steradian sr
Speed Metre per Second m/s
Speed Kilometre per Hour km/h
Speed Knot kn
Time Second s
Time Minute min
Time Hour h
Time Day d
Time Week week
Time Year y
Volume Cubic Metre m3

Prefixes:

Name Symbol Value
Yotta Y 10²⁴
Zetta Z 10²¹
Exa E 10¹⁸
Peta P 10¹⁵
Tera T 10¹²
Giga G 10⁹
Mega M 10⁶
Kilo k 10³
Hecto h 10²
Deca da 10
Deci d 10⁻¹
Centi c 10⁻²
Milli m 10⁻³
Micro µ 10⁻⁶
Nano n 10⁻⁹
Pico p 10⁻¹²
Femto f 10⁻¹⁵
Atto a 10⁻¹⁸
Zepto z 10⁻²¹
Yocto y 10⁻²⁴

To use the prefixes simply add the prefix to the unit symbol (Above).
Examples:

  • milliAmpere - mA
  • centiMetre - cm
  • kiloWatt - kW

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(Jerome Luckenbach) #2

Many thanks for this overview! :heartbeat:

One question:

Could this be ElectricResistance?
Not sure about it.

Maybe this would be good as a wiki post, which can be improved/adapted by others as well. :slight_smile:


(Kuba Wolanin) #3

I’d say it’s a great candidate for a section in an official documentation :wink:

Here you can modify that page - https://github.com/eclipse/smarthome/edit/master/docs/documentation/concepts/units-of-measurement.md


(Vincent Regaud) #4

Corrected

Done


(Vincent Regaud) #5

Done


(Marco Salinardi) #6

This is not working, correct one is

ElectricPotential

And Power should be comprensive of VA for apparent power and VAR for reactive power. W is only for the actual active Power


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