Quantities & Units

📏 Working with Quantities & Units

The application uses a set of predefined default units for each quantity type (e.g., length, pressure, temperature).

🔁 Input Flexibility

When using the user interface, you can input values using different units. The software will automatically convert your input into the default unit for internal calculations.

💻 Scripting with Lua

When writing Lua scripts, always provide values using default units. If you want to use a different unit in your code, you must manually convert it using the command:

ConvertUnit(value, fromUnit, toUnit)

⚠️ Default units are always the first unit defined for each quantity in the internal database.

📚 Useful API Commands

Check the API Guide for more useful functions that let you:

List all available units and quantities
Convert values between units
Retrieve unit symbols and names

Unitless (UL)

SI:

Unitless (ul)

Length (LE)

SI: Length

Meter (m)
Inch (in)
Feet (ft)
Millimeter (mm)
Centimeter (cm)
Yard (yds)
Kilometer (km)

Mass (MA)

SI: Mass

kilogram (kg)
Pound (lbs)
Gram (gr)
Ounce (oz)

Time (TI)

SI: Time

second (s)
Minute (min)
Hour (hr)
Milisecond (ms)

Electric current (EC)

SI: ElectricCurrent

ampere (A)

Absolute temperature (AT)

SI: ThermodynamicTemperature

kelvin (K)

Amount of substance (AS)

SI: AmountOfSubstance

mole (mol)

Luminous intensity (LI)

SI: LuminousIntensity

candela (cd)

Angle (AN)

SI: Angle

radian (rad)
Degree (°)
Gradian (gon)

Solid angle (SA)

SI: SolidAngle

steradian (sr)

Frequency (FR)

SI: Frequency

hertz (Hz)
decahertz (daHz)
hectohertz (hHz)
kilohertz (kHz)
megahertz (MHz)
gigahertz (GHz)
terahertz (THz)
petahertz (PHz)

Force (FO)

SI: Force

newton (N)
kilonewton (kN)
dyne (dyn)
joule/meter (J/m)
gram-force (gf)
kilogram-force (kgf)
pound-force (lbf)
ounce-force (ozf)
kilopound (kip)

Pressure (PR)

SI: Pressure

pascal (Pa)
pound per square inch (psi)
bar (bar)
atmosphere (atm)
kilopascal (kPa)
millimeters of mercury (mmHg)
megapascal (MPa)
kilopound per square inch (ksi)

Stress (ST)

SI: Stress

pascal (Pa)
Pound per square inch (psi)
Megapascal (Pa)

Energy (EN)

SI: Energy

joule (J)

Work (WO)

SI: Work

joule (J)

Heat (HE)

SI: Heat

watt (W)
kilowatt (kW)
btu/hour (btu/hr)
btu/minute (btu/min)
calorie/hour (cal/hr)
calorie/minute (cal/min)
horsepower, international (hp, international)
horsepower, electric (hp, electric)
horsepower, metric (hp, metric)
horsepower ,water (hp,water)

Power (PO)

SI: Power

watt (W)
kilowatt (kW)
btu/hour (btu/hr)
btu/minute (btu/min)
calorie/hour (cal/hr)
calorie/minute (cal/min)
horsepower, international (hp, international)
horsepower, electric (hp, electric)
horsepower, metric (hp, metric)
horsepower ,water (hp, water)

Radiant Power (RF)

SI: RadiantPower

watt (W)

Electric Charge (QE)

SI: ElectricCharge

coulomb (C)

Voltage (VO)

SI: Voltage

volt (V)

Electric capacitance (ELC)

SI: Capacitance

farad (F)

Electric resistance (ER)

SI: Resistance

ohm (Ω)

Electrical conductance (ECO)

SI: Conductance

siemens (S)

Magnetic flux (MF)

SI: MagneticFlux

weber (Wb)

Magnetic flux density (MFD)

SI: MagneticFluxDensity

tesla (T)

Inductance (IN)

SI: Inductance

henry (H)

Temperature (TE)

SI: Temperature_degC

degree Celsius (°C)
kelvin (°K)
Fahrenheit (°F)

Luminous flux (LF)

SI: LuminousFlux

lumen (lm)

Illuminance (IL)

SI: Illuminance

lux (lx)

Activity (RD)

SI: Activity

becquerel (Bq)

Absorbed dose (ADIR)

SI: AbsorbedDose

gray (Gy)

Equivalent dose (EDIR)

SI: DoseEquivalent

sievert (Sv)

Catalytic activity (CA)

SI:

katal (kat)

Area (AR)

SI: Area

Square meter (m²)
Square Inch (in²)
Square feet (ft²)
Square millimeter (mm²)
Square centimeter (cm²)
Square yard (yds²)
Square kilometer (km²)

Volume (VU)

SI: Volume

cubic meter (m3)
Cubic Inch (in3)
Cubic feet (ft3)
Cubic millimeter (mm3)
Cubic centimeter (cm3)
Cubic yard (yds3)
Gallon(US) (Gal(US))

Speed (SP)

SI: Velocity

metre per second (m/s)
metre per minute (m/min)
metre per hour (m/hr)
foot per second (ft/s)
foot per minute (ft/min)
foot per hour (ft/hr)
kilometre per hour (km/hr)
mile per hour (mi/hr)

Volumetric flow (VF)

SI: VolumeFlowRate

cubic metre per second (m3/s)
Cubic foot per minute (CFM)
cubic meter per hour (m3/hr)
Liter per second (L/s)
Gallon(US) per minute (Gal(US)/min)
Gallon(US) per hour (Gal(US)/hr)

Acceleration (ACC)

SI: Acceleration

metre per second squared (m/s²)
newtons per kilogram (N/kg)
centimeter per second squared (cm/s²)
galileo (Gal)
kilometer per second squared (km/s²)
foot per second squared (ft/s²)
inch per second squared (in/s²)
mile per second squared (mi/s²)
millimeter per second squared (mm/s²)

Angular velocity (AV)

SI: AngularVelocity

radian per second (rad/s)
degree per second (deg/s)
revolution per second (rev/s)

Angular acceleration (AAC)

SI: AngularAcceleration

radian per second squared (rad/s2)

Momentum impulse (MI)

SI: Impulse

newton second (N.s)

Angular momentum (AM)

SI: AngularMomentum

newton metre second (N.m.s)

Torque, moment of force (TO)

SI: Torque

newton metre (N.m)
newton centimeter (N.cm)
newton millimeter (N.mm)
kilonewton meter (kN.m)
kilogram-force meter (kgf.m)
gram-force meter (gf.m)
ounce-force foot (ozf.ft)
ounce-force inch (ozf.in)
pound-force foot (lbf.ft)
pound-force inch (lbf.in)
kilopound inch (kips.in)

Wavenumber (WN)

SI: WaveNumber

reciprocal metre (m−1)

Area density (AD)

SI: SurfaceDensity

kilogram per square metre (kg/m2)

Mass density (MD)

SI: Density

kilogram per cubic metre (kg/m3)
gram per cubic centimeter (gram/cm3)
kilogram per cubic centimeter (kg/cm3)
gram per cubic meter (g/m^3)
gram per cubic millimeter (g/mm^3)
milligram per cubic meter (mg/m3)
milligram per cubic centimeter (mg/cm3)
milligram per cubic millimeter (mg/mm3)
tonne per cubic millimeter (tonne/mm^3)
kilogram per liter (kg/L)
hectogram per liter (hg/L)
dekagram per liter (dag/L)
gram per liter (g/L)
decigram per liter (dg/L)
centigram per liter (cg/L)
milligram per liter (mg/L)
microgram per liter (µg/L)
pound per cubic inch (lb/in^3)
pound per cubic foot (lb/ft^3)
pound per cubic yard (lb/yd^3)
pound per gallon (US) (pound/gallon (US))
pound per gallon (UK) (pound/gallon (UK))
ounce per cubic inch (oz/in^3)
ounce per cubic foot (oz/ft^3)
ounce per gallon (US) (oz/gal (US))
ounce per gallon (UK) (oz/gal (UK))
grain per gallon (US) (grain/gal (US))
grain per gallon (UK) (grain/gal (UK))
grain per cubic foot (grain/ft^3)
ton (short) per cubic yard (ton (short)/yard^3)
ton (long) per cubic yard (ton (long)/yard^3)
slug per cubic foot (slug/ft^3)
psi per 1000 feet (psi/1000 ft)
kilo pound-force square second per quadratic inches (kip.s²/in⁴)

Specific volume (SV)

SI: SpecificVolume

cubic metre per kilogram (m3/kg)

Molarity (MOL)

SI: MolarDensity

mole per cubic metre (mol/m3)

Molar volume (MOV)

SI: MolarVolume

cubic metre per mole (m3/mol)

Action (ACT)

SI:

joule second (J.s)

Heat capacity (HC)

SI: HeatCapacity

joule per kelvin (J/K)

Molar heat capacity, molar entropy (MHC)

SI: MolarHeatCapacity

joule per kelvin mole (J/(mol.K))

Specific heat capacity, specific entropy (SHC)

SI: SpecificHeatCapacity

joule per kilogram kelvin (J/(K.kg))
kilojoule per kilogram kelvin (KJ/(K.kg))

Molar energy (MEN)

SI: MolarEnergy

joule per mole (J/mol)

Specific energy (SEN)

SI: SpecificEnergy

joule per kilogramme (J/kg)

Energy density (END)

SI: EnergyDensity

joule per cubic metre (J/m3)

Surface tension, stiffness (STE)

SI: SurfaceTension

newton per metre (N/m)

Heat flux density, irradiance (HFD)

SI: HeatFlux

watt per square metre (W/m2)
watt per square inch (W/sq.in)
watt per square centimeter (W/sq.cm)

Thermal conductivity (TCO)

SI: ThermalConductivity

watt per metre kelvin (W/(m.K))

Kinematic viscosity (KV)

SI: KinematicViscosity

square metre per second (m2/s)
Centistokes (cSt)

Thermal diffusivity (TD)

SI: ThermalDiffusivity

square metre per second (m2/s)

Diffusion coefficient (DC)

SI: DiffusionCoefficient

square metre per second (m2/s)

Dynamic viscosity (DV)

SI: DynamicViscosity

pascal second (Pa.s)

Electric displacement, field polarization density (EDI)

SI: SurfaceDensityOfCharge

coulomb per square metre (C/m2)

Electric charge density (ECHD)

SI: VolumeDensityOfCharge

coulomb per cubic metre (C/m3)

Electric current density (ECUD)

SI: CurrentDensity

ampere per square metre (A/m2)

Electrical conductivity (ELCO)

SI: Conductivity

siemens per metre (S/m)

Molar conductivity (MOCO)

SI: MolarConductivity

siemens square metre per mole (S.m2/mol)

Permittivity (PER)

SI: Permittivity

farad per metre (F/m)

Magnetic permeability (MAP)

SI:

henry per metre (H/m)

Electric field strength (EFS)

SI: ElectricFieldStrength

volt per metre (V/m)

Magnetization magnetic field strength (MMFS)

SI: MagneticFieldStrength

ampere per metre (A/m)

Luminance (LU)

SI: Luminance

candela per square metre (cd/m2)

Luminous energy (LUEN)

SI: QuantityOfLight

lumen second (lm.s)

Luminous exposure (LUEX)

SI: LightExposure

lux second (lx.s)

Exposure (EXP)

SI: Exposure

coulomb per kilogram (C/kg)

Absorbed dose rate (ADR)

SI: AbsorbedDoseRate

gray per second (Gy/s)

Electrical resistivity (ELRE)

SI: Resistivity

ohm metre (Ω.m)

Linear mass density (LMD)

SI: LinearDensity

kilogram per metre (kg/m)
Pound per foot (lb/ft)

Linear charge density (LICD)

SI:

coulomb per metre (C/m)

Molality (MOLL)

SI: Molality

mole per kilogram (mol/kg)

Molar mass (MOM)

SI: MolarMass

kilogram per mole (kg/mol)
gram per mole (g/mol)

Fuel efficiency (FUE)

SI:

metre per cubic metre (m/m3)

Mass flow rate (MFR)

SI: MassFlowRate

kilogram per second (kg/s)

Magnetic dipole moment (MADM)

SI:

joule per tesla (J/T)

Spectral irradiance power density (SIPD)

SI:

watt per cubic metre (W/m3)

Thermal resistance (THR)

SI: ThermalResistance

kelvin per watt (K/W)

Thermal expansion coefficient (THEC)

SI: LinearExpansionCoefficient

reciprocal kelvin (K−1)
reciprocal celsius (C−1)
micro metre per metre degreel celsius (μm/m/°C)
reciprocal fahrenheit (F−1)

Temperature gradient (TEG)

SI:

kelvin per metre (K/m)

Electron mobility (ELM)

SI: Mobility

square metre per volt second (m2/(V.s))

Energy flux density (ENFD)

SI:

joule per square metre second (J/(m2.s))

compressibility (COMP)

SI: Compressibility

reciprocal pascal (Pa−1)

magnetic reluctance (MARE)

SI: Reluctance

reciprocal henry (H−1)

Magnetic vector potential (MAVP)

SI: MagneticVectorPotential

weber per metre (Wb/m)

Magnetic moment (MAMO)

SI: MagneticMoment

weber metre (Wb.m)

Magnetic rigidity (MARI)

SI:

tesla metre (T.m)

Radiant exposure (RAEX)

SI: EnergyFluence

joule per square metre (J/m2)

Catalytic efficiency (CAEF)

SI:

cubic metre per mole second (m3/(mol.s))

Mass Moment of inertia (MOIN)

SI: MomentOfInertia

kilogram square metre (kg.m²)
kilogram square centimetre (kg.cm²)
kilogram square milimetre (kg.mm²)
gram square centimeter (g.cm²)
gram square millimeter (g.mm²)
kilogram-force meter square second (kgf.m².s)
kilogram-force centimeter square second (kgf.cm².s)
ounce square inch (oz.in²)
ounce-force inch sq. second (ozf.in².s)
pound square foot (lbm.ft²)
pound-force foot sq. second (lbf.ft².s)
pound square inch (lbm.in²)
pound-force inch sq. second (lbf.in².s)
slug square foot (slug.ft²)
ton square millimeter (ton.mm²)
kilopound square inch (klbm.in²)

specific angular momentum (SPAM)

SI:

newton metre second per kilogram (N.m.s/kg)

frequency drift (FRDR)

SI:

hertz per second (Hz/s)

Luminous efficacy (LUEF)

SI: LuminousEfficacy

lumen per watt (lm/W)

Magnetomotive force (MAFO)

SI:

ampere radian (A.rad)

Magnetic susceptibility (MASU)

SI:

metre per henry (m/H)

Radiant intensity (RAIN)

SI: RadiantIntensity

watt per steradian (W/sr)

Spectral intensity (SPIN)

SI:

watt per steradian metre (W/(sr.m))

Radiance (RADI)

SI: Radiance

watt per steradian square metre (W/(sr.m2))

Spectral radiance (SPRA)

SI:

watt per steradian cubic metre (W/(sr.m3))

Spectral power (SPPO)

SI:

watt per metre (W/m)
watt per metre (W/m)
watt per metre (W/m)

Slope (SLOP)

SI:

metre per metre (m/m)
inch per foot (in/ft)

Thermal Insulance (THPO)

SI: ThermalInsulance

kelvin square meters per watt (m2.K/W)
Degree Fahrenheit square feet hours per Btu (ft²°F·h/Btu)

Head loss (HELO)

SI:

meter water column (m(H2O))
Inch water column (in(H2O))
Feet water column (ft(H2O))
Centimeters water column (cm(H2O))
Inches of mercury (in(H2O))
Centimeters of mercury (cm(H2O))

Air Leakage Rate (ALR)

SI:

cubic metre per second per cubic metre (m3/(s.m2))
Cubic foot per minute per square feet (CFM/sq.ft)
Liter per second per cubic metre (L/(s.m2))

Linear Coefficient of Thermal Expansion (LCTE)

SI:

per celsius degree (1/°C)
per kelvin degree (1/°K)
per fahrenheit degree (1/°F)
micron per meter per celsius degree (μm/m/°C)

Absolute Roughness (ABRF)

SI:

meter (m)
Inch (in)
millimeters (mm)
milifeet (milift)

Thickness (THK)

SI: Thickness

meter (m)
Centimeters (cm)
Millimeters (mm)
Inch (in)

Planar moment of inertia (PMOIN)

SI:

Meter to the fourth power (m⁴)
Centimeter to the fourth power (cm⁴)
Millimeter to the fourth power (mm⁴)
Inch to the fourth power (in⁴)

Force per unit length (FPUL)

SI:

newtons per metre ( N/m)
newtons per millimetre ( N/mm)
kilonewtons per millimetre ( kN/mm)
pound-force per inch ( lbf/in)
kilopound-force per inch ( kip/in)