Units overview

All built-in units and prefixes are listed on this page. You can use the short names as well as the long names of units. To learn more about units, see the page Units.

The units are sorted in the following groups. On Wikipedia you can find detailed information about each of the units, see the pages on Physical quantity, SI units, and United States customary units.

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Mechanics

Note: The degree character ° can be inserted by pressing <Ctrl+D>.
Angle
Rad
Deg (°)
Grad
Cycle
Time
s (seconds)
h (hours)
min (minutes)
Mass
kg (kilogram)
tonne
ton
gr (grain)
dr (dram)
oz (ounce)
lbm (poundmass)
hundredweight
cwt (stick)
Length
m (meter)
inch
ft (foot)
yd (yard)
mi (mile)
li (link)
rd (rod)
ch (chain)
Angstrom
mil
Area
m2 (Square meter) = 1 m²
sqin (Square inch)
sqft (Square foot)
sqyd (Square yard)
sqmi (Square mile)
sqrd (Square rod)
sqch (Square chain)
sqmil (Square mil)
Volume
m3 (Cubic metre) = m³
L (litre)
cuin (Cubic inch)
cuft (Cubic foot)
cuyd (Cubic yard)
teaspoon
tablespoon
Liquid volume
minim
fldr (fluiddram)
floz (fluidounce)
gi (gill)
cp (cup)
pt (pint)
qt (quart)
gal (gallon)
bbl (beerbarrel)
obl (oilbarrel)
hogshead
Derived quantitiesDefinition
Hz (Hertz)1/s
N (Newton)kgm/s2
lbf (poundforce)lbmm/s2
J (Joule)Nm
P (Pascal)N/m2
Bar1105 Pa
psilbf/inch2
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Electricity

ElectricityDefinition
A (Ampere)
C (Coulomb)sA
W (Watt)J/s
V (Volt)W/A
Ohm (Resistance)V/A
F (Farad)C/V
Wb (Weber)J/A
T (Tesla)Wb/m2
H (Henry)Wb/A
S (Siemens)1/Ohm
Derived quantitiesDefinition
eV (ElectronVolt)1.6021765314e-19 J
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Temperature

The degree character ° can be inserted in the Workarea of SpeQ by pressing <Ctrl+D>.
TemperatureDefinition
K (Kelvin)
°C (Celsius)°C = K - 273.15
°F (Fahrenheit)°F = (K 1.8) - 459.67
°R (Rankine)°R = K 1.8
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Molecular

MolecularDefinition
mol (mole)
kat (Katal)mol/s
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Light intensity

Light intensityDefinition
cd (candela)
sr (steradian)
lm (Luminous flux)cdsr
lux (Illuminance)lm/m2
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Radioactivity

RadioactivityDefinition
Bq (Becquerel)1/s
Gy (Gray)J/kg
Sv (Sievert)J/kg
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Digital computing

Digital computingDefinition
b (bit)
B (byte)8 bit
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Prefixes

Prefixes can be used preceding to units. They are used to reduce the number of zeros in numerical values. For example 0.0000025 m can be written as 2.5 μm, which is easier to read. Note that the character μ can be inserted in the Workarea by pressing <Ctrl+U>.
PrefixValue
d (deci)0.1
c (centi)0.01
m (milli)0.001
μ (micro)10-6
n (nano)10-9
p (pico)10-12
f (femto)10-15
a (atto)10-18
z (zepto)10-21
y (yocto)10-24
PrefixValue
da (deca)10
h (hecto)100
k (kilo)1000
M (mega)106
G (giga)109
T (tera)1012
P (peta)1015
E (exa)1018
Z (zetta)1021
Y (yotta)1024
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Binary prefixes

Binary prefixes can be used with the units bit and byte. These prefixes denote powers of 1024 = 210. You can find more information on binary prefixes on wikipedia, click here.
PrefixValue
Ki (kibi)1024
Mi (mebi)10242
Gi (gibi)10243
Ti (tebi)10244
Pi (pebi)10245
Ei (exbi)10246
Zi (zebi)10247
Yi (yobi)10248
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Examples

For examples see the page Units.
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See Also

Defining units, Functionstree, Units