Supported Units
Basic Set of Units
Name |
Symbol |
In SI Base Units |
Class |
---|---|---|---|
Meter |
m |
1 m |
SI Base Unit |
Kilogram |
kg |
1 kg |
SI Base Unit |
Second |
s |
1 s |
SI Base Unit |
Ampere |
A |
1 A |
SI Base Unit |
Kelvin |
K |
1 K |
SI Base Unit |
Mole |
mol |
1 mol |
SI Base Unit |
Candela |
cd |
1 cd |
SI Base Unit |
Radian |
rad |
1 (represented as m/m)* |
SI Unit |
Steradian |
sr |
1 (represented as m²/m²)* |
SI Unit |
Hertz |
Hz |
1 s-1 |
SI Unit |
Newton |
N |
1 m kg s-2 |
SI Unit |
Pascal |
Pa |
1 m-1 kg s-2 |
SI Unit |
Joule |
J |
1 m² kg s-2 |
SI Unit |
Watt |
W |
1 m² kg s-3 |
SI Unit |
Coulomb |
C |
1 s A |
SI Unit |
Volt |
V |
1 m² kg s-3 A-1 |
SI Unit |
Farad |
F |
1 m-2 kg-1 s4 A2 |
SI Unit |
Ohm |
Ω |
1 m² kg s-3 A-2 |
SI Unit |
Siemens |
S |
1 m-2 kg-1 s3 A2 |
SI Unit |
Weber |
Wb |
1 m2 kg s-2 A-1 |
SI Unit |
Tesla |
T |
1 kg s-2 A-1 |
SI Unit |
Henry |
H |
1 m2 kg s-2 A-2 |
SI Unit |
Degree Celsius |
°C |
1 K + 273.15 |
SI Unit |
Lumen |
lm |
1 cd |
SI Unit |
Lux |
lx |
1 m-2 cd |
SI Unit |
Becquerel |
Bq |
1 s-1 |
SI Unit |
Gray |
Gy |
1 m2 s-2 |
SI Unit |
Sievert |
Sv |
1 m2 s-2 |
SI Unit |
Katal |
kat |
1 s-1 mol |
SI Unit |
Minute |
min |
60 s |
SI accepts |
Hour |
h |
3600 s |
SI accepts |
Day |
d |
86400 s |
SI accepts |
Degree |
° |
π/180 (represented as m/m)* |
SI accepts |
Minute |
´ |
π/10800 (represented as m/m)* |
SI accepts |
Second |
´´ |
π/648000 (represented as m/m)* |
SI accepts |
Hectare |
ha |
104 m2 |
SI accepts |
Liter |
L, l |
10-3 m3 |
SI accepts |
Metric ton |
t |
103 kg |
SI accepts |
Electron volt |
eV |
1.60217653 10-19 m2 kg s-2 |
SI accepts, experimentally defines |
Dalton |
Da |
1.66053886 10-27 kg |
SI accepts, experimentally defines |
Atomic mass unit |
u |
1.66053886 10-27 kg |
SI accepts, experimentally defines |
Astronomical unit |
ua |
1.49597870691 1011 m |
SI accepts, experimentally defines |
Bar |
bar |
105 m-1 kg s-2 |
SI tolerates |
Millimeters of mercury |
mmHg, Torr |
133.322 m-1 kg s-2 |
SI tolerates |
Angstrom |
Å |
10-10 m |
SI tolerates |
Nautical mile |
NM, M |
1852 m |
SI tolerates |
Barn |
b |
10-28 m2 |
SI tolerates |
Knots |
kn |
(1852/3600) m s-1 |
SI tolerates |
Neper |
Np |
1 (represented as W/W) |
SI tolerates |
Bel |
B |
0.434294481903252 (represented as W/W)* |
SI tolerates |
Sone |
sone |
1 (represented as W/W)* |
Informational unit of measure (acoustics) |
Phon |
phon |
1 (represented as W/W)* |
Informational unit of measure (acoustics) |
Bark |
bark |
1 |
Informational unit of measure (acoustics) |
Acum |
acum |
1 |
Informational unit of measure (acoustics) |
Octave |
oct |
1 (represented as s/s)* |
Informational unit of measure (acoustics) |
Decade |
dec |
3.321928094887362 (represented as s/s)* |
Informational unit of measure (acoustics) |
Pi |
π |
3.141592653589793 (represented as m/m)* |
Informational unit of measure (mathematics) |
E |
e |
2.718281828459045 (represented as m/m)* |
Informational unit of measure (mathematics) |
Percent |
% |
10-2 |
Informational unit of measure (mathematics) |
Parts per million |
ppm |
10-6 |
Informational unit of measure (mathematics) |
Bit |
bit |
1 |
Informational unit of measure (information science) |
Octet |
o |
8 |
Informational unit of measure (information science) |
Shannon |
Sh |
0.6931471805599453 |
Informational unit of measure (information science) |
Natural information unit |
nat |
1 |
Informational unit of measure (information science) |
Hartley |
Hart |
2.302585092994045 |
Informational unit of measure (information science) |
Baud |
Bd |
1 s-1 |
Informational unit of measure (information science) |
Erlang |
E |
1 (represented as s/s) |
Informational unit of measure (information science) |
Var |
var |
1 m2 kg s-3 |
German unit, SI tolerant |
Degrees Fahrenheit |
°F |
5/9 K + 255.37 |
US unit, use in SI not recommended |
Degrees Rankine |
°Ra |
5/9 K |
US unit, use in SI not recommended |
* FlexPro differentiates units exclusively using its representation in SI base units. Units with the same SI dimension are viewed as the same kind and can be calculated with each other. However, there are many units that have the same SI-dimension of 1, but still are different types and therefore cannot be calculated together. For these types of units, FlexPro represents the SI dimension of 1 differently, e.g. as m/m or m²/m². Units with the SI dimension of 1 represents differently are viewed as being of different types and can therefore not be calculated with each other or converted into each other.
US Units
Name |
Symbol |
SI Prefix Permitted |
In SI Units |
---|---|---|---|
inch |
in |
No |
25.4 mm |
foot |
ft |
No |
0.3048 m |
yard |
yd |
No |
0.9144 m |
mile |
mi |
No |
1.609344 km |
fathom |
ftm |
No |
1.8288 m |
cable |
cb |
No |
219.456 m |
square survey foot |
sq ft |
No |
0.09290341 m² |
square chain |
sq ch |
No |
404.6873 m² |
acre |
acre |
No |
4046.873 m² |
section |
section |
No |
2.589998 km² |
cubic inch |
cu in |
No |
16.387064 mL |
cubic foot |
cu ft |
No |
28.31685 L |
cubic yard |
cu yd |
No |
0.7645549 m³ |
acre foot |
acre ft |
No |
1233.482 m³ |
US fluid dram |
fl dr |
No |
3.696691 mL |
teaspoon |
tsp |
No |
4.928921 mL |
tablespoon |
Tbsp |
No |
14.78676 mL |
US fluid ounce |
fl oz |
No |
29.57353 mL |
jigger |
jig |
No |
44.36028 mL |
US gill |
gi |
No |
118.2941 mL |
US cup |
cp |
No |
236.5882 mL |
(liquid) US pint |
pt |
No |
473.1765 mL |
(liquid) US quart |
qt |
No |
0.9463529 L |
(liquid) US gallon |
gal |
No |
3.785412 L |
(liquid) barrel |
bbl |
No |
119.2405 L |
grain |
gr |
No |
64.79891 mg |
dram |
dr |
No |
1.771845 g |
ounce |
oz |
No |
28.34952 g |
pound |
lb |
No |
453.59237 g |
US hundredweight |
cwt |
No |
45.359237 kg |
short ton |
ton |
No |
907.18474 kg |
Gaussian Units
Name |
Symbol |
SI Prefix Permitted |
In SI Units |
---|---|---|---|
dyne |
dyn |
Yes |
g cm s-2 |
erg |
erg |
Yes |
g cm2 s-2 |
statwatt |
sW |
Yes |
g cm2 s-3 |
barye |
Ba |
Yes |
g cm-1 s-2 |
galileo |
Gal |
Yes |
cm s-2 |
poise |
P |
Yes |
g cm-1 s-1 |
stokes |
St |
Yes |
cm2 s-1 |
hertz |
Hz |
Yes |
s-1 |
statcoulomb |
sC |
Yes |
g1/2 cm3/2 s-1 |
franklin |
Fr |
Yes |
g1/2 cm3/2 s-1 |
statampere |
sA |
Yes |
g1/2 cm3/2 s-2 |
statvolt |
sV |
Yes |
g1/2 cm1/2 s-1 |
statohm |
sΩ |
Yes |
s cm-1 |
statfarad |
sF |
Yes |
cm |
maxwell |
Mx |
Yes |
g1/2 cm3/2 s-1 |
gauss |
G |
Yes |
g1/2 cm-1/2 s-1 |
oersted |
Oe |
Yes |
g1/2 cm-1/2 s-1 |
gilbert |
Gb |
Yes |
g1/2 cm3/2 s-2 |
unit pole |
pole |
Yes |
g1/2 cm3/2 s-1 |
stathenry |
sH |
Yes |
s2 cm-1 |
phot |
ph |
Yes |
cd sr cm-2 |
stilb |
sb |
Yes |
cd cm-2 |
lambert |
Lb |
Yes |
cd cm-2 |
kayser |
kaiser |
Yes |
cm-1 |
Popular Non-SI Units
Name |
Symbol |
SI Prefix Permitted |
In SI Units |
---|---|---|---|
revolutions per minute |
rpm |
No |
1/min |
revolutions per minute |
RPM |
No |
1/min |
decibel (A) |
dB(A) |
No |
dB |
decibel (B) |
dB(B) |
No |
dB |
decibel (C) |
dB(C) |
No |
dB |
Revolutions |
U |
No |
1 |
degree Celsius |
degC |
No |
°C |
degree Celsius |
DegC |
No |
°C |
second |
sec |
No |
s |
acceleration of free fall |
G * |
No |
9.80665 m/s² |
pond |
p |
Yes |
9.80665 N |
pounds per square inch |
PSI |
No |
6.894757 kPa |
pounds per square inch |
psi |
No |
6.894757 kPa |
* Often g is used instead of G as the symbol for acceleration of gravity. This symbol, however, is the equivalent of the key SI unit gram and is therefore not supported. Please note that G is also used in the Gaussian unit system. If you use both unit collections, the Gaussian units take precedence.