Andes accepts units from the International System of Units (SI), plus a few others.  Unit symbols must be entered using upper or lower case letters exactly as shown.
symbol
name
m
meter
kg    
kilogram
s
second
C
coulomb
g
gram (= 0.001 kg)
N
newton
J
joule
V
volt
A
ampere ("amps")
T
tesla
Wb
weber
ohm, Ω
ohm
Hz
hertz
Pa
pascal
F
farad
W
watt
deg
degree (= 0.0174532925199433 rad)
rad
radians
rev
revolutions (= 6.2831853071796 rad)
day
day (= 86400 s)
hr, h
hour (= 3600 s)
min
minute (= 60 s)
yr
year (= 31556952 s)
liter
liter (= 0.001 m^3)
NON SI UNITS ACCEPTED BY ANDES:
lb
pound (= 4.448 N)
ft
foot (= 0.3048 m)
in
inch (= 0.0254 m)
mi
mile (= 1609 m)
slug
slug (=14.59 kg)
gal
gallon (= 0.003786 m^3)

atomic mass unit (= 1.6605402*10-27 kg)
eV
electron volt (= 1.60217733*10-19 J)
cal
calorie (= 4.186 J)
lbs
pounds (= 4.448 N)
knot
knot (= 0.5144444 m/s)
psi
pounds/in^2 (= 6894.4137888276 Pa)
rpm
revs/min (= 0.10471975511966 rad/s)

MATH. OPERATIONS ON UNIT SYMBOLS:
symbol
meaning
example
/
division
m/s
^
exponentiation
s^2
.     (period)
multiplication
N.m
*
multiplication (alternative)
N*m
PREFIXES ON UNIT SYMBOLS:
abbrev
value
name
a
1.00*10-18
atto
f
1.00*10-15 
femto
p
1.00*10-12
pico
n
1.00*10-09
nano
μ, mu
1.00*10-06
micro
m
1.00*10-03
milli
c
1.00*10-02
centi
d
1.00*10-01
deci
k
1.00*10+03
kilo
K
1.00*10+03
kilo
M
1.00*10+06
mega
G
1.00*10+09
giga
T
1.00*10+12
tera
P
1.00*10+15
peta
E
1.00*10+18
exa
UNITS OF SOME PHYSICAL QUANTITIES:
m/s
velocity
m/s^2
acceleration
N.m
torque
J.s
angular momentum
kg.m^2
moment of inertia
N/m
spring constant
N.s/m^2
viscosity
N/m^2
Young/shear/bulk modulus
rad/s^2
angular acceleration
N/C
electric field