Units
SI Units | |||
Quantity |
Unit |
Symbol | |
Amount of substance |
mole |
mol | |
Electric current |
ampere |
a | |
Energy |
joule |
J | |
Length |
meter |
m | |
Mass |
kilogram |
kg | |
Power |
watt (1 J/s) |
w | |
Pressure |
pascal |
Pa | |
Radioactive decay |
becqerel |
Bq | |
Temperature |
kelvin |
K | |
Time |
second |
s | |
Prefixes | |||
Name |
Symbol |
Multiplying factor | |
atto |
a |
10-18 | |
femto |
f |
io-15 | |
pico |
P |
io-12 | |
nano |
n |
10-9 | |
micro |
M |
io-Ä | |
milli |
m |
10-3 | |
centi |
c |
10-2 | |
deci |
d |
10-1 | |
deka |
da |
1o | |
hecto |
h |
102 | |
kilo |
k |
103 | |
mega |
M |
10Ä | |
giga |
G |
109 | |
tera |
T |
1012 | |
peta |
P |
1015 | |
exa |
E |
1018 |
Name and symbol Value acre angstrom (A) atmosphere (atm) bar barrel (petroleum) = 42 gal = 306 lb calorie (cal) curie (Ci) electron-volt (eV) gallon (gal) hectare metric ton—see tonne mile (mi) ton (U.S. long); 2240 pounds ton (U.S. short); 2000 pounds tonne (metric ton); 2205 pounds 0.4047 hectare 10-10mor 0.1 nm 1.01325 x 105 Pa 105 Pa 0.159 m3 4.184 J 3.70 x 1010 Bq 1.602 x 10-19J 0.3048 m 3.786 x 10-3 m3 104m2 1609.344 m 1.016 x 103 kg 9.072 x 102 kg 1 x 103 kg |
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