11. Prefix and the kanji numerals representation of unit
Various units are used to represent physical quantity and chemical quantity in the industrial field. There are twenty prefixes officially specified by SI.
|
Prefix | Symbol | U.S. and modern British name | Decimal number representation |
|---|---|---|---|---|
|
Yottayotta |
Y |
Septillion |
1 000 000 000 000 000 000 000 000 |
|
Zettazetta |
Z |
Sextillion |
1 000 000 000 000 000 000 000 |
|
Eexa |
E |
Quintillion |
1 000 000 000 000 000 000 |
|
Petapeta |
P |
Quadrillion |
1 000 000 000 000 000 |
|
Teratera |
T |
Trillion |
1 000 000 000 000 |
|
Gigagiga |
G |
Billion |
1 000 000 000 |
|
Megamega |
M |
Million |
1 000 000 |
|
Kilokilo |
k |
Thousand |
1 000 |
|
Hectohecto |
h |
Hundred |
100 |
|
Decadeca |
da |
Ten |
10 |
|
Nil |
Nil |
One |
1 |
|
Decideci |
d |
Tenth |
0.1 |
|
Centimetercenti |
c |
Hundredth |
0.01 |
|
Milli milli |
m |
Thousandth |
0.001 |
|
Micromicro |
μ |
Millionth |
0.000 001 |
|
Nanonano |
n |
Billionth |
0.000 000 001 |
|
Picopico |
p |
Trillionth |
0.000 000 000 001 |
|
Femtofemto |
f |
Quadrillionth |
0.000 000 000 000 001 |
|
Attoatto |
a |
Quintillionth |
0.000 000 000 000 000 001 |
|
Zeptozepto |
z |
Sextillionth |
0.000 000 000 000 000 000 001 |
|
Yoctoyocto |
y |
Septillionth |
0.000 000 000 000 000 000 000 001 |