SI Prefixes

Factor

Name

Symbol

Factor

Name

Symbol

101

deca

da

10–1

deci

d

102

hecto

h

10–2

centi

c

103

kilo

k

10–3

milli

m

106

mega

M

10–6

micro

µ

109

giga

G

10–9

nano

n

1012

tera

T

10–12

pico

p

1015

peta

P

10–15

femto

f

1018

exa

E

10–18

atto

a

1021

zetta

Z

10–21

zepto

z

1024

yotta

Y

10–24

yocto

y