SI - Prefixes

The International System of Units (SI): Prefixes

Decimal multiples and submultiples of SI units

 

Decimal multiples and submultiples of SI units can be written using the SI prefixes listed below:

 

Name Symbol Multiplying factor

yotta

Y

1024

zetta

Z

1021

exa

E

1018

peta

P

1015

tera

T

1012

giga

G

109

mega

M

106

kilo

k

103

hecto

h

102

deca

da

101

deci

d

10–1

centi

c

10–2

milli

m

10–3

micro

µ

10–6

nano

n

10–9

pico

p

10–12

atto

a

10–18

zepto

z

10–21

yocto

y

10–24

 

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