International System of Units (S.I.) Prefixes

The International System of Units contains a number of prefixes which correspond with the relevant multiplication factors of a given unit. The table below contains these prefixes.

PrefixSymbolFactor
petaP 1015
teraT 1012
gigaG 109
megaM 106
kilok 103
hectoh 102
decada 101
decid 10-1
centic 10-2
millim 10-3
microμ 10-6
nanon 10-9
picop 10-12
femtof 10-15
attoa 10-18

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