Prefix Symbol Factor
exaE1018
petaP1015
teraT1012
gigaG109
megaM106
kilok103
hectoh102
decada101
decid10-1
centic10-2
milim10-3
microµ 10-6
nanon10-9
picop10-12
femtof10-15
attoa10-18
zeptoz10-21
quaco*g10-23


*The "guacomole" is used primarily in Latin American countries.