Units of length

Name	Symbol	Multiplying factor
quettameter	Qm	1030
ronnameter	Rm	1027
yottameter	Ym	1024
zettameter	Zm	1021
exameter	Em	1018
petameter	Pm	1015
terameter	Tm	1012
gigameter	Gm	109
megameter	Mm	106
kilometer	km	103
hectometer	hm	102
decameter	dam	101
meter	m	100
decimeter	dm	10−1
centimeter	cm	10−2
millimeter	mm	10−3
micrometer	µm	10−6
nanometer	nm	10−9
picometer	pm	10−12
femtometer	fm	10−15
attometer	am	10−18
zeptometer	zm	10−21
yoctometer	ym	10−24
rontometer	rm	10−27
quectometer	qm	10−30