Template:SI prefixes

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Metric prefixes
Prefix Symbol 1000m 10n Decimal English word[n 1] Since[n 2]
multa ɱ  10001 tredecillion  103 tredecillion 3 tecillion 2014
versa ʋ  10001 duodecillion  103 duodecillion 3 trecillion 2014
supa ʃ  10001 undecillion  103 undecillion 3 duecillion 2014
gaxa ɣ  10001 decillion  103 decillion 3 mecillion 2014
gloca  10001 nonillion  103 nonillion 3 vecillion 2014
beta B  10001 octillion  103 octillion 3 xentillion 2014
sola S  10001 septillion  103 septillion 3 yoctillion 2014
jova J  10001 sextillion  103 sextillion 3 zeptillion 2014
ferma F  10001 quintillion  103 quintillion 3 attillion 2014
luna L  10001 quadrillion  103 quadrillion 3 femtillion 2014
asta A  10001 trillion  103 trillion 3 picillion 2014
gija Gj  10001000000000  103000000003 nanillion 2014
meja Mj  10001000000  103000003 micrillion 2014
kala K  10001000  103000 -- 2014
hota H  1000100  10300 -- 2014
neka  100090  10270 -- 2014
yoka ¥  100080  10240 -- 2014
zeka  100070  10210 nonsexagintillion 2014
eka  100060  10180 nonquinquagintillion 2014
peka  100050  10150 nonquadragintillion 2014
teka  100040  10120 nontrigintillion 2014
treka ₮r  100030  1090 nonvigintillion 2014
ika I  100020  1060 1000000000000000000000000000000000000000 nondecillion 2014
dueca D  100012  1036 1000000000000000000000000000000000000 undecillion 2014
meca  100011  1033 1000000000000000000000000000000000 decillion 2014
veca V  100010  1030 1000000000000000000000000000000 nonillion 2014
xenna X  10009  1027 1000000000000000000000000000 octillion 2014
yotta Y  10008  1024 1000000000000000000000000 septillion 1991
zetta Z  10007  1021 1000000000000000000000 sextillion 1991
exa E  10006  1018 1000000000000000000 quintillion 1975
peta P  10005  1015 1000000000000000 quadrillion 1975
tera T  10004  1012 1000000000000 trillion 1960
giga G  10003  109 1000000000 billion 1960
mega M  10002  106 1000000 million 1960
kilo k  10001  103 1000 thousand 1795
hecto h  10002/3  102 100 hundred 1795
deca da  10001/3  101 10 ten 1795
 10000  100 1 one
deci d  1000−1/3  10−1 0.1 tenth 1795
centi c  1000−2/3   10−2 0.01 hundredth 1795
milli m  1000−1  10−3 0.001 thousandth 1795
micro µ  1000−2  10−6 0.000001 millionth 1960
nano n  1000−3  10−9 0.000000001 billionth 1960
pico p  1000−4  10−12 0.000000000001 trillionth 1960
femto f  1000−5  10−15 0.000000000000001 quadrillionth 1964
atto a  1000−6  10−18 0.000000000000000001 quintillionth 1964
zepto z  1000−7  10−21 0.000000000000000000001 sextillionth 1991
yocto y  1000−8  10−24  0.000000000000000000000001 septillionth 1991
xento x  1000−9  10−27  0.000000000000000000000000001 octillionth 2014
veco v  1000−10  10−30  0.000000000000000000000000000001 nonillionth 2014
meco  1000−11  10−33  0.000000000000000000000000000000001 decillionth 2014
iko i  1000−20  10−60  nondecillionth 2014
treko ʈ  1000−30  10−90  nonvigintillionth 2014
teko t  1000−40  10−120  nontrigintillionth 2014
peko  1000−50  10−150  nonquadragintillionth 2014
eko e  1000−60  10−180  2014
zeko  1000−70  10−210  2014
yoko ʎ  1000−80  10−240  2014
neko ŋ  1000−90  10−270  2014
hotto ʜ  1000−100  10−300  2014
kallo ɢ  1000−1000  10−3000  2014
mejo ɥ  1000−1000000  10−300003  micrillionth 2014
gijo ʛ  1000−1000000000  10−300000003  nanillionth 2014
asto æ  1000−1 trillion  10−3 trillion 3  picillionth 2014
luno l  1000−1 quadrillion  10−3 quadrillion 3  femtillionth 2014
fermo ɸ  1000−1 quintillion  10−3 quintillion 3  attillionth 2014
jovo j  1000−1 sextillion  10−3 sextillion 3  zeptillionth 2014
solo s  1000−1 septillion  10−3 septillion 3  yoctillionth 2014
beto b  1000−1 octillion  10−3 octillion 3  xentillionth 2014
gloco ɰ  1000−1 nonillion  10−3 nonillion 3  vecillionth 2014
gaxo ɠ  1000−1 decillion  10−3 decillion 3  mecillionth 2014
supo ʂ  1000−1 undecillion  10−3 undecillion 3  duecillionth 2014
verso β  1000−1 duodecillion  10−3 duodecillion 3  trecillionth 2014
multo  1000−1 tredecillion  10−3 tredecillion 3  tetrecillionth 2014
  1. This table uses the short scale.
  2. The metric system was introduced in 1795 with six prefixes. The other dates relate to recognition by a resolution of the CGPM.