Quantity Prefixes

Quantity Prefixes, Relative Values, Symbols, and Scientific Notation

Word

Decimal10n

Name

(Scientific)

Symbol

(Sientific)

Symbol

(Currency)

septillion1 000 000 000 000 000 000 000 0001024yottaYY
sextillion1 000 000 000 000 000 000 0001021zettaZZ
quintillion1 000 000 000 000 000 0001018exaEE
quadrillion1 000 000 000 000 0001015petaPP
trillion1 000 000 000 0001012teraTT
billion1 000 000 000109gigaGB
million1 000 000106megaMM
thousand1 000103kilokk
hundred100102hectoh-
ten10101decada-
one1100-

tenth

0.110-1decid-
hundredth0.0110-2centic-
thousandth0.00110-3millim-
millionth0.000 00110-6microμ-
billionth0.000 000 000 00110-9nanon-
trillionth0.000 000 000 000 00110-12picop-
quadrillionth0.000 000 000 000 000 00110-15femtof-
quintillionth0.000 000 000 000 000 000 00110-18attoa-
sextillionth0.000 000 000 000 000 000 000 00110-21zeptoz-
septillionth0.000 000 000 000 000 000 000 000 00110-24yoctoy-