Decimal System Prefixes

Prefix names used for multiples and submultiples units according to the SI system and DIN 1301.

Decimal System Prefixes

Prefix names used for multiples and submultiples of units according to the SI system (DIN 1301 "Units - Part 1: Unit names, unit symbols").

PrefixName of FactorDecimal EquivalentExponential Expression
y - yoktoseptillionth0.000 000 000 000 000 000 000 001E-24
z - zeptosextillionth0.000 000 000 000 000 000 001E-21
a - attotrillionth0.000 000 000 000 000 001E-18
f - femtothousand billionth0.000 000 000 000 001E-15
p - picobillionth0.000 000 000 001E-12
n - nanothousand billionth0.000 000 001E-9
μ - micromillionth0.000 001E-6
m - millithousandth0.001E-3
c - centihundredth0.01E-2
d - decitenth0.1E-1
Unione1E0
d - dekaten10E1
h - hectoone hundred100E2
k - kiloone thousand1 000E3
M - megaone million1 000 000E6
G - gigaone billion1 000 000 000E9
T - teraone trillion1 000 000 000 000E12
P - peta1 000 000 000 000 000E15
E - exa1 000 000 000 000 000 000E18
Z - zetta1 000 000 000 000 000 000 000E21
Y - yotta1 000 000 000 000 000 000 000 000E24
Decimal System Prefixes | MEPKit Engineering Tools | MEPKit