Prefixes Table

A table showing an overview of prefixes, symbols, and multiplication factors used in science and math, such as yotta (Y), zetta (Z), exa (E), peta (P), tera (T), giga (G), mega (M), kilo (k), hecto (h), deca (da), deci (d), centi (c), milli (m), micro (µ), nano (n), pico (p), femto (f), atto (a), zepto (z) and yocto (y)

Prefixes

Symbol	Prefix	Multiply by	meaning	Decimal
Y	yotta-	1024	one septillion	1,000,000,000,000,000,000,000,000
Z	zetta-	1021	one sexillion	1,000,000,000,000,000,000,000
E	exa-	1018	one quintillion	1,000,000,000,000,000,000
P	peta-	1015	one quadrillion	1,000,000,000,000,000
T	tera-	1012	one trillion	1,000,000,000,000
G	giga-	109	one billion	1,000,000,000
M	mega-	106	one million	1,000,000
k	kilo-	103	one thousand	1,000
h	hecto-	102	one hundred	100
da	deca-	10	ten	10
d	deci-	10-1	one tenth	1
c	centi-	10-2	one hundredth	0.1
m	milli-	10-3	one thousandth	0.001
µ	micro-	10-6	one millionth	0.000,001
n	nano-	10-9	one billionth	0.000,000,001
p	pico-	10-12	one trillionth	0.000,000,000,001
f	femto-	10-15	one quadrillionth	0.000,000,000,000,001
a	atto-	10-18	one quintillionth	0.000,000,000,000,000,001
z	zepto-	10-21	one sextillionth	0.000,000,000,000,000,000,001
y	yocto-	10-24	one septillionth	0.000,000,000,000,000,000,000,001