Units of Measure

Before we continue explaining the rest of the terms, we need to see some common units of measure:

Name	Symbol	Power of 10	Power of 2	Name	Symbol	Power of 10	Power of 2
Kilo	K	1 thousand = $10^{3}$	$2^{10} = 1024$	Milli	m	1 thousandth = $10^{–3} = \frac{1}{10^{3}}$	$2^{-10} = \frac{1}{2^{10}}$
Mega	M	1 million = $10^{6}$	$2^{20}$	Micro	$\mu$	1 millionth = $10^{-6}$	$2^{-20}$
Giga	G	1 billion = $10^{9}$	$2^{30}$	Nano	n	1 billionth = $10^{-9}$	$2^{-30}$
Tera	T	1 trillion = $10^{12}$	$2^{40}$	Pico	p	1 trillionth = $10^{-12}$	$2^{-40}$
Peta	P	1 quadrillion = $10^{15}$	$2^{50}$	Femto	f	1 quadrillionth = $10^{-15}$	$2^{-50}$
Exa	E	1 quintillion = $10^{18}$	$2^{60}$	Atto	a	1 quintillionth = $10^{-18}$	$2^{-60}$
Zetta	Z	1 sextillion = $10^{21}$	$2^{70}$	Zepto	z	1 sextillionth = $10^{-21}$	$2^{-70}$
Yotta	Y	1 septillion = $10^{24}$	$2^{80}$	Yocto	y	1 septillionth = $10^{-24}$	$2^{-80}$