Binary Powers of 10

.	Bytes	Bits	.	Deviation from 10^x
1 bit = 1 byte = 1 kilobyte = 1 megabyte = 1 gigabyte = 1 terabyte = 1 petabyte = 1 exabyte = 1 zettabyte = 1 yottabyte = 1 ?1byte = 1 ?2byte = 1 ?3byte =	.125 byte. = 1 byte. = 1,024 bytes = 1,048,576 bytes = 1,073,741,824 bytes = 1,099,511,627,776 bytes = 1,125,899,906,842,624 bytes = 1,152,921,504,606,846,976 bytes = 1,180,591,620,717,411,303,424 bytes = 1,208,925,819,614,629,174,706,176 bytes = 1,237,940,039,285,380,274,899,124,224 bytes = 1,267,650,600,228,229,401,496,703,205,376 bytes = 1,298,074,214,633,706,907,132,624,082,305,024 bytes =	1 bit. 8 bits 8,192 bits 8,388,608 bits 8,589,934,592 bits 8,796,093,022,208 bits 9,007,199,254,740,992 bits 9,223,372,036,854,775,808 bits 9,444,732,965,739,290,427,392 bits 9,671,406,556,917,033,397,649,408 bits 9,903,520,314,283,042,199,192,993,792 bits 10,141,204,801,825,835,211,973,625,643,008 bits 10,384,593,717,069,655,257,060,992,658,440,192 bits	. x 3 6 9 12 15 18 21 24 27 30 33	. . 24 48,576 73,741,824 99,511,627,776 125,899,906,842,624 152,921,504,606,846,976 180,591,620,717,411,303,424 208,925,819,614,629,174,706,176 237,940,039,285,380,274,899,124,224 267,650,600,228,229,401,496,703,205,376 298,074,214,633,706,907,132,624,082,305,024

.	Bytes	2^X	Bits
1 bit = 1 byte = 1 kilobyte = 1 megabyte = 1 gigabyte = 1 terabyte = 1 petabyte = 1 exabyte = 1 zettabyte = 1 yottabyte = 1 ?1byte = 1 ?2byte = 1 ?3byte =	.125 byte. = 1 byte. = 1024 bytes = 1048576 bytes = 1073741,824 bytes = 1099511627776 bytes = 1125899906842624 bytes = 1152921504606846976 bytes = 1180591620717411303424 bytes = 1208925819614629174706176 bytes = 1237940039285380274899124224 bytes = 1267650600228229401496703205376 bytes = 1298074214633706907132624082305024 bytes =	2^10 2^20 2^30 2^40 2^50 2^60 2^70 2^80	1 bit. 8 bits 8192 bits 8388608 bits 8589934592 bits 8796093022208 bits 9007199254740992 bits 9223372036854775808 bits 9444732965739290427392 bits 9671406556917033397649408 bits 9903520314283042199192993792 bits 10141204801825835211973625643008 bits 10384593717069655257060992658440192 bits

Some interesting facts about what these various-sized bytes can store:

* 1 bit: a binary decision
* 1 byte: a character
* 5 Megabytes: The complete works of Shakespeare
* 2 Gigabytes: 20 meters of shelved books
* 10 Terabytes: The printed collection of the US Library of Congress
* 200 Petabytes: All printed material
* 5 Exabytes: All words ever spoken by human beings

Etymology of Units by PC Jagdeep

1. Kilo Greek khilioi = 1000
2.Mega Greek megas = great, e.g., Alexandros Megos
3.Giga Latin gigas = giant
4.Tera Greek teras = monster
5.Peta Greek pente = five, fifth prefix, peNta - N = peta
6.Exa Greek hex = six, sixth prefix, Hexa - H = exa Remember, in standard French,
the initial H is silent, so they would pronounce Hexa as Exa.
It is far easier to call it Exa for everyone's sake, right?
7.Zetta almost homonymic with Greek Zeta, but last letter of the Latin alphabet
8.Yotta almost homonymic with Greek iota, but penultimate letter of the Latin alphabet.

The first prefix is number-derived; second, third, and fourth are based on mythology. Fifth and sixth are supposed to be just that: fifth and sixth. But, with the seventh, another fork has been taken. The General Conference of Weights and Measures (CGMP, from the French; they have been headquartered, since 1874, in Sevres on the outskirts of Paris) has now decided to name the prefixes, starting with the seventh, with the letters of the Latin alphabet, but starting from the end. Now, that makes it all clear! Remember, both according to CGMP and SI, the prefixes refer to powers of 10. Mega is 10**6, exactly 1,000,000; kilo is exactly 1000, not 1024.

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Powers of Ten - SI Prefixes

The following tables of prefixes show how to use terms like Gigabytes and Nanoseconds.
The prefix is placed on the front of words to imply a multiple of millions or billions,
or to show a division by (negative powers of ten) a number, as in microsecond.
These prefixes are used with metric measurements. They are also called SI prefixes,
because the metric units are known as the SI Units, where SI means Systeme Internationale.

Powers of 10 - SI Prefixes
prefix	letter	power of 10	multiplier	US English words
Greater than one - a multiple
kilo	K	3	1,000	one thousand
mega	M	6	1,000,000	one million
giga	G	9	1,000,000,000	one billion
tera	T	12	1,000,000,000,000	one trillion
peta	P	15	1,000,000,000,000,000	one quadrillion
exa	E	18	1,000,000,000,000,000,000	one quintillion
zetta	Z	21	1,000,000,000,000,000,000,000	one sextillion
yotta	Y	24	1,000,000,000,000,000,000,000,000	one septillion
Less than one - a fraction
milli	m	-3	1/1,000	one thousandth
micro	µ *	-6	1/1,000,000	one millionth
nano	n	-9	1/1,000,000,000	one billionth
pico	p	-12	1/1,000,000,000,000	one trillionth
femto	f	-15	1/1,000,000,000,000,000	one quadrillionth
atto	a	-18	1/1,000,000,000,000,000,000	one quintillionth
zecto	z	-21	1/1,000,000,000,000,000,000,000	one sextillionth
yocto	y	-24	1/1,000,000,000,000,000,000,000,000	one septillionth
* note: the letter for micro is the Greek letter 'mu'.
Examples: One picosecond is 0.0000000000001 second, or 10^-12 second. (Some say "pie-co", some say "pee-co.") A terawatt is 1,000,000,000,000 watts of energy. 166 Megahertz means 166 million cycles per second.

Table of kⁿ, with k on the left and n at the top.

	1	2	3	4	5	6	7	8	9	10
1	1	1	1	1	1	1	1	1	1	1
2	2	4	8	16	32	64	128	256	512	1,024
3	3	9	27	81	243	729	2,187	6,561	19,683	59,049
4	4	16	64	256	1,024	4,096	16,384	65,536	262,144	1,048,576
5	5	25	125	625	3,125	15,625	78,125	390,625	1,953,125	9,765,625
6	6	36	216	1,296	7,776	46,656	279,936	1,679,616	10,077,696	60,466,176
7	7	49	343	2,401	16,807	117,649	823,543	5,764,801	40,353,607	282,475,249
8	8	64	512	4,096	32,768	262,144	2,097,152	16,777,216	134,217,728	1,073,741,824
9	9	81	729	6,561	59,049	531,441	4,782,969	43,046,721	387,420,489	3,486,784,401
10	10	100	1,000	10,000	100,000	1,000,000	10,000,000	100,000,000	1,000,000,000	10,000,000,000