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Manual Pages  — ORDERS

NAME

orders – orders of magnitude

CONTENTS

DESCRIPTION

The following table lists common multiples of bytes. "Kilobyte" "Prefix" "Power of 2" "Power of 10"
Name Prefix Power of 2 Power of 10

Kilobyte
kB 2^10 10^3

Megabyte
MB 2^20 10^6

Gigabyte
GB 2^30 10^9

Terabyte
TB 2^40 10^12

Petabyte
PB 2^50 10^15

Exabyte
EB 2^60 10^18

Zettabyte
ZB 2^70 10^21

Yottabyte
YB 2^80 10^24

The following table lists common bit rates as a power of ten. "Megabit per second" "Prefix" "Bit per second" "Byte per second"
Name Prefix Bit per second Byte per second

Bit per second
bit/s 1 0.125

Byte per second
B/s 8 1

Kilobit per second
kbit/s 10^3 125

Kilobyte per second
kB/s 8 * 10^3 1000

Megabit per second
Mbit/s 10^6 125000

Megabyte per second
MB/s 8 * 10^6 1000000

Gigabit per second
Gbit/s 10^9 125000000

Gigabyte per second
GB/s 8 * 10^9 1000000000

Terabit per second
Tbit/s 10^12 125000000000

Terabyte per second
TB/s 8 * 10^12 1000000000000

The following table lists common orders of magnitude as a power of ten. "Septillionth" "Order" "Prefix" "Symbol" "Decimal"
Name Order Prefix Symbol Decimal

Septillionth
10^-24 yocto y 0.000000000000000000000001

Sextillionth
10^-21 zepto z 0.000000000000000000001

Quintillionth
10^-18 atto a 0.000000000000000001

Quadrillionth
10^-15 femto f 0.000000000000001

Trillionth
10^-12 pico p 0.000000000001

Billionth
10^-9 nano n 0.000000001

Millionth
10^-6 micro mu 0.000001

Thousandth
10^-3 milli m 0.001

Hundredth
10^-2 centi c 0.01

Tenth
10^-1 deci d 0.1

One
10^0 - - 1

Ten
10^1 deca da 10

Hundred
10^2 hecto h 100

Thousand
10^3 kilo k 1000

Million
10^6 mega M 1000000

Billion
10^9 giga G 1000000000

Trillion
10^12 tera T 1000000000000

Quadrillion
10^15 peta P 1000000000000000

Quintillion
10^18 exa E 1000000000000000000

Sextillion
10^21 zetta Z 1000000000000000000000

Septillion
10^24 yotta Y 1000000000000000000000000

SEE ALSO

units(1), number(6)

STANDARDS

There have been various attempts to standardize the set of binary prefixes. Organizations such as International Electrotechnical Commission ( IEC) have proposed new prefixes such as "kibi", "mebi", "gibi", and "yobi", but the adoption has been slow at best.

AUTHORS

This manual page was written by Jukka Ruohonen <Mt jruoho@netbsd.org>.

ORDERS (7) August 6, 2011

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