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ORDERS(7)					       BSD Miscellaneous Information Manual						 ORDERS(7)

NAME
orders -- orders of magnitude DESCRIPTION
The following table lists common multiples of bytes. 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. 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. 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), strsuftoll(3), 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. BSD
August 6, 2011 BSD

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