orders(7) - NetBSD Manual Pages

ORDERS(7)           NetBSD 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 pre- fixes. 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. NetBSD 6.1.5 August 6, 2011 NetBSD 6.1.5

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