xref: /dflybsd-src/share/man/man7/orders.7 (revision 3ddaa23626801100e4a63d75a61863ff57820ed0)
1*3ddaa236SSascha Wildner.\" $NetBSD: orders.7,v 1.6 2011/08/06 11:07:18 jruoho Exp $
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6*3ddaa236SSascha Wildner.\" This code is derived from software contributed to The NetBSD Foundation
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30*3ddaa236SSascha Wildner.Dd August 6, 2011
31*3ddaa236SSascha Wildner.Dt ORDERS 7
32*3ddaa236SSascha Wildner.Os
33*3ddaa236SSascha Wildner.Sh NAME
34*3ddaa236SSascha Wildner.Nm orders
35*3ddaa236SSascha Wildner.Nd orders of magnitude
36*3ddaa236SSascha Wildner.Sh DESCRIPTION
37*3ddaa236SSascha WildnerThe following table lists common multiples of bytes.
38*3ddaa236SSascha Wildner.Bl -column -offset 2n \
39*3ddaa236SSascha Wildner"Kilobyte" "Prefix" "Power of 2" "Power of 10"
40*3ddaa236SSascha Wildner.It Sy Name Ta Sy Prefix Ta Sy Power of 2 Ta Sy Power of 10
41*3ddaa236SSascha Wildner.It Kilobyte Ta kB Ta 2^10 Ta 10^3
42*3ddaa236SSascha Wildner.It Megabyte Ta MB Ta 2^20 Ta 10^6
43*3ddaa236SSascha Wildner.It Gigabyte Ta GB Ta 2^30 Ta 10^9
44*3ddaa236SSascha Wildner.It Terabyte Ta TB Ta 2^40 Ta 10^12
45*3ddaa236SSascha Wildner.It Petabyte Ta PB Ta 2^50 Ta 10^15
46*3ddaa236SSascha Wildner.It Exabyte Ta EB Ta 2^60 Ta 10^18
47*3ddaa236SSascha Wildner.It Zettabyte Ta ZB Ta 2^70 Ta 10^21
48*3ddaa236SSascha Wildner.It Yottabyte Ta YB Ta 2^80 Ta 10^24
49*3ddaa236SSascha Wildner.El
50*3ddaa236SSascha Wildner.Pp
51*3ddaa236SSascha WildnerThe following table lists common bit rates as a power of ten.
52*3ddaa236SSascha Wildner.Bl -column -offset 2n \
53*3ddaa236SSascha Wildner"Megabit per second" "Prefix" "Bit per second" "Byte per second"
54*3ddaa236SSascha Wildner.It Sy Name Ta Sy Prefix Ta Sy Bit per second Ta Sy Byte per second
55*3ddaa236SSascha Wildner.It Bit per second Ta bit/s Ta 1 Ta 0.125
56*3ddaa236SSascha Wildner.It Byte per second Ta B/s Ta 8 Ta 1
57*3ddaa236SSascha Wildner.It Kilobit per second Ta kbit/s Ta 10^3 Ta 125
58*3ddaa236SSascha Wildner.It Kilobyte per second Ta kB/s Ta 8 * 10^3 Ta 1000
59*3ddaa236SSascha Wildner.It Megabit per second Ta Mbit/s Ta 10^6 Ta 125000
60*3ddaa236SSascha Wildner.It Megabyte per second Ta MB/s Ta 8 * 10^6 Ta 1000000
61*3ddaa236SSascha Wildner.It Gigabit per second Ta Gbit/s Ta 10^9 Ta 125000000
62*3ddaa236SSascha Wildner.It Gigabyte per second Ta GB/s Ta 8 * 10^9 Ta 1000000000
63*3ddaa236SSascha Wildner.It Terabit per second Ta Tbit/s Ta 10^12 Ta 125000000000
64*3ddaa236SSascha Wildner.It Terabyte per second Ta TB/s Ta 8 * 10^12 Ta 1000000000000
65*3ddaa236SSascha Wildner.El
66*3ddaa236SSascha Wildner.Pp
67*3ddaa236SSascha WildnerThe following table lists common orders of magnitude as a power of ten.
68*3ddaa236SSascha Wildner.Bl -column -offset 2n \
69*3ddaa236SSascha Wildner"Septillionth" "Order" "Prefix" "Symbol" "Decimal"
70*3ddaa236SSascha Wildner.It Sy Name Ta Sy Order Ta Sy Prefix Ta Sy Symbol Ta Sy Decimal
71*3ddaa236SSascha Wildner.It Septillionth Ta 10^-24 Ta yocto Ta y Ta 0.000000000000000000000001
72*3ddaa236SSascha Wildner.It Sextillionth Ta 10^-21 Ta zepto Ta z Ta 0.000000000000000000001
73*3ddaa236SSascha Wildner.It Quintillionth Ta 10^-18 Ta atto Ta a Ta 0.000000000000000001
74*3ddaa236SSascha Wildner.It Quadrillionth Ta 10^-15 Ta femto Ta f Ta 0.000000000000001
75*3ddaa236SSascha Wildner.It Trillionth Ta 10^-12 Ta pico Ta p Ta 0.000000000001
76*3ddaa236SSascha Wildner.It Billionth Ta 10^-9 Ta nano Ta n Ta 0.000000001
77*3ddaa236SSascha Wildner.It Millionth Ta 10^-6 Ta micro  Ta mu Ta 0.000001
78*3ddaa236SSascha Wildner.It Thousandth Ta 10^-3 Ta milli Ta m Ta 0.001
79*3ddaa236SSascha Wildner.It Hundredth Ta 10^-2 Ta centi Ta c Ta 0.01
80*3ddaa236SSascha Wildner.It Tenth Ta 10^-1 Ta deci Ta d Ta 0.1
81*3ddaa236SSascha Wildner.It One Ta 10^0 Ta - Ta - Ta 1
82*3ddaa236SSascha Wildner.It Ten Ta 10^1 Ta deca Ta da Ta 10
83*3ddaa236SSascha Wildner.It Hundred Ta 10^2 Ta hecto Ta h Ta 100
84*3ddaa236SSascha Wildner.It Thousand Ta 10^3 Ta kilo Ta k Ta 1000
85*3ddaa236SSascha Wildner.It Million Ta 10^6 Ta mega Ta M Ta 1000000
86*3ddaa236SSascha Wildner.It Billion Ta 10^9 Ta giga Ta G Ta 1000000000
87*3ddaa236SSascha Wildner.It Trillion Ta 10^12 Ta tera Ta T Ta 1000000000000
88*3ddaa236SSascha Wildner.It Quadrillion Ta 10^15 Ta peta Ta P Ta 1000000000000000
89*3ddaa236SSascha Wildner.It Quintillion Ta 10^18 Ta exa Ta E Ta 1000000000000000000
90*3ddaa236SSascha Wildner.It Sextillion Ta 10^21 Ta zetta Ta Z Ta 1000000000000000000000
91*3ddaa236SSascha Wildner.It Septillion Ta 10^24 Ta yotta Ta Y Ta 1000000000000000000000000
92*3ddaa236SSascha Wildner.El
93*3ddaa236SSascha Wildner.Sh SEE ALSO
94*3ddaa236SSascha Wildner.Xr units 1 ,
95*3ddaa236SSascha Wildner.Xr strsuftoll 3 ,
96*3ddaa236SSascha Wildner.Xr number 6
97*3ddaa236SSascha Wildner.Sh STANDARDS
98*3ddaa236SSascha WildnerThere have been various attempts to standardize the set of binary prefixes.
99*3ddaa236SSascha WildnerOrganizations such as International Electrotechnical Commission
100*3ddaa236SSascha Wildner.Pq Tn IEC
101*3ddaa236SSascha Wildnerhave proposed new prefixes such as
102*3ddaa236SSascha Wildner.Dq kibi ,
103*3ddaa236SSascha Wildner.Dq mebi ,
104*3ddaa236SSascha Wildner.Dq gibi ,
105*3ddaa236SSascha Wildnerand
106*3ddaa236SSascha Wildner.Dq yobi ,
107*3ddaa236SSascha Wildnerbut the adoption has been slow at best.
108