| unit prefix used to form a multiple of a unit obtained by multiplying this unit by a power of two
NOTE – SI prefixes refer strictly to powers of 10 and should not be used for power of 2. For example, 1 kilobit should not be used to represent 1 024 bits ((210 bits) bits), which is 1 kibibit.
Prefixes for binary multiples are:
|
Factor
|
Value
|
Prefix
|
|
Name
|
Symbol
|
|
(210)1
|
1 024
|
kibi
|
Ki
|
|
(210)2
|
1 048 576
|
mebi
|
Mi
|
|
(210)3
|
1 073 741 824
|
gibi
|
Gi
|
|
(210)4
|
1 099 511 627 776
|
tebi
|
Ti
|
|
(210)5
|
1 125 899 906 842 624
|
pebi
|
Pi
|
|
(210)6
|
1 152 921 504 606 846 976
|
exbi
|
Ei
|
|
(210)7
|
1 180 591 620 717 411 303 424
|
zebi
|
Zi
|
|
(210)8
|
1 208 925 819 614 629 174 706 176
|
yobi
|
Yi
|
|