Memory and storage capacity conventionsMemory and storage capacity conventions
Memory capacities are specified using binary prefixes:
KiB = 2 bytes
MiB = 2 bytes
GiB = 2 bytes
TiB = 2 bytes
Storage capacities are specified using SI prefixes:
KB = 10 bytes
MB = 10 bytes
GB = 10 bytes
TB = 10 bytes
Older, and other, documentation might use SI prefixes for binary values.
Actual available memory capacity and actual formatted storage capacity for devices are less than specified values.
10
20
30
40
3
6
9
12