数量级:

K = Kilo(千)
M = Mega(兆)
G = Giga(吉,千兆)
T = Tera(太)
P = Peta(拍)
E = Exa(艾)
Z = Zetta(泽它,皆)
Y = Yotta(尧)
B = Bronto
N = Nona
D = Dogga

计量单位:

b = Bit(位,比特) 计算机存储最小单位
B = Byte(字节) 它是计算机存储的基本单位. 1字节=8位,1个英文字符是1个字节(1B),1个GBK编码的汉字为2个字节(2B)。
Kb = KiloBit(千位,千比特)
KB = KiloByte(千字节)
Mb = MegaBit(兆位,兆比特)
MB = MegaByte(兆字节)
GB = GigaByte(吉字节,千兆字节)
TB = TeraByte(太字节)
PB = PetaByte(拍字节)
EB = ExaByte(艾字节)
ZB = ZettaByte(泽它字节,皆字节)
YB = YottaByte(尧字节)
BB = BrontoByte
NB = NonaByte
DB = DoggaByte

单位换算:

KB = 2^10 Bytes = 1,024 Bytes
MB = 2^20 Bytes = 1,048,576 Bytes
GB = 2^30 Bytes = 1,073,741,824 Bytes
TB = 2^40 Bytes = 1,099,511,627,776 Bytes
PB = 2^50 Bytes = 1,125,899,906,842,624 Bytes
EB = 2^60 Bytes = 1,152,921,504,606,846,976 Bytes
ZB = 2^70 Bytes = 1,180,591,620,717,411,303,424 Bytes
YB = 2^80 Bytes = 1,208,925,819,614,629,174,706,176 Bytes
BB = 2^90 Bytes = 1,237,940,039,285,380,274,899,124,224 Bytes
NB = 2^100 Bytes = 1,267,650,600,228,229,401,496,703,205,376 Bytes
DB = 2^110 Bytes = 1,298,074,214,633,706,907,132,624,082,305,024 Bytes