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bit (b):
byte (B):
kilobyte (kB):
megabyte (MB):
gigabyte (GB):
terabyte (TB):

Enter a value and press 'calculate'.
1 byte are 8 bits

In November 2000 we got a new standard.
The calculator still gives the "old" values we had before that time.
Kibibit sounds very funny and strange. Will it become widely accepted?
Here is the new standard:

Name Symbol Before the standardization After the standardization
bit b 1 bit = 1 bit 1 bit = 1 bit
byte B 1 B = 8 bit 1 B = 8 bit
kilobit kbit / kb 1 kbit = 1024 bit 1 kBit = 1000 bit
Kibibit KiBit         1 KiBit = 1024 bit
kilobyte kB 1 kB = 1024 B = Byte 1 kB = 1000 Byte
kibibyte KiB         1 KiB = 1024 Byte
megabit MBit / Mb 1 MBit = 1024 KBit 1 MBit = 1000 kBit
mebibit MiBit / Mib         1 Mib = 1024 KiBit
megabyte MB 1 MB = 1024 kB 1 MB = 1000 kB
Mebibyte MiBit / MiB         1 MiB = 1024 KiB
gigabit GBit / Gb 1 GBit = 1024 MBit 1 GBit = 1000 MBit
gibibit GiBit / Gib         1 Gib = 1024 MiBit
gigabyte GB 1 GB = 1024 MB 1 GB = 1000 MB
gibibyte GiB         1 GiB = 1024 MiB
terabyte TB 1 TB = 1024 GB 1 TB = 1000 GB
tebibyte TiB         1 TiB = 1024 GiB
petabyte PB 1 PB = 1024 TB 1 PB = 1000 TB
pebibyte PiB         1 PiB = 1024 TiB
exabyte EB 1 EB = 1024 PB 1 EB = 1000 PB
exbibyte EiB         1 EiB = 1024 PiB
zettabyte ZB 1 ZB = 1024 EB 1 ZB = 1000 EB
zebibyte ZiB         1 ZiB = 1024 EiB
yottabyte YB 1 YB = 1024 ZB 1 YB = 1000 ZB
yobibyte YiB         1 YiB = 1024 ZiB

Byte = the well-established information measure unity

1 byte = 8 bits and 1 kilobyte (K / Kb) = 210 bytes = 1,024 bytes
1 megabyte (M / MB) = 220 = 1,048,576 bytes and 1 gigabyte (G / GB) = 230 bytes = 1,073,741,824 bytes
1 terabyte (T / TB) = 240 bytes = 1,099,511,627,776 bytes and 1 petabyte (P / PB) = 250 bytes = 1,125,899,906,842,624 bytes
1 exabyte (E / EB) = 260 bytes = 1,152,921,504,606,846,976 bytes

bit = the well-established data transfer unity

1 kilobit = 1000 bits
1 megabit = 1000000 bits

Datas of the hard disk are counted in kilobytes, however the transfer data rates are in kilobits.

Fait: A 56k modem (= 56000 bits) needs for transferring of 56k datas (= 458753 bits)
not 1 second, but at least 8,2 seconds.
This is confusing and you must always bear it in mind, when calculating transfer rates.

Rule of thumb : KByte of the datas / seconds = transfer rate.
 
Connection
Theoretical
rate in KBit
Optimal
rate in KByte
Probable
rate in KByte
14.4 modem 14.4 kbit/s 1.2 KByte/s   1 KByte/s
28.8 modem 28.8 kbit/s 2.4 KByte/s   2 KByte/s
33.6 modem 33.6 kbit/s    3 KByte/s 2.5KByte/s
56 k  modem    53 kbit/s 4.8 KByte/s   4 KByte/s
Single ISDN    64 kbit/s 6 KByte/s   5 KByte/s
Dual ISDN 128 kbit/s 12 KByte/s 10 KByte/s
DSL - light 384 kbit/s 35 KByte/s 30 KByte/s
DSL 1024 kbit/s 125 KByte/s 90 KByte/s
DSL 2048 kbit/s 250 KByte/s 180 KByte/s
DSL 3072 kbit/s    ?  KByte/s   ?   KByte/s
T1 1,54 Mbis/s 150 KByte/s 50 Kbyte/s
Cable modem   6 Mbits/s 300 KByte/s 50 KByte/s
Intranet / LAN 10 Mbits/s 350 KByte/s 35 KByte/s
100 base-T Lan 100 Mbits/s 500 KByte/s 50 KByte/s
 
The new IEC Standard
bit bit 0 or 1
byte B 8 bits
kibibit Kibit 1024 bits
kilobit kbit 1000 bits
kibibyte (binary) KiB 1024 bytes
kilobyte (decimal) kB 1000 bytes
megabit Mbit 1000 kilobits
mebibyte (binary) MiB 1024 kibibytes
megabyte (decimal) MB 1000 kilobytes
gigabit Gbit 1000 megabits
gibibyte (binary) GiB 1024 mebibytes
gigabyte (decimal) GB 1000 megabytes
terabit Tbit 1000 gigabits
tebibyte (binary) TiB 1024 gibibytes
terabyte (decimal) TB 1000 gigabytes
petabit Pbit 1000 terabits
pebibyte (binary) PiB 1024 tebibytes
petabyte (decimal) PB 1000 terabytes
exabit Ebit 1000 petabits
exbibyte (binary) EiB 1024 pebibytes
exabyte (decimal) EB 1000 petabytes
CD: 2 · 44100 · 16 = 1,4112 MBit/s : 8 bit/byte = 176,4 kbyte/s
2 · 44100 · 20 = 1,764 MBit/s : 8 bit/byte = 220,5 kbyte/s
2 · 44100 · 24 = 2,1168 MBit/s : 8 bit/byte = 264,6 kbyte/s
2 · 48000 · 24 = 2,304 MBit/s : 8 bit/byte = 288,0 kbyte/s
 

These words are generally not accepted.
Units from Amendment 2 - International Standard IEC 60027-2

Prefix Symbol Power Factor
Yotta Y 1024 1,000,000,000,000,000,000,000,000
Zetta Z 1021 1,000,000,000,000,000,000,000
Exbi Ei 250 1,152,921,504,606,846,976
Exa E 1018 1,000,000,000,000,000,000
Pebi Pi 250 1,125,899,906,842,624
Peta P 1015 1,000,000,000,000,000
Tebi Ti 240 1,099,511,627,776
Tera T 1012 1,000,000,000,000
Gibi Gi 230 1,073,741,824
Giga G 109 1,000,000,000
Mebi Mi 220 1,048.576
Mega M 106 1,000,000
Kibi Ki 210 1,024
Kilo k 103 1,000
Reference unit   100 1

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