Converter of data storage units
Data units converter. Converts bits, bytes, megabytes, gigabytes itd. All known units of data in two different bases: 1000 and 1024. This calculator handles some less known data units: nibbles, octets, pixels (24/48-bit), words, quads, long-words etc.

Inputs data - value and unit, which we're going to convert

Value
Unit
Decimals

1 (bytes) is equal to:

base units

UnitSymbolSymbol
(plain text)
ValueNotes
bitsShow sourcebbb8The smallest information unit. A bit can take one of two states, depending on the context:
  • true and false,
  • 1 and 0,
  • -1 and 1,
  • yes and no,
  • etc.
bytesShow sourceBBB1Equivalent to eight bits. See the bit unit for more information.1 B=8 b1\ B = 8\ b

other units

UnitSymbolSymbol
(plain text)
ValueNotes
nibbleShow source--2Equivalent to four bits. See the bit unit for more information.1 nibble=4 b=12 B1\ nibble = 4\ b = \frac{1}{2}\ B
octetShow source--1Alternative name for byte. See the byte unit for more information.1 octet=1 B=8 b1\ octet = 1\ B = 8\ b
word 16-bitShow source--0.5Equivalent to sixteen bits (16b) or two bytes (2B). See the bit or byte units for more information.16b=2B16b = 2B
24-bit chunks (RGB pixel)Show source--0.333333333Equivalent to twenty-four bits (24b) or three bytes (3B). See the bit or byte units for more information.24b=3B24b = 3B
word 32-bitShow source--0.25Equivalent to thirty-two bits (32b) or four bytes (4B). See the bit or byte units for more information.32b=4B32b = 4B
48-bit chunks (HDRI pixel)Show source--0.166666667Equivalent to fourty-eight bits (48b) or six bytes (6B). See the bit or byte units for more information.48b=6B48b = 6B
word 64-bitShow source--0.125Equivalent to sixty-four bits (64b) or eight bytes (8B). See the bit or byte units for more information.64b=8B64b = 8B
word 128-bitShow source--0.0625Equivalent to one hundred twenty-eight bits (128b) or sixteen bytes (16B). See the bit or byte units for more information.128b=16B128b = 16B
word 256-bitShow source--0.0625Equivalent to two hundred fifty-six bits (256b) or thirty-three bytes (32B). See the bit or byte units for more information.256b=32B256b = 32B
dword (double word)Show source--0.25Equivalent to thirty-two bits (32b). The size of machine word in IA-32 architecture.dword=4B=32bdword = 4B = 32b
qword (quad word)Show source--0.125Equivalent to sixty-four bits (64b). The size of machine word in x64 architecture.qword=8B=64bqword = 8B = 64b
tword (ten bytes)Show source--0.1Equivalent to ten bytes (10B) or eighty bits (80b). The size of x87 coprocessor registers (st0-st7).tword=10B=80btword = 10B = 80b
dqword (double quad word)Show source--0.0625Equivalent to one hundred twenty-eight bits (128b) or sixteen bytes (16B). The size of MMX registers (mm0-mm7).dqword=16B=128bdqword = 16B = 128b

bits base 1024

UnitSymbolSymbol
(plain text)
ValueNotes
kibi-bitsShow sourceKibKibKib0.0078125Equivalent to one thousand twenty four bits (1024 b). See the bit unit for more information.1 Kib=1024 b1\ Kib = 1024\ b
mebi-bitsShow sourceMibMibMib0.000007629Equivalent to one thousand twenty four kibi-bits (1024 Kib). See the bit unit for more information.1 Mib=1024 Kib=1048576 b1\ Mib = 1024\ Kib = 1048576\ b
gibi-bitsShow sourceGibGibGib7.450580597×10-9Equivalent to one thousand twenty four mebi-bits (1024 Mib). See the bit unit for more information.1 Gib=1024 Mib==1048576 Kib==1073741824 b\begin{aligned}1\ Gib &= 1024\ Mib =\\&= 1048576\ Kib =\\&= 1073741824\ b\end{aligned}
tebi-bitsShow sourceTibTibTib7.275957614×10-12Equivalent to one thousand twenty four gibi-bits (1024 Gib). See the bit unit for more information.1 Tib=1024 Gib==1048576 Mib==1073741824 Kib==1099511627776 b\begin{aligned}1\ Tib &= 1024\ Gib =\\&= 1048576\ Mib =\\&= 1073741824\ Kib =\\&= 1099511627776\ b\end{aligned}
pebi-bitsShow sourcePibPibPib7.105427358×10-15Equivalent to one thousand twenty four tebi-bits (1024 Tib). See the bit unit for more information.1 Pib=1024 Tib==1048576 Gib==1073741824 Mib==1099511627776 Kib==1125899906842624 b\begin{aligned}1\ Pib &= 1024\ Tib =\\&= 1048576\ Gib =\\&= 1073741824\ Mib =\\&= 1099511627776\ Kib =\\&= 1125899906842624\ b\end{aligned}

bytes base 1024

UnitSymbolSymbol
(plain text)
ValueNotes
kibi-bytesShow sourceKiBKiBKiB0.000976563Equivalent to one thousand twenty four bytes (1024 B). See the byte unit for more information.1 KiB=1024 B1\ KiB = 1024\ B
mebi-bytesShow sourceMiBMiBMiB9.536743164×10-7Equivalent to one thousand twenty four kibi-bytes (1024 KiB). See the byte unit for more information.1 MiB=1024 KiB=1048576 B1\ MiB = 1024\ KiB = 1048576\ B
gibi-bytesShow sourceGiBGiBGiB9.313225746×10-10Equivalent to one thousand twenty four bytes (1024 MiB). See the byte unit for more information.1 GiB=1024 MiB==1048576 KiB==1073741824 B\begin{aligned}1\ GiB &= 1024\ MiB =\\&= 1048576\ KiB =\\&= 1073741824\ B\end{aligned}
tebi-bytesShow sourceTiBTiBTiB9.094947018×10-13Equivalent to one thousand twenty four bytes (1024 GiB). See the byte unit for more information.1 TiB=1024 GiB==1048576 MiB==1073741824 KiB==1099511627776 B\begin{aligned}1\ TiB &= 1024\ GiB =\\&= 1048576\ MiB =\\&= 1073741824\ KiB =\\&= 1099511627776\ B\end{aligned}
pebi-bytesShow sourcePiBPiBPiB8.881784197×10-16Equivalent to one thousand twenty four bytes (1024 TiB). See the byte unit for more information.1 PiB=1024 TiB==1048576 GiB==1073741824 MiB==1099511627776 KiB==1125899906842624 B\begin{aligned}1\ PiB &= 1024\ TiB =\\&= 1048576\ GiB =\\&= 1073741824\ MiB =\\&= 1099511627776\ KiB =\\&= 1125899906842624\ B\end{aligned}

bits base 1000 (metric)

UnitSymbolSymbol
(plain text)
ValueNotes
kilo-bitsShow sourcekbkbkb0.008Equivalent to one thousand bits (1000 b). See the bit unit for more information.1 kb=1000 b1\ kb = 1000\ b
mega-bitsShow sourceMbMbMb0.000008Equivalent to one million bits (1000000 b). See the bit unit for more information.1 Mb=1 000 000 b=106 b1\ Mb = 1\ 000\ 000\ b = 10^6\ b
giga-bitsShow sourceGbGbGb8×10-9Equivalent to one billion bits (109 b). See the bit unit for more information.1 Gb=1 000 000 000 b=109 b1\ Gb = 1\ 000\ 000\ 000\ b = 10^9\ b
tera-bitsShow sourceTbTbTb8×10-12Equivalent to one trillion bits (1012 b). See the bit unit for more information.1 Tb=1 000 000 000 000 b=1012 b1\ Tb = 1\ 000\ 000\ 000\ 000\ b = 10^{12}\ b
peta-bitsShow sourcePbPbPb8×10-15Equivalent to one quadrillion bits (1015 b). See the bit unit for more information.1 Pb=1 000 000 000 000 000 b=1015 b1\ Pb = 1\ 000\ 000\ 000\ 000\ 000\ b = 10^{15}\ b

bytes base 1000 (metric)

UnitSymbolSymbol
(plain text)
ValueNotes
kilo-bytesShow sourcekBkBkB0.001Equivalent to one thousand bytes (1000 B). See the byte unit for more information.
mega-bytesShow sourceMBMBMB0.000001Equivalent to one million bytes (1000000 B). See the byte unit for more information.1 MB=1 000 000 b=106 B1\ MB = 1\ 000\ 000\ b = 10^6\ B
giga-bytesShow sourceGBGBGB1×10-9Equivalent to one billion bytes (109 B). See the bit unit for more information.1 GB=1 000 000 000 b=109 B1\ GB = 1\ 000\ 000\ 000\ b = 10^9\ B
tera-bytesShow sourceTBTBTB1×10-12Equivalent to one trillion bytes (1012 B). See the bit unit for more information.1 TB=1 000 000 000 000 b=1012 B1\ TB = 1\ 000\ 000\ 000\ 000\ b = 10^{12}\ B
peta-bytesShow sourcePBPBPB1×10-15Equivalent to one quadrillion bytes (1015 B). See the bit unit for more information.1 Pb=1 000 000 000 000 000 b=1015 B1\ Pb = 1\ 000\ 000\ 000\ 000\ 000\ b = 10^{15}\ B

Storage media

UnitSymbolSymbol
(plain text)
ValueNotes
Floppy disk 1.20MBShow sourceFDD120FDD120FDD1208.138020833×10-7The capacity of high density (HD) 5¼ inch floppy disk.1 51/4 inch HD=1200 kB1\ 5 ^1/_4\ \text{inch HD} = 1200\ kB
Floppy disk 1.44MBShow sourceFDD144FDD144FDD1446.781684028×10-7The capacity of high density (HD) 3½ inch floppy disk.1 31/2 inch HD=1440 kB1\ 3 ^1/_2\ \text{inch HD} = 1440\ kB
CD 650MBShow sourceCD650CD650CD6501.467191256×10-9The capacity of 650 MB compact disc.1 CD (650)=650 MiB1\ \text{CD (650)} = 650\ MiB
CD 700MBShow sourceCD700CD700CD7001.362391881×10-9The capacity of 700 MB compact disc.1 CD (700)=700 MiB1\ \text{CD (700)} = 700\ MiB
CD 800MBShow sourceCD800CD800CD8001.192092896×10-9The capacity of 800 MB compact disc.1 CD (800)=800 MiB1\ \text{CD (800)} = 800\ MiB
CD 870MBShow sourceCD870CD870CD8701.096177375×10-9The capacity of 870 MB compact disc.1 CD (870)=870 MiB1\ \text{CD (870)} = 870\ MiB
DVD (single layer)Show sourceDVD5DVD5DVD52.126307248×10-10The capacity of single layer DVD disc.1 DVD5 disc=4.38 GiB1\ \text{DVD5 disc} = 4.38\ GiB
DVD (double layer)Show sourceDVD7DVD7DVD71.178889335×10-10The capacity of double layer DVD disc.1 DVD5 disc=7.90 GiB1\ \text{DVD5 disc} = 7.90\ GiB
Blu-ray (single layer)Show sourceBD1BD1BD13.725290298×10-11The capacity of single layer Blu-ray disc.1 BD-SL disc=23866 MiB23.3 GiB\begin{aligned}1\ \text{BD-SL disc} &= 23866\ MiB \approx\\&\approx 23.3\ GiB\end{aligned}
Blu-ray (double layer)Show sourceBD2BD2BD21.862645149×10-11The capacity of double layer Blu-ray disc.1 BD-DL disc=47732 MiB46.61 GiB\begin{aligned}1\ \text{BD-DL disc} &= 47732\ MiB \approx\\&\approx 46.61\ GiB\end{aligned}
Blu-ray (BDXL3 100GB)Show sourceBD100BD100BD1009.313225746×10-12The capacity of three layer Blu-ray disc.1 BD-XL3 disc=95466 MiB93.23 GiB\begin{aligned}1\ \text{BD-XL3 disc} &= 95466\ MiB \approx\\&\approx 93.23\ GiB\end{aligned}
Blu-ray (BDXL4 128GB)Show sourceBD128BD128BD1287.275957614×10-12The capacity of four layer Blu-ray disc.1 BD-XL4 disc=122072 MiB119.21 GiB\begin{aligned}1\ \text{BD-XL4 disc} &= 122072\ MiB \approx\\&\approx 119.21\ GiB\end{aligned}

Some facts

  • The most basic and smallest unit of information is one bit.
  • Another common unit is - byte. It's equivalent to 8 bits (octet).
  • However, single byte had different meaning in the past. In the first years of computer era single byte had no clear definition. It was usualy defined as number of bits processed by computer at one time. This definition is obsolete now and has only historical meaning. One byte is always equivalent to 8 bits nowadays.
  • Abbreviation corresponding to one bit is a lowercase b (1b), and capital letter B (1B) for one byte. Using the same character to denote two different units often leads to confusions.
    For example, bandwidth of internet connection is usually given in bits per seconds (and derived units), for example: 10Mb/s or 10Mbps (10 megabits per second). Less oriented users often read it incorrectly as 10 megabytes per second. To avoid that, common pattern is to use "10 Mbit" instead of "10 Mb".

How to convert

  • Enter the number to field "value" - enter the NUMBER only, no other words, symbols or unit names. You can use dot (.) or comma (,) to enter fractions.
    Examples:
    • 1000000
    • 123,23
    • 999.99999
  • Find and select your starting unit in field "unit". Some unit calculators have huge number of different units to select from - it's just how complicated our world is...
  • And... you got the result in the table below. You'll find several results for many different units - we show you all results we know at once. Just find the one you're looking for.

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