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

Unit	Symbol	Symbol (plain text)	Value	Notes
bits	Show source $b$	b	8	The 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.
bytes	Show source $B$	B	1	Equivalent to eight bits. See the bit unit for more information. $1\ B = 8\ b$

other units

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

bits base 1024

Unit	Symbol	Symbol (plain text)	Value	Notes
kibi-bits	Show source $Kib$	Kib	0.0078125	Equivalent to one thousand twenty four bits (1024 b). See the bit unit for more information. $1\ Kib = 1024\ b$
mebi-bits	Show source $Mib$	Mib	0.000007629	Equivalent to one thousand twenty four kibi-bits (1024 Kib). See the bit unit for more information. $1\ Mib = 1024\ Kib = 1048576\ b$
gibi-bits	Show source $Gib$	Gib	7.450580597×10^-9	Equivalent to one thousand twenty four mebi-bits (1024 Mib). See the bit unit for more information. $\begin{aligned}1\ Gib &= 1024\ Mib =\\&= 1048576\ Kib =\\&= 1073741824\ b\end{aligned}$
tebi-bits	Show source $Tib$	Tib	7.275957614×10^-12	Equivalent to one thousand twenty four gibi-bits (1024 Gib). See the bit unit for more information. $\begin{aligned}1\ Tib &= 1024\ Gib =\\&= 1048576\ Mib =\\&= 1073741824\ Kib =\\&= 1099511627776\ b\end{aligned}$
pebi-bits	Show source $Pib$	Pib	7.105427358×10^-15	Equivalent to one thousand twenty four tebi-bits (1024 Tib). See the bit unit for more information. $\begin{aligned}1\ Pib &= 1024\ Tib =\\&= 1048576\ Gib =\\&= 1073741824\ Mib =\\&= 1099511627776\ Kib =\\&= 1125899906842624\ b\end{aligned}$

bytes base 1024

Unit	Symbol	Symbol (plain text)	Value	Notes
kibi-bytes	Show source $KiB$	KiB	0.000976563	Equivalent to one thousand twenty four bytes (1024 B). See the byte unit for more information. $1\ KiB = 1024\ B$
mebi-bytes	Show source $MiB$	MiB	9.536743164×10^-7	Equivalent to one thousand twenty four kibi-bytes (1024 KiB). See the byte unit for more information. $1\ MiB = 1024\ KiB = 1048576\ B$
gibi-bytes	Show source $GiB$	GiB	9.313225746×10^-10	Equivalent to one thousand twenty four bytes (1024 MiB). See the byte unit for more information. $\begin{aligned}1\ GiB &= 1024\ MiB =\\&= 1048576\ KiB =\\&= 1073741824\ B\end{aligned}$
tebi-bytes	Show source $TiB$	TiB	9.094947018×10^-13	Equivalent to one thousand twenty four bytes (1024 GiB). See the byte unit for more information. $\begin{aligned}1\ TiB &= 1024\ GiB =\\&= 1048576\ MiB =\\&= 1073741824\ KiB =\\&= 1099511627776\ B\end{aligned}$
pebi-bytes	Show source $PiB$	PiB	8.881784197×10^-16	Equivalent to one thousand twenty four bytes (1024 TiB). See the byte unit for more information. $\begin{aligned}1\ PiB &= 1024\ TiB =\\&= 1048576\ GiB =\\&= 1073741824\ MiB =\\&= 1099511627776\ KiB =\\&= 1125899906842624\ B\end{aligned}$

bits base 1000 (metric)

Unit	Symbol	Symbol (plain text)	Value	Notes
kilo-bits	Show source $kb$	kb	0.008	Equivalent to one thousand bits (1000 b). See the bit unit for more information. $1\ kb = 1000\ b$
mega-bits	Show source $Mb$	Mb	0.000008	Equivalent to one million bits (1000000 b). See the bit unit for more information. $1\ Mb = 1\ 000\ 000\ b = 10^6\ b$
giga-bits	Show source $Gb$	Gb	8×10^-9	Equivalent to one billion bits (10⁹ b). See the bit unit for more information. $1\ Gb = 1\ 000\ 000\ 000\ b = 10^9\ b$
tera-bits	Show source $Tb$	Tb	8×10^-12	Equivalent to one trillion bits (10¹² b). See the bit unit for more information. $1\ Tb = 1\ 000\ 000\ 000\ 000\ b = 10^{12}\ b$
peta-bits	Show source $Pb$	Pb	8×10^-15	Equivalent to one quadrillion bits (10¹⁵ b). See the bit unit for more information. $1\ Pb = 1\ 000\ 000\ 000\ 000\ 000\ b = 10^{15}\ b$

bytes base 1000 (metric)

Unit	Symbol	Symbol (plain text)	Value	Notes
kilo-bytes	Show source $kB$	kB	0.001	Equivalent to one thousand bytes (1000 B). See the byte unit for more information.
mega-bytes	Show source $MB$	MB	0.000001	Equivalent to one million bytes (1000000 B). See the byte unit for more information. $1\ MB = 1\ 000\ 000\ b = 10^6\ B$
giga-bytes	Show source $GB$	GB	1×10^-9	Equivalent to one billion bytes (10⁹ B). See the bit unit for more information. $1\ GB = 1\ 000\ 000\ 000\ b = 10^9\ B$
tera-bytes	Show source $TB$	TB	1×10^-12	Equivalent to one trillion bytes (10¹² B). See the bit unit for more information. $1\ TB = 1\ 000\ 000\ 000\ 000\ b = 10^{12}\ B$
peta-bytes	Show source $PB$	PB	1×10^-15	Equivalent to one quadrillion bytes (10¹⁵ B). See the bit unit for more information. $1\ Pb = 1\ 000\ 000\ 000\ 000\ 000\ b = 10^{15}\ B$

Storage media

Unit	Symbol	Symbol (plain text)	Value	Notes
Floppy disk 1.20MB	Show source $FDD120$	FDD120	8.138020833×10^-7	The capacity of high density (HD) 5¼ inch floppy disk. $1\ 5 ^1/_4\ \text{inch HD} = 1200\ kB$
Floppy disk 1.44MB	Show source $FDD144$	FDD144	6.781684028×10^-7	The capacity of high density (HD) 3½ inch floppy disk. $1\ 3 ^1/_2\ \text{inch HD} = 1440\ kB$
CD 650MB	Show source $CD650$	CD650	1.467191256×10^-9	The capacity of 650 MB compact disc. $1\ \text{CD (650)} = 650\ MiB$
CD 700MB	Show source $CD700$	CD700	1.362391881×10^-9	The capacity of 700 MB compact disc. $1\ \text{CD (700)} = 700\ MiB$
CD 800MB	Show source $CD800$	CD800	1.192092896×10^-9	The capacity of 800 MB compact disc. $1\ \text{CD (800)} = 800\ MiB$
CD 870MB	Show source $CD870$	CD870	1.096177375×10^-9	The capacity of 870 MB compact disc. $1\ \text{CD (870)} = 870\ MiB$
DVD (single layer)	Show source $DVD5$	DVD5	2.126307248×10^-10	The capacity of single layer DVD disc. $1\ \text{DVD5 disc} = 4.38\ GiB$
DVD (double layer)	Show source $DVD7$	DVD7	1.178889335×10^-10	The capacity of double layer DVD disc. $1\ \text{DVD5 disc} = 7.90\ GiB$
Blu-ray (single layer)	Show source $BD1$	BD1	3.725290298×10^-11	The capacity of single layer Blu-ray disc. $\begin{aligned}1\ \text{BD-SL disc} &= 23866\ MiB \approx\\&\approx 23.3\ GiB\end{aligned}$
Blu-ray (double layer)	Show source $BD2$	BD2	1.862645149×10^-11	The capacity of double layer Blu-ray disc. $\begin{aligned}1\ \text{BD-DL disc} &= 47732\ MiB \approx\\&\approx 46.61\ GiB\end{aligned}$
Blu-ray (BDXL3 100GB)	Show source $BD100$	BD100	9.313225746×10^-12	The capacity of three layer Blu-ray disc. $\begin{aligned}1\ \text{BD-XL3 disc} &= 95466\ MiB \approx\\&\approx 93.23\ GiB\end{aligned}$
Blu-ray (BDXL4 128GB)	Show source $BD128$	BD128	7.275957614×10^-12	The capacity of four layer Blu-ray disc. $\begin{aligned}1\ \text{BD-XL4 disc} &= 122072\ MiB \approx\\&\approx 119.21\ GiB\end{aligned}$

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.

Tags and links to this website

Tags:

data_store · data_size · bytes · bits · data_storage_units_converter

Tags to Polish version:

ilosc_danych · bajty_bity · konwerter_jednostek_ilosci_danych

What tags this calculator has

CONVERTER · IT/COMPUTERS · A -> Z (all)

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Ancient version of this site - links

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