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.

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.

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

value
unit
decimals

1 (bytes) is equal to:

base units

unitsymbolvalue
bits
b
8
bytes
B
1

other units

unitsymbolvalue
nibbles
2
octets
1
words 16-bit
0.5
24-bit chunks (RGB pixel)
0.333333333
words 32-bit
0.25
dwords (double words)
0.25
48-bit chunks (HDRI pixel)
0.166666667
words 64-bit
0.125
words 128-bit
0.0625
words 256-bit
0.0625

bits base 1024

unitsymbolvalue
kibi-bits
kib
0.0078125
mebi-bits
Mib
0.000007629
gibi-bits
Gib
7.450580597×10-9
tebi-bits
Tib
7.275957614×10-12
pebi-bits
Pib
7.105427358×10-15

bytes base 1024

unitsymbolvalue
kibi-bytes
KiB
0.000976563
mebi-bytes
MiB
9.536743164×10-7
gibi-bytes
GiB
9.313225746×10-10
tebi-bytes
TiB
9.094947018×10-13
pebi-bytes
PiB
8.881784197×10-16

bits base 1000 (metric)

unitsymbolvalue
kilo-bits
kb
0.008
mega-bits
Mb
0.000008
giga-bits
Gb
8×10-9
tera-bits
Tb
8×10-12
peta-bits
Pb
8×10-15

bytes base 1000 (metric)

unitsymbolvalue
kilo-bytes
KB
0.001
mega-bytes
MB
0.000001
giga-bytes
GB
1×10-9
tera-bytes
TB
1×10-12
peta-bytes
PB
1×10-15

Storage media

unitsymbolvalue
Floppy disk 1.20MB
FDD120
7.94728597×10-7
Floppy disk 1.44MB
FDD144
6.622738308×10-7
CD 650MB
CD650
1.467191256×10-9
CD 700MB
CD700
1.362391881×10-9
CD 800MB
CD800
1.192092896×10-9
CD 870MB
CD870
1.096177375×10-9
DVD (single layer)
DVD1
2.13117294×10-10
DVD (double layer)
DVD2
1.170003234×10-10
Blu-ray (single layer)
BD1
3.725290298×10-11
Blu-ray (double layer)
BD2
1.862645149×10-11
Blu-ray (BDXL 100GB)
BD100
9.313225746×10-12
Blu-ray (BDXL 128GB)
BD128
7.275957614×10-12

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".

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Ancient version of this site - links

"Calculla v1" version of this calculatorIn December 2016 the Calculla website has been republished using new technologies and all calculators have been rewritten. Old version of the Calculla is still available through this link: v1.calculla.com. We left the version 1 of Calculla untouched for archival purposes.
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