Conversion Master

A fast and free online unit converter that handles common measurement units, plus 77 additional converters for a variety of units.
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A fast and free online unit converter that handles common measurement units, plus 77 additional converters for a variety of units.
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A fast and free online unit converter that handles common measurement units, plus 77 additional converters for a variety of units.
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Data Storage Converter

Data Storage Converter

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Data Storage Conversion Units and Formulas

Data Storage Conversion Units

Binary System (IEC Standard)

  • bit (b)
  • nibble (4 bits)
  • byte (B) = 8 bits
  • character (8 bits)
  • word (16 bits)
  • mapm-word (32 bits)
  • quadruple-word (64 bits)
  • block (4096 bits)

Binary prefixes for these units (IEC standard):

  • kilobit (Kb) = 1024 bits
  • kilobyte (KiB) = 1024 bytes
  • mebibyte (MiB) = 1024 KiB
  • gibibyte (GiB) = 1024 MiB
  • tebibyte (TiB) = 1024 GiB
  • pebibyte (PiB) = 1024 TiB
  • exbibyte (EiB) = 1024 PiB
  • zebibyte (ZiB) = 1024 EiB
  • yobibyte (YiB) = 1024 ZiB

Decimal System (SI Standard)

  • kilobit (kb) = 1000 bits
  • kilobyte (kB) = 1000 bytes
  • megabit (Mb) = 1000 kb = 1,000,000 bits
  • megabyte (MB) = 1000 kB = 1,000,000 bytes
  • gigabit (Gb) = 1000 Mb = 1,000,000,000 bits
  • gigabyte (GB) = 1000 MB = 1,000,000,000 bytes
  • terabit (Tb) = 1000 Gb = 1,000,000,000,000 bits
  • terabyte (TB) = 1000 GB = 1,000,000,000,000 bytes
  • petabit (Pb) = 1000 Tb = 1,000,000,000,000,000 bits
  • petabyte (PB) = 1000 TB = 1,000,000,000,000,000 bytes
  • exabit (Eb) = 1000 Pb = 1,000,000,000,000,000,000 bits
  • exabyte (EB) = 1000 PB = 1,000,000,000,000,000,000 bytes
  • zettabit (Zb) = 1000 Eb = 1,000,000,000,000,000,000,000 bits
  • zettabyte (ZB) = 1000 EB = 1,000,000,000,000,000,000,000 bytes
  • yottabit (Yb) = 1000 Zb = 1,000,000,000,000,000,000,000,000 bits
  • yottabyte (YB) = 1000 ZB = 1,000,000,000,000,000,000,000,000 bytes

Specialized File Storage Units

  • floppy-35-dd (3.5″ DD): ~1.44 MB
  • floppy-35-hd (3.5″ HD): ~2.88 MB
  • floppy-35-ed (3.5″ ED): ~4.8 MB
  • floppy-525-dd (5.25″ DD): ~1.44 MB
  • floppy-525-hd (5.25″ HD): ~2.88 MB
  • zip-100: 100 MB
  • zip-250: 250 MB
  • jaz-1gb: 1 GB
  • jaz-2gb: 2 GB
  • cd-74: ~650 MB
  • cd-80: ~700 MB
  • dvd-1-layer-1-side: ~4.7 GB
  • dvd-2-layer-1-side: ~8.5 GB
  • dvd-1-layer-2-side: ~9.4 GB
  • dvd-2-layer-2-side: ~17 GB

Data Storage Conversion Formulas

Binary Units (IEC Standard)

  • 1 bit = 1 bit
  • 1 nibble = 4 bits
  • 1 byte = 8 bits
  • 1 character = 8 bits
  • 1 word = 16 bits
  • 1 mapm-word = 32 bits
  • 1 quadruple-word = 64 bits
  • 1 block = 4096 bits

For binary prefixes:

  • 1 KiB (Kibibyte) = 1024 bytes = 8192 bits
  • 1 MiB (Mebibyte) = 1024 KiB = 1024 × 1024 bytes = 8,388,608 bits
  • 1 GiB (Gibibyte) = 1024 MiB = 1024 × 1024 × 1024 bytes = 8,589,934,592 bits
  • 1 TiB (Tebibyte) = 1024 GiB = 1024 × 1024 × 1024 × 1024 bytes = 8,796,093,022,208 bits
  • 1 PiB (Pebibyte) = 1024 TiB = 1024 × 1024 × 1024 × 1024 × 1024 bytes = 9,007,199,254,741,824 bits
  • 1 EiB (Exbibyte) = 1024 PiB = 1024 × 1024 × 1024 × 1024 × 1024 × 1024 bytes = 9,223,372,036,854,775,808 bits
  • 1 ZiB (Zebibyte) = 1024 EiB = 1024 × 1024 × 1024 × 1024 × 1024 × 1024 × 1024 bytes = 9,444,732,965,739,290,427,648 bits
  • 1 YiB (Yobibyte) = 1024 ZiB = 1024 × 1024 × 1024 × 1024 × 1024 × 1024 × 1024 × 1024 bytes = 9,671,406,556,917,607,732,518,400 bits

Decimal Units (SI Standard)

  • 1 bit = 1 bit
  • 1 byte = 8 bits
  • 1 kb (kilobit) = 1000 bits
  • 1 kB (kilobyte) = 1000 bytes = 8000 bits
  • 1 Mb (megabit) = 1000 kb = 1,000,000 bits
  • 1 MB (megabyte) = 1000 kB = 1,000,000 bytes = 8,000,000 bits
  • 1 Gb (gigabit) = 1000 Mb = 1,000,000,000 bits
  • 1 GB (gigabyte) = 1000 MB = 1,000,000,000 bytes = 8,000,000,000 bits
  • 1 Tb (terabit) = 1000 Gb = 1,000,000,000,000 bits
  • 1 TB (terabyte) = 1000 GB = 1,000,000,000,000 bytes = 8,000,000,000,000 bits
  • 1 Pb (petabit) = 1000 Tb = 1,000,000,000,000,000 bits
  • 1 PB (petabyte) = 1000 TB = 1,000,000,000,000,000 bytes = 8,000,000,000,000,000 bits
  • 1 Eb (exabit) = 1000 Pb = 1,000,000,000,000,000,000 bits
  • 1 EB (exabyte) = 1000 PB = 1,000,000,000,000,000,000 bytes = 8,000,000,000,000,000,000 bits
  • 1 Zb (zettabit) = 1000 Eb = 1,000,000,000,000,000,000,000 bits
  • 1 ZB (zettabyte) = 1000 EB = 1,000,000,000,000,000,000,000 bytes = 8,000,000,000,000,000,000,000 bits
  • 1 Yb (yottabit) = 1000 Zb = 1,000,000,000,000,000,000,000,000 bits
  • 1 YB (yottabyte) = 1000 ZB = 1,000,000,000,000,000,000,000,000 bytes = 8,000,000,000,000,000,000,000,000 bits

Specialized File Storage Units

  • 1 floppy-35-dd = 1.44 MB
  • 1 floppy-35-hd = 2.88 MB
  • 1 floppy-35-ed = 4.8 MB
  • 1 floppy-525-dd = 1.44 MB
  • 1 floppy-525-hd = 2.88 MB
  • 1 zip-100 = 100 MB
  • 1 zip-250 = 250 MB
  • 1 jaz-1gb = 1 GB
  • 1 jaz-2gb = 2 GB
  • 1 cd-74 = 650 MB
  • 1 cd-80 = 700 MB
  • 1 dvd-1-layer-1-side = 4.7 GB
  • 1 dvd-2-layer-1-side = 8.5 GB
  • 1 dvd-1-layer-2-side = 9.4 GB
  • 1 dvd-2-layer-2-side = 17 GB
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