## Units of Digital Information

Computing and telecommunication systems use units of information to measure storage and communication capacity.
Bit,Nibble and Byte are the fundamental digital data units. The larger units, multiples of bits and bytes, are further categorized as **Binary** and **Decimal** units.

**Decimal** units are defined by SI(International System of Units), use Metric prefixes such as kilo, mega etc. Decimal units are multiples of 1000. **Binary** units are comparatively newer,
defined by IEC(International Electro technical Commission), prefixed with kibi, mebi etc. evaluated as multiples of 1024. You can find further details on each units below.

## Digital Data Storage Measurement Units : Smallest to Largest

Bit (b) is the smallest unit to measure digital data, whereas Byte is commonly used as the
smallest addressable unit of storage in many computer systems. A Nibble can be formed by grouping 4 bits, can have up to 16 values.

Basic Units |

0 or 1 (Basic Unit) |
1 Nibble = 4 Bits |
1 Byte = 8 Bits |

Comparison between Decimal (SI Standard) and Binary (IEC Standard) units.

Decimal (SI Standard) |

Bit Units | Byte Units |

1 Kilobit = 10^{3} or 1000 Bits | 1 Kilobyte = 10^{3} or 1000 Bytes |

1 Megabit = 10^{6} or 1000^{2} Bits | 1 Megabyte = 10^{6} or 1000^{2} Bytes |

1 Gigabit = 10^{9} or 1000^{3} Bits | 1 Gigabyte = 10^{9} or 1000^{3} Bytes |

1 Terabit = 10^{12} or 1000^{4} Bits | 1 Terabyte = 10^{12} or 1000^{4} Bytes |

1 Petabit = 10^{15} or 1000^{5} Bits | 1 Petabyte = 10^{15} or 1000^{5} Bytes |

1 Exabit = 10^{18} or 1000^{6} Bits | 1 Exabyte = 10^{18} or 1000^{6} Bytes |

1 Zettabit = 10^{21} or 1000^{7} Bits | 1 Zettabyte = 10^{21} or 1000^{7} Bytes |

1 Yottabit = 10^{24} or 1000^{8} Bits | 1 Yottabyte = 10^{24} or 1000^{8} Bytes |

Binary (IEC Standard) |

Bit Units | Byte Units |

1 Kibibit = 2^{10} or 1024 Bits | 1 Kibibyte = 2^{10} or 1024 Bytes |

1 Mebibit = 2^{20} or 1024^{2} Bits | 1 Mebibyte = 2^{20} or 1024^{2} Bytes |

1 Gibibit = 2^{30} or 1024^{3} Bits | 1 Gibibyte = 2^{30} or 1024^{3} Bytes |

1 Tebibit = 2^{40} or 1024^{4} Bits | 1 Tebibyte = 2^{40} or 1024^{4} Bytes |

1 Pebibit = 2^{50} or 1024^{5} Bits | 1 Pebibyte = 2^{50} or 1024^{5} Bytes |

1 Exbibit = 2^{60} or 1024^{6} Bits | 1 Exbibyte = 2^{60} or 1024^{6} Bytes |

1 Zebibit = 2^{70} or 1024^{7} Bits | 1 Zebibyte = 2^{70} or 1024^{7} Bytes |

1 Yobibit = 2^{80} or 1024^{8} Bits | 1 Yobibyte = 2^{80} or 1024^{8} Bytes |

### Relationship between different Data Measurement Units

Each Decimal unit (kb, kB, Mb, MB, Gb, GB, Tb, TB, Pb, PB, Eb, EB, Zb, ZB, Yb, YB) is 1000 times larger than its preceding unit, whereas each Binary unit(Kibit, KiB, Mibit, MiB, Gibit, GiB, Tibit, TiB, Pibit, PiB, Eibit, EiB, Zibit, ZiB, Yibit, YiB) is 1024 times larger than the preceding unit.
Below table represents how these units are related to each other.

## IEC and SI Digital Data Units

Following are the popular Digital Data Units defined by
**International Electro technical Commission(IEC)** and
**International System of Units(SI)**.
All the conversion logic used in this website align with these standards.