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.

Bit (binary digit) is the most basic unit of information in digital computing and communications systems. Bit is the smallest unit to represent digital data. A bit represents a logical state with one of two possible values either 1 or 0. The unit symbol for bit is **b**

Nibble is an aggregation of **four bits**. It is also called a quadbit or a half-byte. Nibble can have up to 16 possible values, represented by a single hexadecimal digit 0 - F

Byte is a unit of digital information that most commonly consists of eight bits. A single byte can be used to represent 256 different values. 1000bytes = 1 Kilobyte (KB). 1024 bytes = 1 Kibibyte (KiB)

One Kilobit is defined as **10 ^{3}** or

**1000 Bits**. Kilobit is a decimal unit defined as per SI standard. The unit symbol for Kilobit is

**kbit**or

**kb**. Kilobit is not same as Kibibit (Kib) that contains 1024 bits. 1000 Kilobits = 1 Megabit (Mbit)

One Kibibit is defined as **2 ^{10}** or

**1024 Bits**. Kibibit is a binary unit defined as per IEC standard. The unit symbol for Kibibit

**Kibit**. Kibibit is not same as Kilobit (Kb) that contains 1000 bits. 1024 Kibibits = 1 Mebibit (Mibit)

One Kilobyte is defined as **10 ^{3}** or

**1000 Bytes**. Kilobyte is a decimal unit defined as per SI standard. The unit symbol for Kilobyte is

**kB**. Kilobyte is not same as Kibibyte (KiB) that contains 1024 bytes. 1000 Kilobytes = 1 Megabyte (MB)

One Kibibyte is defined as **2 ^{10}** or

**1024 Bytes**. Kibibyte is a binary unit defined as per IEC standard. The unit symbol for Kibibyte is

**KiB**. Kibibyte is not same as Kilobyte (KB) that contains 1000 bytes. 1024 Kibibyte = 1 Mebibyte (MiB)

One Megabit is defined as **10 ^{6}** or

**1000**. Megabit is a decimal unit defined as per SI standard. 1 Megabit = 1000 Kilobits. The unit symbol for Megabit is

^{2}Bits**Mbit**or

**Mb**. Megabit is not same as Mebibit (Mib) that contains 1024

^{2}bits. 1000 Megabits = 1 Gigabit (Gbit)

One Mebibit is defined as **2 ^{20}** or

**1024**. Mebibit is a binary unit defined as per IEC standard. 1 Mebibit = 1024 Kibibits. The unit symbol for Mebibit is

^{2}Bits**Mibit**. Mebibit is not same as Megabit (Mb) that contains 1000

^{2}bits. 1024 Mebibits = 1 Gibibit (Gibit)

One Megabyte is defined as **10 ^{6}** or

**1000**. Megabyte is a decimal unit defined as per SI standard. 1 Megabyte = 1000 Kilobytes. The unit symbol for Megabyte is

^{2}Bytes**MB**. Megabyte is not same as Mebibyte (MiB) that contains 1024

^{2}bytes. 1000 Megabytes = 1 Gigabyte (GB)

One Mebibyte is defined as **2 ^{20}** or

**1024**. Mebibyte is a binary unit defined as per IEC standard. 1 Mebibyte = 1024 Kibibytes. The unit symbol for Mebibyte is

^{2}Bytes**MiB**. Mebibyte is not same as Megabyte (MB) that contains 1000

^{2}bytes. 1024 Mebibytes = 1 Gibibyte (GiB)

One Gigabit is defined as **10 ^{9}** or

**1000**. Gigabit is a decimal unit defined as per SI standard. 1 Gigabit = 1000 Megabits. The unit symbol for Gigabit is

^{3}Bits**Gbit**or

**Gb**. Gigabit is not same as Gibibit (Gib) that contains 1024

^{3}bits. 1000 Gigabits = 1 Terabit (Tbit)

One Gibibit is defined as **2 ^{30}** or

**1024**. Gibibit is a binary unit defined as per IEC standard. 1 Gibibit = 1024 Mebibits. The unit symbol for Gibibit is

^{3}Bits**Gibit**. Gibibit is not same as Gigabit (Gb) that contains 1000

^{3}bits. 1024 Gibibits = 1 Tebibit (Tibit)

One Gigabyte is defined as **10 ^{9}** or

**1000**. Gigabyte is a decimal unit defined as per SI standard. 1 Gigabyte = 1000 Megabytes. The unit symbol for Gigabyte is

^{3}Bytes**GB**. Gigabyte is not same as Gibibyte (GiB) that contains 1024

^{3}bytes. 1000 Gigabytes = 1 Terabyte (TB)

One Gibibyte is defined as **2 ^{30}** or

**1024**. Gibibyte is a binary unit defined as per IEC standard. 1 Gibibyte = 1024 Mebibytes. The unit symbol for Gibibyte is

^{3}Bytes**GiB**. Gibibyte is not same as Gigabyte (GB) that contains 1000

^{3}bytes. 1024 Gibibytes = 1 Tebibyte (TiB)

One Terabit is defined as **10 ^{12}** or

**1000**. Terabit is a decimal unit defined as per SI standard. 1000 Gigabits = 1 Terabit. The unit symbol for Terabit is

^{4}Bits**Tbit**or

**Tb**. Terabit is not same as Tebibit (Tib) that contains 1024

^{4}bits. 1000 Terabit = 1 Petabit (Pbit)

One Tebibit is defined as **2 ^{40}** or

**1024**. Tebibit is a binary unit defined as per IEC standard. 1 Tebibit = 1024 Gibibits. The unit symbol for Tebibit is

^{4}Bits**Tibit**. Tebibit is not same as Terabit (Tb) that contains 1000

^{4}bits. 1024 Tebibits = 1 Pebibit (Pibit)

One Terabyte is defined as **10 ^{12}** or

**1000**. Terabyte is a decimal unit defined as per SI standard. 1 Terabyte = 1000 Gigabytes. The unit symbol for Terabyte is

^{4}Bytes**TB**. Terabyte is not same as Tebibyte (TiB) that contains 1024

^{4}bytes. 1000 Terabytes = 1 Petabyte (PB)

One Tebibyte is defined as **2 ^{40}** or

**1024**. Tebibyte is a binary unit defined as per IEC standard. 1 Tebibyte = 1024 Gibibytes. The unit symbol for Tebibyte is

^{4}Bytes**TiB**. Tebibyte is not same as Terabyte (TB) that contains 1000

^{4}bytes. 1024 Tebibytes = 1 Pebibyte (PiB)

One Petabit is defined as **10 ^{15}** or

**1000**. Petabit is a decimal unit defined as per SI standard. 1 Petabit = 1000 Terabits. The unit symbol for Petabit is

^{5}Bits**Pbit**. Petabit is not same as Pebibit (Pib) that contains 1024

^{5}bits. 1000 Petabits = 1 Exabit (Ebit)

One Pebibit is defined as **2 ^{50}** or

**1024**. Pebibit is a binary unit defined as per IEC standard. 1 Pebibit = 1024 Tebibits. The unit symbol for Pebibit is

^{5}Bits**Pibit**. Pebibit is not same as Petabit (Pb) that contains 1000

^{5}bits. 1024 Pebibits = 1 Exbibit (Eibit)

One Petabyte is defined as **10 ^{15}** or

**1000**. Petabyte is a decimal unit defined as per SI standard. 1 Petabyte = 1000 Terabytes. The unit symbol for Petabyte is

^{5}Bytes**PB**. Petabyte is not same as Pebibyte (PiB) that contains 1024

^{5}bytes. 1000 Petabytes = 1 Exabyte (EB)

One Pebibyte is defined as or **1024 ^{5} Bytes**. 1 Pebibyte = 1024 Tebibytes. Pebibyte is a binary unit defined as per IEC standard. The unit symbol for Pebibyte is

**PiB**. Pebibyte is not same as Petabyte (PB) that contains 1000

^{5}bytes. 1024 Pebibytes = 1 Exbibyte (EiB)

One Exabit is defined as **10 ^{18}** or

**1000**. Exabit is a decimal unit defined as per SI standard. 1 Exabit = 1000 Petabits. The unit symbol for Exabit is

^{6}Bits**Ebit**. Exabit is not same as Exbibit (Eib) that contains 1024

^{6}bits. 1000 Exabits = 1 Zettabit (Zbit)

One Exbibit is defined as **2 ^{60}** or

**1024**. Exbibit is a binary unit defined as per IEC standard. 1 Exbibit = 1024 Pebibits. The unit symbol for Exbibit is

^{6}Bits**Eibit**. Exbibit is not same as Exabit (Eb) that contains 1000

^{6}bits. 1024 Exbibits = 1 Zebibit (Zibit)

One Exabyte is defined as **10 ^{18} ** or

**1000**. Exabyte is a decimal unit defined as per SI standard. 1 Exabyte = 1000 Petabytes. The unit symbol for Exabyte is

^{6}Bytes**EB**. Exabyte is not same as Exbibyte (EiB) that contains 1024

^{6}bytes. 1000 Exabytes = 1 Zettabyte (ZB)

One Exbibyte is defined as **2 ^{60}** or

**1024**. Exbibyte is a binary unit defined as per IEC standard. 1 Exbibyte = 1024 Pebibytes. The unit symbol for Exbibyte is

^{6}Bytes**EiB**. Exbibyte is not same as Exabyte (EB) that contains 1000

^{6}bytes. 1024 Exbibytes = 1 Zebibyte (ZiB)

One Zettabit is defined as **10 ^{21}** or

**1000**. Zettabit is a decimal unit defined as per SI standard. 1 Zettabit = 1000 Exabits. The unit symbol for Zettabit is

^{7}Bits**Zbit**. Zettabit is not same as Zebibit (Zib) that contains 1024

^{7}bits. 1000 Zettabits = 1 Yottabit (Tbit)

One Zebibit is defined as **2 ^{70}** or

**1024**. Zebibit is a binary unit defined as per IEC standard. 1 Zebibit = 1024 Exbibits. The unit symbol for Zebibit is

^{7}Bits**Zibit**. Zebibit is not same as Zetabit (Zb) that contains 1000

^{7}bits. 1024 Zebibits forms a Yobibit (Yibit)

One Zettabyte is defined as **10 ^{21}** or

**1000**. Zettabyte is a decimal unit defined as per SI standard. 1 Zettabyte = 1000 Exabytes. The unit symbol for Zettabyte is

^{7}Bytes**ZB**. Zettabyte is not same as Zebibyte (ZiB) that contains 1024

^{7}bytes. 1000 Zettabytes forms a Yottabyte (YB)

One Zebibyte is defined as **2 ^{70}** or

**1024**. Zebibyte is a binary unit defined as per IEC standard. 1 Zebibyte = 1024 Exbibytes. The unit symbol for Zebibyte is

^{7}Bytes**ZiB**. Zebibyte is not same as Zettabyte (ZB) that contains 1000

^{7}bytes. 1024 Zebibytes forms a Yobibyte (YiB)

One Yottabit is defined as **10 ^{24}** or

**1000**. Yottabit is a decimal unit defined as per SI standard. 1 Yottabit = 1000 Zettabits. The unit symbol for Yottabit is

^{8}Bits**Ybit**. Yottabit is not same as Yobibit (Yib) that contains 1024

^{8}bits

One Yobibit is defined as **2 ^{80}** or

**1024**. Yobibit is a binary unit defined as per IEC standard. 1 Yobibit = 1024 Zebibits. The unit symbol for Yobibit is

^{8}Bits**Yibit**. Yobibit is not same as Yottabit (Mb) that contains 1000

^{8}bits

One Yottabyte is defined as **10 ^{24}** or

**1000**. Yottabyte is a decimal unit defined as per SI standard. 1 Yottabyte = 1000 Zettabytes. The unit symbol for Yottabyte is

^{8}Bytes**YB**. Yottabyte is not same as Yobibyte (ZiB) that contains 1024

^{8}bytes

One Yobibyte is defined as **2 ^{80}** or

**1024**. Yobibyte is a binary unit defined as per IEC standard. 1 Yobibyte = 1024 Zebibytes. The unit symbol for Yobibyte is

^{8}Bytes**YiB**. Yobibyte is not same as Yottabyte (YB) that contains 1000

^{8}bytes

### Units- Value in Bits and Bytes

Unit Name | Value in Bits | Value in Bytes |
---|---|---|

bit | 1 | 0.125 |

Nibble | 4 | 0.5 |

Byte | 8 | 1 |

Kilobit | 1,000 | 125 |

Kibibit | 1,024 | 128 |

Kilobyte | 8,000 | 1,000 |

Kibibyte | 8,192 | 1,024 |

Megabit | 1,000,000 | 125,000 |

Mebibit | 1,048,576 | 131,072 |

Megabyte | 8,000,000 | 1,000,000 |

Mebibyte | 8,388,608 | 1,048,576 |

Gigabit | 1,000,000,000 | 125,000,000 |

Gibibit | 1,073,741,824 | 134,217,728 |

Gigabyte | 8,000,000,000 | 1,000,000,000 |

Gibibyte | 8,589,934,592 | 1,073,741,824 |

Terabit | 1,000,000,000,000 | 125,000,000,000 |

Tebibit | 1,099,511,627,776 | 137,438,953,472 |

Terabyte | 8,000,000,000,000 | 1,000,000,000,000 |

Tebibyte | 8,796,093,022,208 | 1,099,511,627,776 |

Petabit | 1,000,000,000,000,000 | 125,000,000,000,000 |

Pebibit | 1,125,899,906,842,624 | 140,737,488,355,328 |

Petabyte | 8,000,000,000,000,000 | 1,000,000,000,000,000 |

Pebibyte | 9,007,199,254,740,992 | 1,125,899,906,842,624 |

Exabit | 1,000,000,000,000,000,000 | 125,000,000,000,000,000 |

Exbibit | 1,152,921,504,606,846,976 | 144,115,188,075,855,872 |

Exabyte | 8,000,000,000,000,000,000 | 1,000,000,000,000,000,000 |

Exbibyte | 9,223,372,036,854,775,808 | 1,152,921,504,606,846,976 |

Zettabit | 1,000,000,000,000,000,000,000 | 125,000,000,000,000,000,000 |

Zebibit | 1,180,591,620,717,411,303,424 | 147,573,952,589,676,412,928 |

Zettabyte | 8,000,000,000,000,000,000,000 | 1,000,000,000,000,000,000,000 |

Zebibyte | 9,444,732,965,739,290,427,392 | 1,180,591,620,717,411,303,424 |

Yottabit | 1,000,000,000,000,000,000,000,000 | 125,000,000,000,000,000,000,000 |

Yobibit | 1,208,925,819,614,629,174,706,176 | 151,115,727,451,828,646,838,272 |

Yottabyte | 8,000,000,000,000,000,000,000,000 | 1,000,000,000,000,000,000,000,000 |

Yobibyte | 9,671,406,556,917,033,397,649,408 | 1,208,925,819,614,629,174,706,176 |