• A Byte is a unit of data measurement which mainly consists of eight bits and a basic unit of storage capacity in the computer systems.
• A byte is a series of binary digits, which contain ‘0’ or ‘1’.
• A byte is represented as upper-case ‘B’ whereas a bit is represented by small-case “b”.
• It is also used by computers to represent the characters such as numbers, letters or symbols.
• A single byte can be used for indicating the 2⁸ or 256 different values.
• These values start from 00000000 Binary to 11111111 Binary.
• A nibble is a data unit which comes before the Byte. And, kilobyte comes after it.
• The byte is used for measuring the size of memory and the speed of data transfer. Examples of bytes in memory size:

• Kilobytes,
• Megabytes,
• Gigabytes,
• Terabytes, etc.

And, the examples of the speed of data transfer:

• Kilobytes per second,
• megabytes per second, etc.

Kilobyte

• A KB is the unit symbol for the ‘Kilobyte‘.
• A Kilobyte is made up of multiple-unit bytes, which stores the digital information and denotes data size.
• And the short forms of kilobyte are K, K-byte, and kByte.
• In the word kilobyte, kilo denotes the 1000 or third power of 10, which means 10³.
• In computer science and IT, the kilobyte refers to as 1024 or 2¹⁰ bytes.
• A kilobyte is that unit, which is larger than a byte (B) and smaller than the unit megabyte (MB).
• Kilobyte is used for measuring the size of small files.

Megabyte

• A ‘Mb‘ is the unit symbol for the Megabyte.
• A Megabyte is a made up of multiple unit bytes, which stores the digital information and denotes the size of data.
• And, the short form of Megabyte is Mbyte or meg.

In the word megabyte, mega denotes the sixth power of 10, which means 10⁶.

1 Megabyte is equivalent to the following values:

• 10⁶ bytes (B),
• 1,000,000 bytes (B),
• 2²⁰ bytes (B),
• 1,024 kilobytes (Kb) or
• 1,048,576 bytes.
• A megabyte is that unit which is larger than a kilobyte (Kb) and smaller than the unit gigabyte (Gb).
• A megabyte is used for measuring the size of large files.
• It also measures the text format, bitmap images, video files, or compressed/uncompressed audio files.

Gigabyte

• A Gb is a unit symbol for the Gigabyte.
• A gigabyte is made up of multiple-unit bytes, which stores the digital information and denotes the size of data.
• The short form of Gigabyte is ‘Gbyte‘.
• In the word gigabyte, Giga denotes the ninth power of 10, which means 10⁹.
• In computer science and IT, the GB unit equals to 1024³ or 2³⁰ bytes.
• 1 Gigabyte is equivalent to the following values:

• 2³⁰ bytes,
• 1,000,000,000 bytes (B),
• 1,000 megabytes (MB).
• A gigabyte is that unit, which is larger than a megabyte and smaller than the unit terabyte.
• This unit is used for measuring the storage capacity.
• A solid-state drive may hold the capacity of 256 GB, and the hard drive may store the capacity of 750 GB.
• The Random-Access Memory (RAM) is also measured in Gigabytes like 1GB RAM, 2GB RAM, or 4GB RAM.

Terabyte

• A terabyte is made up of multiple bytes, which stores the digital information and denotes data size.
• TB is a unit symbol for the terabyte.
• And the short form of Terabyte is Tbyte.
• In the word terabyte, Tera denotes the fourth power of 1000, and means 10¹².
• A terabyte is approximate 1 trillion bytes.
• A petabyte just comes after the terabyte, i.e., is smaller than the petabytes and larger than the gigabytes.

Terabyte is equivalent to the following values:

• 10¹² bytes,
• 1000 GB (gigabytes),
• 1 Tebibyte,
• 1,000,000,000,000 bytes
• Mostly, terabytes are used for measuring the capacity of large storage devices.
• Around the year of 2007, the hard drives of consumers reached the storage capacity of 1 TB.
• It is a unit, which also measures the bandwidth or the data transferred in a certain amount of time.

Petabyte

• A Pb is the unit symbol for the ‘Petabyte‘.
• A Petabyte is made up of multiple-unit bytes, which stores the digital information and denotes the size of data.
• And, the short form of Petabyte is Pbyte.

A petabyte is equal to 10¹⁵ bytes or 2⁵⁰ bytes.

1 Petabyte is equivalent to the following values:

• 1024 Terabytes (Tb),
• 1 million gigabytes, or
• 1,000,000,000,000,000 bytes.
• The size of the petabyte is slightly less than pebibyte.
• A petabyte is rarely used in measuring the storage capacity of devices.
• It is mostly used for measuring the data, which is stored in large computer networks or server farms.
• Like, Facebook and Google, two internet companies store more than 100 petabytes of data on their servers.
• Petabyte (Pb) is that unit that is larger than a terabyte (Tb) and smaller than the unit exabyte (Eb).

Exabyte

• An exabyte is made up of multiple bytes, which stores the digital information and is used to denote data size.
• A byte is made up of 8 bits.
• A bit is a single unit of data.
• A bit can be ‘0’ or ‘1’.
• ‘EB’ is a unit symbol for the exabyte.
• And the short form of Exabyte is Ebyte.
• In the word exabyte, ‘exa’ denotes the multiplication by the sixth power of 1000.

Exabyte is equivalent to the following values:

• 10¹⁸ bytes,
• 1000⁶ bytes,
• 1000 petabytes,
• 1,000,000,000,000,000,000 ( 1 quintillion) Bytes,
• 1 billion gigabytes,
• 1 million terabytes, or
• 1,000,000 terabytes.
• And, 1000 EB (Exabyte) equals to 1ZB (Zettabyte).
• Exabytes is a unit, which is slightly smaller than the exbibytes.
• The exbibytes contain 2⁶⁰ bytes.
• The exabyte unit is so large, so it is used to measure the sum of multiple storage networks or measure the data amount transferred over the internet in a specific amount of time.