Data Storage

What is a Byte? (B)

Definition

A byte is the fundamental unit of digital information storage. It consists of 8 bits and can represent 256 different values (0–255). Bytes are the basic building block for measuring file sizes, memory, and storage capacity. All digital data — text, images, video, code — is ultimately stored as bytes.

Common Uses

  • › File size measurement
  • › Memory and RAM capacity
  • › Network data transfer
  • › Text and character encoding

Key Facts

  • Symbol
    B
  • Category
    Data Storage
  • 1 byte = 8 bits
  • 1,024 bytes = 1 KB
  • 1 byte = 2 hexadecimal digits
  • 1 ASCII character = 1 byte

Related Terms

About the Byte

A byte is the fundamental unit of digital information storage. It consists of 8 bits and can represent 256 different values (0–255). Bytes are the basic building block for measuring file sizes, memory, and storage capacity. All digital data — text, images, video, code — is ultimately stored as bytes.

Equivalents and conversions

  • 1 byte = 8 bits
  • 1,024 bytes = 1 KB
  • 1 byte = 2 hexadecimal digits
  • 1 ASCII character = 1 byte

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