Available Data units

• byte conversions

  A byte is a fundamental unit of digital information, typically comprising 8 bits. It is the standard unit for measuring file size, storage capacity, and data transfer quantities in computing.

• kilobyte (decimal) conversions

  A kilobyte in the decimal (SI) system is a data unit equal to 1,000 bytes. It is used by storage manufacturers and network providers to express file sizes and data transfer rates.

• megabyte (decimal) conversions

  A megabyte in the decimal system is a data unit equal to 1,000 kilobytes. It is commonly used by storage manufacturers, internet service providers, and operating systems to express file sizes and storage capacities.

• gigabyte (decimal) conversions

  A gigabyte in the decimal system is a data unit equal to 1,000 megabytes. It is widely used to express storage device capacity, RAM size, file sizes, and data transfer quotas in consumer electronics and networking.

• terabyte (decimal) conversions

  A terabyte in the decimal system is a data unit equal to 1,000 gigabytes. It is the standard unit used by hard drive and SSD manufacturers, cloud storage providers, and for internet traffic measurement.

• bit conversions

  A bit is the smallest unit of digital information, representing a value of either 0 or 1. It is used to express network bandwidth, signal data rates, and low-level binary data in computing and telecommunications.

• kibibyte (binary) conversions

  A kibibyte is a binary data unit equal to 1,024 bytes. It is the IEC-standard unit that precisely distinguishes binary-based kilobyte measurements from the decimal kilobyte used in storage marketing.

• mebibyte (binary) conversions

  A mebibyte is a binary data unit equal to 1,024 kibibytes, or 1,048,576 bytes. It is used in operating systems, RAM specifications, and software contexts where exact binary data sizes are required.

• gibibyte (binary) conversions

  A gibibyte is a binary data unit equal to 1,024 mebibytes, approximately 1.074 gigabytes. It is used by operating systems and technical documentation to express exact binary storage capacities.

• tebibyte (binary) conversions

  A tebibyte is a binary data unit equal to 1,024 gibibytes, approximately 1.1 terabytes. It is used in technical computing contexts, file systems, and database storage to express precise binary data quantities.

Assumption: both decimal (kB, MB, GB, TB) and binary (KiB, MiB, GiB, TiB) units are included.

Full Data conversion matrix

About Data

Digital information units

Real-world uses

Data units are central to computing, telecommunications, and digital media. Hard drives and SSDs are sold by gigabytes or terabytes. Internet service providers advertise bandwidth in megabits per second. Cloud storage bills by the gigabyte-month. Video streaming quality is defined by bitrate — 4K video typically requires 15–25 Mbps. Network engineers plan backbone capacity in terabits per second, and database administrators measure query throughput in bytes processed.

History

Claude Shannon's 1948 paper "A Mathematical Theory of Communication" formalised the bit as the fundamental unit of information. The byte (8 bits) was standardised by IBM in the early 1960s. As storage grew, the industry casually used "kilobyte" to mean both 1,000 and 1,024 bytes. In 1998, the International Electrotechnical Commission introduced binary prefixes (kibi, mebi, gibi) to resolve this ambiguity, though adoption remains uneven.

Common mistakes

The most pervasive confusion is between bits and bytes — ISPs advertise in megabits per second (Mbps), while files are sized in megabytes (MB), differing by a factor of eight. Another major pitfall is the KB ambiguity: storage manufacturers use 1 GB = 1,000,000,000 bytes, while operating systems historically used 1 GB = 1,073,741,824 bytes (1 GiB). People also mistakenly treat data transfer speeds as equivalent to download speeds, ignoring protocol overhead.

Measurement standards

The International Electrotechnical Commission (IEC 80000-13) defines binary prefixes: 1 KiB = 1,024 bytes, 1 MiB = 1,048,576 bytes. The SI decimal prefixes (kB = 1,000 bytes, MB = 1,000,000 bytes) apply to data units as they do to all SI quantities.

Did you know?

By 2025, the global datasphere is estimated to reach 181 zettabytes — roughly 181 trillion gigabytes. If stored on standard Blu-ray discs, the stack would reach from Earth to Mars and back over 20 times.

Common values