Universally unique identifier
A universally unique identifier is a standardised alphanumeric code used to distinguish information or objects in computer systems.
How big is it?
16 B of data
Data volume · specified
A little perspective
About the same scale as IPv6 address.
IPv6 address: An IPv6 address is a numerical label used to identify devices on a computer network using the Internet Protocol version 6.
Measurements, assumptions & sources +
Universally unique identifier
A curated universally unique identifier comparison anchor. The representative value and any stated range preserve the backlog measurement convention; operating or experimental conditions can change real observations.
Defined examples — our methodology
The marked data volume is calibrated. Unmeasured illustration details are representative.
IPv6 address
A curated ipv6 address comparison anchor. The representative value and any stated range preserve the backlog measurement convention; operating or experimental conditions can change real observations.
Defined examples — our methodology
The marked data volume is calibrated. Unmeasured illustration details are representative.
Change your perspective
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Choose a suggestion to redraw the comparison, or open its page to learn what it is.
Why this measurement?
Why we use 16 B
For comparison, this page uses data volume. The record labels this value specified, so the stated convention rather than an inferred average controls the comparison.
A curated universally unique identifier comparison anchor. The representative value and any stated range preserve the backlog measurement convention; operating or experimental conditions can change real observations.
The identifying illustration and the numerical comparison remain separate. How calibrated comparisons work →
Recorded properties
Universally unique identifier dimensions and measurements
| Property | Selected value | Recorded range | Basis |
|---|---|---|---|
| 16 B | Not recorded | specified |
Around this scale
Go smaller. Go bigger.
These links use compatible data records, ordered around the selected value.
Nearest lower value · DigitalEthernet MAC address6 BAn Ethernet MAC address is a unique identifier assigned to network interfaces for communications on physical networks.Around the same scale · DigitalIPv6 address16 BAn IPv6 address is a numerical label used to identify devices on a computer network using the Internet Protocol version 6.Nearest higher value · DigitalSHA-256 digest32 BA SHA-256 digest is a unique digital fingerprint generated from input data using the SHA-256 cryptographic hash algorithm.Sources and method
Want to check the number?
The source records and measurement method remain available for inspection.
There’s always another scale
Follow your curiosity.
DigitalIPv6 address16 BAn IPv6 address is a numerical label used to identify devices on a computer network using the Internet Protocol version 6.DigitalSHA-256 digest32 BA SHA-256 digest is a unique digital fingerprint generated from input data using the SHA-256 cryptographic hash algorithm.DigitalGPS navigation message subframe37.5 BA GPS navigation message subframe is a segment of digital data transmitted by GPS satellites to provide positioning and timing information to receivers.
DigitalASCII character1 BAn ASCII character is a letter, digit, punctuation mark or control code encoded using the American Standard Code for Information Interchange.DigitalEthernet MAC address6 BAn Ethernet MAC address is a unique identifier assigned to network interfaces for communications on physical networks.DigitalIPv4 address4 BAn IPv4 address is a numerical label used to identify a device on a computer network that uses Internet Protocol version 4 for communication.DigitalEd25519 digital signature64 BAn Ed25519 digital signature is a cryptographic value used to verify the authenticity and integrity of digital messages or documents.DigitalBitcoin block header80 BA Bitcoin block header is a fixed-format data structure containing summary information about a block in the Bitcoin blockchain.