UUID Tools

Generate, parse, and validate universally unique identifiers.

Available tools

Max UUID Return the RFC 9562 Max UUID, whose 128 bits are all one and which can serve as an upper sentinel value.
Nil UUID Return the RFC 9562 Nil UUID, whose 128 bits are all zero and which represents an absent UUID value.
Seeded UUID Generator Generate reproducible v4-format identifiers from injected or seeded randomness.
UUID Parser Parse Nil, Max, and UUID versions 1 through 8 into normalized text, bytes, version, variant, semantic kind, and available time or DCE fields.
UUID v1 Generator Generate RFC 9562 version 1 UUIDs from a Gregorian 100-nanosecond timestamp, clock sequence, and 48-bit node identifier.
UUID v2 DCE Security Generator Generate a DCE Security UUID version 2 from a local UID/GID-style identifier, local domain, timestamp, clock sequence, and node identifier.
UUID v3 Generator Generate deterministic RFC 9562 version 3 UUIDs by hashing a namespace UUID and UTF-8 name with MD5.
UUID v4 Generator Generate RFC 9562 version 4 UUIDs from 122 random bits, with an optional seed for reproducible results.
UUID v5 Generator Generate deterministic RFC 9562 version 5 UUIDs by hashing a namespace UUID and UTF-8 name with SHA-1.
UUID v6 Generator Generate RFC 9562 version 6 UUIDs with the version 1 timestamp fields reordered for database-friendly lexical sorting.
UUID v7 Generator Generate time-ordered RFC 9562 version 7 UUIDs from a Unix millisecond timestamp and random bits.
UUID v8 Generator Generate RFC 9562 version 8 UUIDs with application-defined random payload bits while preserving the version and RFC variant fields.
UUID Validator Check whether text uses the canonical UUID hexadecimal and hyphen layout, then report its version nibble.

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