UUID Generator

Generate UUIDs with collision probability calculator

Generate UUIDs

Time-based UUID using random node ID for privacy

Unix timestamp-based sortable UUID (draft RFC)

Collision Probability

Validate UUID

UUID Version Comparison

Feature v1 v4 v5 v7
Basis Timestamp + MAC Random SHA-1 Hash Timestamp + Random
Uniqueness High Very High Deterministic Very High
Sortable Yes No No Yes
Privacy Low High High High
Use Cases Legacy systems General purpose Deterministic IDs Databases, APIs

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