UUID Generator
Generate random UUID v4 or timestamp-based UUIDs instantly. Bulk generate up to 100 at once.
Click a button above to generate UUIDs
About UUID Generator
This free online UUID generator creates universally unique identifiers instantly in your browser. UUIDs (Universally Unique Identifiers) are 128-bit numbers used to identify resources without a central authority.
UUID Versions
- UUID v4 — Randomly generated. The most commonly used version. 122 bits of randomness with a near-zero chance of collision.
- Timestamp-based UUID — Encodes the current timestamp in the first segment, making UUIDs sortable by creation time. Similar to UUID v7 (RFC 9562).
Common Uses for UUIDs
- Database primary keys
- Distributed system identifiers
- Session tokens and correlation IDs
- File and resource naming