UUID v4 Generator
Generate cryptographically random UUIDs using the browser's built-in crypto.randomUUID() API.
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Format
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UPPERCASE
{Braces}
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UUID Version Reference
| Version | Generation Method | Common Use |
|---|---|---|
| v1 | Timestamp + MAC address | Time-ordered logs |
| v3 | MD5 hash of namespace + name | Deterministic IDs |
| v4 | Random (this tool) | General purpose |
| v5 | SHA-1 hash of namespace + name | Deterministic IDs |
| v7 | Unix timestamp + random | Sortable modern IDs |
UUID v4 is the safest choice when you need unique IDs without coordination — perfect for database primary keys, API keys, and session tokens.