Developer Tools

🆔 UUID Generator

Generate cryptographically random UUID v4 identifiers instantly. Everything runs in your browser — no server calls, no tracking.

Your UUID v4

Click "Generate" to get your UUID

About the UUID Generator

This free online UUID generator uses the crypto.randomUUID() Web API (or a cryptographically secure fallback) to produce RFC 4122-compliant UUID v4 identifiers entirely in your browser — nothing is sent to a server.

  • UUID v4 — randomly generated, with 122 bits of entropy. The probability of collision is astronomically small.
  • Bulk generation — generate up to 100 UUIDs at once.
  • Multiple formats — standard, UPPERCASE, no hyphens, curly braces or URN prefix.
  • History — every UUID you generate in the session is stored in a scrollable history list.
  • Export — copy all UUIDs to the clipboard or download them as a .txt file, one per line.

UUIDs are commonly used as primary keys in databases, unique filenames, session tokens, API request IDs and distributed system identifiers.