UUID Generator
⚡ Runs locally🔒 No uploads🆓 Free, no sign-up
Need database IDs, request IDs or test fixtures? Generate up to 500 cryptographically secure UUID v4s at once, in standard, hyphen-less or uppercase format.
Uses your browser's crypto-grade random generator — suitable for real identifiers, not just demos.
How to use
- Set how many UUIDs you need (1–500)
- Pick a format: standard, no-hyphens, or uppercase
- Click “Generate” and “Copy all”
FAQ
Are these real UUID v4s?
Yes — version and variant bits are set per RFC 4122, and randomness comes from crypto.getRandomValues().
Can I generate them in bulk?
Yes, up to 500 per click, then copy them all at once.
Are generated UUIDs unique?
Each is independently random; v4 collision odds are negligible for practical use.