UUID Generator
Generate v4 UUIDs securely in your browser.
Informational only; verify critical results independently.
How to use
- Choose how many UUIDs you need (1, 5, 10, or more).
- Click Generate; each UUID is created with crypto.getRandomValues.
- Copy a single UUID or the full list; paste into your app, DB, or config.
- Generate again for a new set; we don’t store or log any IDs.
- Use for API request IDs, primary keys, or any unique identifier.
- Format is standard RFC 4122 v4 (e.g. xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx).
Examples
- 1 UUID for an API request ID
- 10 UUIDs for test user IDs
- 100 UUIDs for a database seed file
- 5 UUIDs for session or correlation IDs
- One UUID for a new resource slug
- 20 UUIDs for batch import keys
FAQ
- Is it secure?
- Uses crypto.getRandomValues; generation is local and not sent anywhere.
- v4 only?
- Yes. We generate random v4 UUIDs; v1 (time-based) and others aren’t supported here.
- Can two people get the same UUID?
- Extremely unlikely. v4 has 122 random bits; collision risk is negligible for normal use.
- Are these suitable for security (e.g. tokens)?
- They’re random IDs. For secrets or tokens, use a proper secret/token generator and storage.
- Why hyphens?
- Standard format; many systems expect 8-4-4-4-12. Strip hyphens if your system needs a continuous string.
- Where are they generated?
- In your browser only; nothing is sent to our servers.
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Last updated: 2025-09-16