UUID Generator
Generate RFC 4122 compliant UUID v4 identifiers in bulk.
How to use
- Choose how many UUIDs you need.
- Select formatting options such as uppercase or no hyphens.
- Click Generate.
- Copy the list or download it as a text file.
About this tool
UUID Generator creates unique identifiers that follow the RFC 4122 version 4 specification. Developers use it to seed databases, create test fixtures, or produce stable keys for distributed services without relying on a central authority.
Features
Bulk generation, optional uppercase output, removal of hyphens for compact storage, copy and download buttons, and cryptographically strong randomness backed by the browser crypto API. You can regenerate lists instantly until you have the batch you need.
Use cases
Populating primary keys in new tables, generating API keys for internal services, labelling log events across microservices, and creating unique file names for uploads and caches.
Why choose this tool
It runs offline in your browser, so no identifiers are ever recorded on a server. The minimal interface makes it easy to produce exactly the format your system expects, and the download option simplifies importing values into spreadsheets or SQL scripts.
FAQ
- Are the UUIDs cryptographically random?
- Yes. The generator uses the browser crypto API to produce high-quality random values suitable for most applications.
- Can I generate thousands at once?
- Yes. The tool can emit several thousand identifiers in a single click without noticeable delay.
- Will generated IDs collide?
- The probability of collision for random v4 UUIDs is astronomically small and safe for distributed systems.