UUID v4 Generator - Secure Random GUIDs
Generate one or many valid UUID version 4 identifiers with cryptographically secure randomness, then copy the generated GUIDs instantly.
UUID GENERATOR
Universally Unique Identifiers (UUIDs) are 128-bit numbers used to uniquely identify information in computer systems.
Our tool generates version 4 (random) UUIDs completely client-side.
Choose a quantity from 1 to 100, decide whether to keep the standard hyphens and lowercase letters, then generate and copy the UUIDs as a newline-separated list. This is useful for test records, database keys, fixtures, and request IDs that need independent random identifiers.
A UUID v4 is an identifier, not an access token, password, or encryption key. Removing hyphens produces a compact 32-character value rather than the canonical UUID text format, and uppercase changes presentation only. Collisions are extremely unlikely, but systems that require uniqueness should still enforce a unique constraint.
Frequently Asked Questions
- What is a UUID?
- A Universally Unique Identifier (UUID) is a 128-bit label used for information in computer systems.
- Are these UUIDs unique?
- Yes, the probability of a collision is astronomically low.
- Is it free?
- Yes, 100% free and open.
- Can I generate in bulk?
- Yes, you can generate up to 100 UUIDs at a time.
Related free tools
Loading the interactive tool…