UUID Generator (v1–v7)
Generate UUIDs in every version: sortable v7 and v6, classic random v4, time-based v1, deterministic v3 (MD5) and v5 (SHA-1) with namespaces, plus nil. Bulk, uppercase, and hyphen options. Crypto-grade randomness, fully client-side.
Options
Unix-ms timestamp + random. Sortable. Modern default.
Results
Press Generate. v1/v4/v6/v7 use crypto-grade randomness, locally.
How to use
- Pick version: v7 for sortable keys, v4 for random, v3/v5 with namespace plus name for deterministic IDs.
- Set count, hyphens, and uppercase toggles.
- Press Generate and copy the list.
FAQ
Which version should I use?
v7 for new database keys (sortable, fast inserts). v4 for general randomness. v5/v3 when the same name must always map to the same ID.
Are these cryptographically random?
Yes, v1/v4/v6/v7 use crypto.getRandomValues. v3/v5 are deterministic hashes, and nil is all zeros.