UUID Generator
Generate UUID v4, v7 and NanoIDs in bulk.
How to use the UUID Generator
- 1 Pick a format: UUID v4, UUID v7 or NanoID.
- 2 Choose how many IDs you need (and the NanoID length).
- 3 Toggle uppercase or remove dashes if desired, then generate and copy.
Frequently asked questions
Are these UUIDs unique?
They are generated from your browser’s cryptographically strong randomness, making accidental collisions effectively impossible.
What is the difference between UUID v4 and v7?
v4 is fully random. v7 embeds a millisecond timestamp at the start so IDs sort chronologically — useful as database keys because they keep inserts roughly sequential.
When should I use a NanoID instead?
NanoID is shorter than a UUID and URL-safe, making it ideal for public-facing IDs in links and slugs while keeping a very low collision risk.