UUID Generator
Generate random UUIDs (version 4) in bulk.
Options
About UUID v4
- 122 of its 128 bits are random, so collisions are effectively impossible in practice.
- This tool uses
crypto.getRandomValues()(a cryptographic RNG). - Generation happens entirely in your browser; nothing is sent to a server.
FAQ
- Can I use it as a database primary key?
- Yes, though unlike a sequence it has no meaningful sort order and tends to scatter index writes. Depending on your needs, ULID or UUID v7 may fit better.
- Uppercase or without hyphens?
- Toggle the options.