Generate cryptographically random UUID version 4 values, or time-based version 1 style UUIDs, in bulk. Randomness comes from the browser crypto API and nothing is uploaded. 100% Local
How to Use the UUID Generator
Choose the version and how many UUIDs you need, then press Generate. Copy the whole list with one click.
About the versions
Version 4 uses crypto.getRandomValues for 122 bits of randomness.
Version 1 uses the current time and a random node value; it is time-ordered.
Generated values are statistically unique but not guaranteed to be.
Features
UUID v4 with a cryptographic random source
Time-based UUID v1 style values
Bulk generation up to 100 at once
All processing runs locally in your browser. Nothing you generate is uploaded to any server.
Generated identifiers are tool output — check your own uniqueness requirements before relying on them.