UUID Generator
Generate random UUID v4 and time-ordered UUID v7 identifiers in bulk, using the browser cryptographic random API. Copy one or all with a click.
How to use
- Pick the version (v4 or v7) and how many UUIDs you need.
- Click Generate — the list appears instantly.
- Copy one UUID or the whole list.
What is UUID Generator?
A UUID (Universally Unique Identifier) is a 128-bit identifier that is practically guaranteed to be unique without any central coordination. UUID v4 is fully random; UUID v7 embeds a millisecond timestamp, which makes values sort chronologically — increasingly the preferred choice for database primary keys.
All identifiers are generated with your browser's cryptographic random number generator, so their randomness is as strong as the operating system provides.
Frequently asked questions
What is the chance of a UUID collision?
For v4 you would need to generate billions of UUIDs per year for thousands of years to expect a single collision — treat them as unique.
Why choose UUID v7?
v7 values start with a timestamp, so they sort chronologically. This improves database index locality and insert performance compared to fully random v4.
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