UUID Generator
Generate cryptographically random version-4 UUIDs (also called GUIDs) individually or in bulk. A UUID is a 128-bit identifier that is practically guaranteed to be unique without any central coordinator, which makes it ideal for database primary keys, request IDs, file names and distributed systems where two machines must never collide. This generator uses the browser's built-in secure random source, so the values are suitable for real use, not just placeholders. Choose how many you need, click generate, and copy them all at once. Nothing is generated on a server. Every UUID is created locally in your browser.
How to use UUID Generator
- Choose how many UUIDs you want.
- Click generate to create them.
- Copy a single UUID or the whole list.
Frequently asked questions
What version of UUID does this generate?
It generates version 4 UUIDs, which are random except for a few fixed version and variant bits. These are the most common general-purpose identifiers.
How random are the generated UUIDs?
They use the browser cryptographic random source, so collisions are astronomically unlikely across the roughly 122 random bits in a v4 UUID.
Can I generate many UUIDs at once?
Yes, you can request a batch and get a list of unique v4 UUIDs, then copy them all with one click.
What is UUID Generator?
Generate cryptographically random version-4 UUIDs (also called GUIDs) individually or in bulk. A UUID is a 128-bit identifier that is practically guaranteed to be unique without any central coordinator, which makes it ideal for database primary keys, request IDs, file names and distributed systems where two machines must never collide.
Is UUID Generator free to use?
Yes. UUID Generator is completely free, with no sign-up and no usage limits.
Does UUID Generator work in a web browser?
Yes. UUID Generator runs in any modern web browser. There is nothing to download or install.
Is my data private with UUID Generator?
Yes. UUID Generator runs entirely on your device in your browser, so nothing you enter is uploaded to a server.
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