UUID Generator
Generate random version 4 UUIDs in bulk.
About the UUID Generator
A UUID (Universally Unique Identifier), sometimes called a GUID, is a 128-bit value used to label data without a central authority — for database keys, file names, session tokens and distributed systems. This generator produces version 4 UUIDs, which are random, using your browser's cryptographically secure random number generator. The odds of a collision are astronomically small, so you can generate as many as you need with confidence.
How to use it
- Choose how many UUIDs you want (up to 100 at a time).
- Optionally switch to uppercase.
- Click Generate, then Copy all to grab the whole list.
Frequently asked questions
What is a version 4 UUID?
A version 4 UUID is generated from random numbers, with a few bits fixed to mark the version. It is the most common UUID type for general-purpose unique IDs.
Are these UUIDs truly unique?
They are practically unique. With 122 random bits, you would need to generate billions per second for many years before a collision became likely.
Are they generated securely?
Yes. The tool uses crypto.randomUUID or crypto.getRandomValues, both backed by a cryptographically secure random source in your browser.
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