UUID Generator
Developer ToolsGenerate random RFC 4122 version 4 UUIDs.
What is UUID Generator?
UUID Generator creates random RFC 4122 version 4 universally unique identifiers.
How to use UUID Generator
- 1 Choose how many UUIDs you need.
- 2 Copy a single value or the whole list.
Supported formats and limits
- Output: RFC 4122 version 4 UUIDs
- Runs in your browser
Common uses
- Create unique identifiers for database rows.
- Generate IDs for records without a central counter.
- Produce a batch of UUIDs for testing.
Things to know
- UUID v4 values are random, not sequential or sortable.
- Uniqueness is probabilistic, not guaranteed by collision checks.
Privacy and file handling
UUIDs are generated locally in your browser using the Web Crypto API.
Frequently asked questions
Are these UUIDs unique?
Version 4 UUIDs use random data, making collisions statistically negligible for practical use.
What is a UUID?
A universally unique identifier, a 128-bit value used to label records and objects so they do not collide across systems.
Are the generated UUIDs random?
The tool generates random version 4 UUIDs using a cryptographically secure random source.
Can I generate several UUIDs at once?
Yes. You can generate a batch and copy them individually or all together.
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