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UUID Generator
Generate UUID v1, v4 and v5.
About this tool
Processing happens directly in your browser. No files are uploaded to the server.
The UUID Generator creates universally unique identifiers in v1, v4 and v5 formats. UUIDs are widely used as database keys and unique IDs in software. Generation runs in your browser, instantly and for free.
How to use
- 1 Choose the UUID version you need (v1, v4 or v5).
- 2 Click Generate.
- 3 Copy the generated UUID.
- 4 Generate more as needed.
Frequently asked questions
Which UUID versions are supported?
Versions 1, 4 and 5 are available.
What is the difference between v1 and v4?
v1 is time and node based, while v4 is randomly generated; v4 is the most common general-purpose choice.
Are the UUIDs unique?
UUIDs are designed so collisions are extremely unlikely in practice.