UUIDv4 Generator
Generate random version 4 UUIDs for database keys and test data.
UUIDv4 Generator
A UUID is a 128-bit identifier that is unique for all practical purposes without needing a central authority. Version 4 UUIDs are generated from random numbers, so you can create them anywhere.
How to use UUIDv4 Generator
- Open the tool to see a freshly generated UUID.
- Click the generate button for a new one.
- Use Copy to copy it.
When it comes in handy
- Creating primary keys and record IDs for databases.
- Generating unique request, session and file identifiers.
- Filling test data with realistic IDs.
Frequently asked questions
Can two UUIDs ever be the same?
In theory yes, but with random version 4 UUIDs the chance is so small that it is ignored in practice.
What does the 4 in the middle mean?
It marks the version. In a UUIDv4 the first digit of the third group is always 4.
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