UUID Generator
Generate RFC 4122 v4 UUIDs in bulk.
About UUID Generator
UUID Generator is a free online tool. Generate random version 4 UUIDs in bulk for database keys, test data and unique identifiers. It runs entirely in your browser, so there is nothing to install, no account to create and no watermark added to your result.
How to use UUID Generator
- Type or paste your text into the input box.
- Pick any options that appear, then run the tool or watch the live result.
- Copy the output with the copy button.
Worked example
A version 4 UUID looks like 123e4567-e89b-42d3-a456-426614174000, with a 4 starting the third group.
Tips for best results
- Random UUIDs are practically collision-free, but store them as binary or a native UUID type for efficient indexing.
- Everything runs in your browser, so you can use UUID Generator even on a slow connection once the page has loaded.
Limits to keep in mind
- Results depend on the input you provide. Review the output before you use it somewhere important.
Frequently asked questions
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