Free tools
Generate random UUIDs with one click.
Runs locally · nothing is uploaded
a4f9fd08-2f17-4cc9-a20d-7bc59c5925c0
9abad791-0616-4c6b-a0a9-0a6c16768cc4
34e143ae-e752-46a3-96da-7ad812e07a65
996ecdba-32c1-4383-8ce7-a0c6f60c8d72
7e7ecd47-061e-41a2-98b6-ee7a7996a5c7Made by your browser’s secure generator, the same kind of randomness used for encryption keys.
Choose how many you need and copy them all in one click, one per line.
Version 4 UUIDs in the usual 8-4-4-4-12 form, ready for databases and APIs.
A UUID (universally unique identifier) is a 128-bit ID written as 36 characters, like 3f2b8c1e-9a4d-4e7b-8f10-2c6d5e9a7b31. Because version 4 UUIDs are random, anyone can create them without a central registry and still never clash.
Use them wherever you need an ID before the database gives you one: records, files, requests, test data.
This tool is built by ToolClack and, like everything we make, it is local-first: your data stays in your browser.
In practice, no. A version 4 UUID carries 122 random bits: you could generate billions every second for years before a collision became likely.
Version 4, the random kind, which is what most databases and APIs expect when they ask for a UUID.
No. They come from your browser’s crypto.randomUUID, so nobody else ever sees them.
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