UUID Generator
Generate random version 4 UUIDs (GUIDs) in bulk – up to 100 at once, with options for uppercase, hyphens and braces.
Runs in your browser Free · No sign-up
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How to use the UUID Generator
- Choose how many UUIDs you need.
- Set the format: uppercase, with or without hyphens, with or without braces.
- Click “Generate” and copy the list.
About this tool
UUIDs are 128-bit identifiers used as database keys, file names and request IDs. Version 4 UUIDs are random, so collisions are practically impossible. This generator uses your browser’s cryptographic random number generator.
- Private: your data is processed on your device and never uploaded.
- Free with no account, limits or watermarks.
- Fast: results appear instantly, even offline once the page has loaded.
Frequently asked questions
What is the difference between a UUID and a GUID?
They are the same thing. GUID is the name Microsoft uses; the format is identical.
Can two generated UUIDs ever be the same?
In theory yes, but the chance is so small (one in about 5×10³⁶) that it can be ignored in practice.
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