UG
UUID Generator
Generate a random UUID v4 (GUID) in one click — one or up to 100 in bulk, cryptographically secure. Copy and use directly.
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Result
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How to use — UUID Generator
- Select how many UUIDs you need (1 to 100).
- Optionally choose uppercase or without-dashes format.
- Click Generate UUID — UUIDs are created instantly.
- Use "Copy all" to copy all UUIDs to the clipboard.
FAQ
What is UUID v4?
UUID v4 is a 128-bit random identifier — format: xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx. It's built from random bits, so the probability of a collision is practically zero.
Can two UUIDs be the same?
Theoretically possible, practically no — there are 5.3 undecillion (10^36) combinations. To get a duplicate, you'd have to generate billions of UUIDs per second for years.
What's the difference between UUID and GUID?
Nothing — GUID (Globally Unique Identifier) is Microsoft's name for the same thing. They're interchangeable.
Are these UUIDs securely random?
Yes — the browser's crypto.randomUUID() / crypto.getRandomValues() is used, which is cryptographically secure. Not a weak generator like Math.random().
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