UUID Generator
Generate random Version 4 UUIDs (Universally Unique Identifiers) in bulk.
Did you know?The probability of a duplicate UUIDv4 is effectively zero. You could generate 1 billion UUIDs per second for 85 years before hitting a likely collision.
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Understanding UUIDs
What is a UUID?
A Universally Unique Identifier (UUID) is a 128-bit label used to identify information in computer systems. You might also hear the term GUID (Globally Unique Identifier), which is often used in Microsoft environments. They are effectively the same thing.
Why use Version 4 (v4)?
There are several versions of UUIDs. This tool generates Version 4. This is the industry standard for most web applications because:
- Privacy: Unlike v1, it does not use your computer's MAC address.
- Uniqueness: The math makes it statistically impossible to generate the same ID twice.
Is this secure?
Yes. We use the cryptographic standard crypto.randomUUID() built directly into your browser. The IDs are generated locally on your device and are never sent to our servers.
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