Free Online UUID / GUID Generator
Generate RFC 4122 compliant Version 4 UUIDs using hardware cryptographic randomness in bulk.
How to Use the UUID / GUID Generator
- Choose how many UUIDs you need.
- Select your preferred formatting toggles (hyphens, uppercase).
- Click 'Generate UUIDs'.
- Copy the list or download the text file.
Key Features
About UUID / GUID Generator
Generate Version 4 UUIDs (Universally Unique Identifiers) built on the native browser `crypto.randomUUID()` method, ensuring 122 bits of cryptographic unpredictability.
Frequently Asked Questions
How unique is a Version 4 UUID?
With 122 bits of pure randomness, the probability of a duplicate is approximately 1 in 2.71 quintillion, making collision practically impossible.
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