UUID Generator
Generate bulk random UUIDs (v4 and v1) instantly. Free online UUID / GUID generator tool.
Generator Settings
Examples
5c8b54e5-c8bc-4552-a821-d0d2cfd167f1Frequently Asked Questions
What is a UUID / GUID?
A Universally Unique Identifier (UUID) or Globally Unique Identifier (GUID) is a 128-bit label used for information in computer systems to uniquely identify resources.
What is the difference between UUID v4 and v1?
UUID v4 is generated using random numbers, making it highly secure and unpredictable. UUID v1 is generated based on a timestamp and the MAC address (or pseudo-random node), making it chronologically sortable.
How safe is it to generate IDs online?
Our generator uses the Web Crypto API `crypto.randomUUID` directly inside your browser. No IDs are generated on or transmitted to a server, ensuring no one else knows your IDs.
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