What is a UUID?
A UUID (Universally Unique Identifier) is a 128-bit number used to uniquely identify information in computer systems. It follows the RFC-4122 standard and is displayed as 32 hexadecimal digits in groups separated by hyphens.
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Bulk Generation
Frequently Asked Questions
Are these UUIDs unique?
Yes. Version 4 UUIDs are generated using cryptographically secure random numbers. The probability of generating a duplicate is astronomically low (approximately 1 in 5.3×10^36).
What is version 4?
UUID version 4 uses random or pseudo-random numbers for generation. It is the most common UUID type and provides excellent uniqueness guarantees without requiring coordination between systems.
How many can I generate?
You can generate unlimited UUIDs. Use the single generation mode for one UUID at a time, or bulk mode to generate 5, 10, or 50 UUIDs simultaneously.
Is the tool free?
Yes, UUIDMaker is completely free to use with no registration required. All generation happens in your browser for maximum privacy and speed.