UUID Generator
Generate v4 UUIDs instantly, one or in bulk.
How to Use UUID Generator
- 1Set how many UUIDs you want to generate (1–100).
- 2Click 'Generate' to create them.
- 3Copy all UUIDs at once or regenerate a fresh batch.
Frequently Asked Questions
What is a UUID v4?
A Universally Unique Identifier generated from random numbers. The probability of collision is astronomically small — making them safe to use as unique IDs without a central registry.
Are these truly random?
Yes — they use the browser's crypto.randomUUID() which draws from a cryptographically secure random number generator.
Can I use these as database primary keys?
Yes — UUID v4 is widely used as a primary key in distributed systems where auto-increment integers aren't practical.
About UUID Generator
UUIDs (Universally Unique Identifiers) are 128-bit values used as unique identifiers in databases, APIs, file systems, and distributed systems. Version 4 UUIDs are generated from random bits and are statistically guaranteed to be unique.
Our UUID Generator uses the browser's built-in crypto.randomUUID() function — a cryptographically secure source — to produce properly formatted v4 UUIDs in the standard 8-4-4-4-12 hyphenated format.