UUID Generator
Generate random UUID v4 identifiers for mock payloads, test fixtures and sample records.
Create one or several identifiers at once whenever you need a quick set of unique-looking IDs.
Result
Generated UUIDs will appear here.
What is UUID v4?
UUID v4 is a randomly generated 128-bit identifier written as hexadecimal segments. It is commonly used when you need globally unique IDs without coordinating with a central server.
Examples
7d36d95f-765e-4f2b-a9d9-0cb41e4ea0cb
FAQ
Is UUID v4 cryptographically secure?
In modern browsers, crypto.randomUUID() relies on a cryptographically secure source of randomness.
Can I generate multiple UUIDs at once?
Yes. The selector lets you create 1, 5 or 10 UUIDs in one click.
Do UUIDs guarantee uniqueness?
They do not offer a mathematical absolute guarantee, but collisions are extremely unlikely for practical use.
Learn how this tool is commonly used
Read the practical guide for UUID usage in APIs, databases, queues and test data.