UUID Generator
Generate UUID v4 or v1 directly in your browser. Fast and secure.
Result:
- Up to 100 UUIDs at a time
- Generation happens in your browser
- UUID v4 — cryptographically secure
About the UUID generator
UUID (Universally Unique Identifier) is a 128-bit identifier used for unique identification of objects in databases, APIs and distributed systems. The standard is described in RFC 4122.
Our generator creates UUIDs directly in your browser using a cryptographically secure random number generator (crypto.randomUUID()). Data is not sent to the server.
What the generator can do
- UUID v4 — random, the most popular.
- UUID v1 — based on time and MAC address.
- Up to 100 UUIDs at a time.
- Options: uppercase, without dashes.
How to use
- Choose the UUID version (v4 or v1).
- Specify the count.
- Click "Generate" and copy the result.
Frequently asked questions
What is UUID? UUID is a 128-bit unique identifier. Used in databases, APIs and distributed systems.
How is v4 different from v1? v4 is completely random. v1 is based on time and MAC address. v4 is safer and more popular.
Can UUID repeat? Probability of v4 repeat is 1 in 2^122. This is practically impossible.
Is it safe to use the generator? Yes. Everything is generated in the browser, data is not sent to the server.