1. UUID Settings
Choose a UUID version and output preferences.
UUID Generator
Generate unique UUID (Universally Unique Identifier) values instantly. Perfect for creating database IDs, session tokens, and unique reference keys.
UUID Generator
Generate RFC 9562 UUIDs for databases, APIs, distributed systems, namespaced identifiers, and application-specific use cases.
Configure the settings and generate UUIDs.
2. Generated UUIDs
Your generated values appear below.
UUIDNo UUIDs generated yet
Choose settings and generate one or more identifiers.
RFC 9562
Supports modern UUID versions 6, 7, and 8.
Instant Generation
Create up to 100 identifiers in one operation.
Developer Friendly
Formats for databases, APIs, and test data.
Browser Based
Generation and name hashing happen locally.
▣ All UUIDs are generated locally in your browser. Input data never leaves your device.
Practical guide
Using UUID Generator with confidence
Reviewed by LipiCode Editorial Team
What this tool helps you do
A UUID is a 128-bit identifier designed to be unique without a single central counter. Different versions make different trade-offs: randomness, time ordering, or deterministic generation from a namespace and name.
When it is useful
- Assigning public database identifiers
- Creating request correlation IDs
- Identifying distributed events
- Generating stable namespace-based IDs
A practical example
Use UUID v4 for an unpredictable random identifier. Use a time-ordered version where database insertion locality matters, after confirming that your platform supports it.
Limitations and common mistakes
A UUID does not prove authenticity and should not replace authorization. Store a consistent canonical representation, validate untrusted input, and avoid exposing time-derived details if that metadata matters.
Frequently asked questions
Can two generated UUIDs collide?
A collision is theoretically possible, but properly generated random UUIDs provide an enormous identifier space.
Should UUIDs be uppercase?
Hexadecimal case does not change the value; lowercase canonical text is common.