Generate unique IDs for databases
Use UUIDs as primary keys or unique identifiers in relational or NoSQL databases.
Free • No signup • Fast
UUID v4 Generator Online for APIs, Databases and Testing
You can generate from 1 to 100 UUIDs at a time.
Generated UUIDs
Related tools
- JSON Formatter Use UUIDs inside payloads, fixtures, and API responses.
- Base64 Encode/Decode Encode identifiers or payloads in tests.
- URL Encoder/Decoder Encode UUIDs for use in query strings or redirects.
How it works
Generate UUID v4 identifiers instantly in your browser for APIs, databases, distributed systems and testing. No data is sent to external servers.
Practical examples
Create identifiers for APIs and distributed systems
UUIDs are ideal for identifying resources, requests, or events with a very low collision risk.
Generate data for testing and development
You can quickly create UUID lists to use in fixtures, automated tests, or simulations.
FAQ
What is a UUID?
A UUID is a unique identifier commonly used in databases, APIs, distributed systems, and software testing.
Are UUIDs generated on a server?
No. UUIDs are generated locally in your browser and are not sent to external servers.
Which version does this tool generate?
This tool generates UUID v4 values, based on random numbers.
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