UUID
UUID Generator
Generate a UUID v4 by default, switch to UUID v7 when you need time-ordered identifiers, and format the result without uploading anything.
Runs locally in your browser. Your input is not uploaded.
How this tool works
UUIDs are 128-bit identifiers commonly used for database records, API resources, files, and distributed systems.
This general generator lets you choose between random UUID v4 values and time-ordered UUID v7 values, then adjust casing and hyphen formatting.
Examples
- Generate a lowercase UUID v4 for a test record.
- Create a UUID v7 for an event stream where approximate creation order matters.
Common use cases
Database primary keys
API object identifiers
Mock data and local testing
FAQ
Which UUID version should I choose?
Use UUID v4 for general random identifiers and UUID v7 when sorted creation time is useful for databases or logs.
Does this generator send UUIDs to a server?
No. Generation and formatting run locally in your browser.