Generator tool
UUID Generator
Generate secure UUID v4 values instantly, customize their format, copy individual results, or download the full list.
Generated UUIDs
0 generated · 0 characters
How UUID generation works
UUIDs are 128-bit identifiers commonly used for database records, API resources, sessions, files, and distributed systems.
This tool creates version 4 UUIDs with the browser's secure random UUID generator. Formatting options only change how the identifier is displayed.
Common uses
Database records
Create IDs for users, orders, files, and sessions.
API development
Generate test IDs and example resource identifiers.
Software testing
Produce unique values for fixtures and mock data.
Distributed systems
Create IDs without a central sequence generator.
Frequently Asked Questions
What UUID version is generated?+
UUID version 4.
How many can I generate?+
Between 1 and 100 UUIDs per batch.
Does removing hyphens change the UUID?+
It changes only the text representation.
Are UUIDs stored?+
No. Generation happens locally in your browser.