Online UUID Generator Tool
What is a UUID?
A UUID (Universally Unique Identifier) is a 128-bit number used to uniquely identify information in computer systems. UUIDs are standardized by the Open Software Foundation (OSF) as part of the Distributed Computing Environment (DCE).
UUID Versions
- Version 1 (v1): Generated using timestamp and MAC address (time-based)
- Version 4 (v4): Generated using random or pseudo-random numbers
Common Uses of UUIDs
- Database keys and primary identifiers
- Session identifiers in web applications
- Tracking unique items in distributed systems
- Generating unique filenames
- Message queue identifiers
How This UUID Generator Works
Our free online UUID generator tool creates version 1 and version 4 UUIDs that conform to RFC 4122 specifications. Simply click the buttons above to generate:
- Version 4 UUIDs: Completely random UUIDs with extremely low collision probability
- Version 1 UUIDs: Time-based UUIDs that include timestamp information
- Multiple UUIDs: Generate several UUIDs at once for bulk operations
Why Use Our UUID Generator?
This tool provides a simple, reliable way to generate UUIDs without any software installation. It's perfect for developers, testers, and anyone needing unique identifiers for their projects. The generated UUIDs are:
- 100% RFC 4122 compliant
- Completely free to use with no limitations
- Generated locally in your browser (no server processing)
- Available for immediate copy-paste into your applications
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