UUID / GUID Generator
Generate secure, unique identifiers for your projects and applications.
Deterministic: v3 and v5 UUIDs are generated from the namespace and name. The same inputs will always produce the same UUID. If you need unique random IDs, use Version 4.
Understanding UUID and GUID
A Universally Unique Identifier (UUID) is a 128-bit number used to identify information in computer systems. Microsoft's implementation is known as a Globally Unique Identifier (GUID). These are designed to be unique across time and space.
Version 4
Completely random and the most commonly used version for most applications today.
Version 1, 6, 7
Time-based versions. v7 is the modern standard for database-friendly sortable identifiers.
Version 3, 5
Deterministic UUIDs generated from a namespace and a name using MD5 or SHA-1.
Secure
Uses cryptographically strong random number generators for maximum collision resistance.
Features of our UUID Generator
- Bulk Generation: Generate up to 5000 UUIDs at once for large-scale database seeding.
- Full Version Support: Support for v1, v3, v4, v5, v6, and v7 (RFC 9562).
- Name-based UUIDs: Easily generate v3/v5 UUIDs using DNS, URL, OID, or custom namespaces.
- Multiple Formats: Export your results as TXT or JSON files instantly.
- Custom Formatting: Choose between uppercase/lowercase, and toggle hyphens or braces.
- Privacy: All generation happens in your browser. No data is sent to our servers.