UUID Generator
Generate unique identifiers (UUIDs) in various formats including v1, v4, and v5.
How to Use UUID Generator
Generating UUIDs is instant. Click Generate to create a single UUID v4, or set a count to generate up to 1,000 at once. Choose your preferred output format: standard with hyphens, no hyphens, uppercase, or URN format. Each UUID is cryptographically random and RFC 4122 compliant. Click any UUID to copy it, or use Copy All for bulk results. The tool is perfect for generating unique IDs for databases, API keys, session tokens, and test data. No signup required, and all generation happens in your browser.
Frequently Asked Questions
What is a UUID?
UUID (Universally Unique Identifier) is a 128-bit identifier standard defined in RFC 4122, used to uniquely identify information without central coordination.
What version of UUID does this generate?
The tool generates Version 4 UUIDs, which use random numbers. It's the most common version used in web development and databases.
How unique are UUIDs?
V4 UUIDs have 122 random bits, giving approximately 5.3×10³⁶ possible values. The chance of collision is astronomically small.
Can I generate multiple UUIDs at once?
Yes, set the count (up to 1000) and click Generate. Bulk UUIDs are available for database seeding and testing.
What formats are available?
Standard format with hyphens (8-4-4-4-4), no hyphens, uppercase, and URN format. Copy in your preferred format.
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