UUID Generator
LOCAL · Browser-OnlyGenerate and validate UUIDs (v3, v4, v5, and v7) for your applications
v4 UUIDs are fully random - suitable for most use cases where uniqueness matters.
Namespace UUID (v3 / v5)
Deterministic UUIDs derived from a namespace and a name. The same namespace and name always produce the same UUID.
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What is UUID Generator?
Free online UUID generator to generate cryptographically random UUID v4 (Universally Unique Identifier) strings for use in databases, APIs, and applications.
Generate a single GUID or generate multiple UUIDs at once in bulk, with options for uppercase formatting and a no-dashes format for filenames and URLs. UUIDs are 128-bit identifiers that are practically guaranteed to be unique across all systems, making them ideal for database primary keys, session tokens, mock test data, and distributed systems. No signup required.
How to Use UUID Generator
- 1Set how many UUIDs you want to generate (1 to 50)
- 2Choose options: uppercase formatting and/or remove dashes
- 3Click 'Generate' to create your UUIDs
- 4Click 'Copy' next to any UUID to copy it, or 'Copy All' for the entire list
Frequently Asked Questions
What is a UUID?
What is the difference between UUID and GUID?
Can two UUIDs ever be the same?
Should I use UUIDs as database primary keys?
Can I generate UUIDs in bulk?
How do I get a UUID without dashes?
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Keep reading: working without uploading reference. Doing this in code instead? See the utility endpoints.