UUID Generator
Generate universally unique identifiers (UUIDs) for databases, APIs, testing, and development. Click to copy any UUID instantly.
Single UUID
Click to copy
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Bulk Generator
Generate up to 1000 UUIDs at once
What is a UUID?
AUUID (Universally Unique Identifier) is a 128-bit number used to uniquely identify information. The probability of generating duplicate UUIDs is negligibly small.
UUID Format
Standard UUID format:xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx
- Version 4: Random UUIDs (used by this generator)
- 128 bits: 32 hexadecimal digits (0-9, a-f)
- 5 groups: Separated by hyphens (8-4-4-4-12)
Common uses
- Database primary keys: Unique IDs for records
- API request tracking: Trace requests across systems
- Session IDs: Identify user sessions
- File naming: Ensure unique filenames
- Testing: Generate test data
Security note
UUIDs are generated using the browser'scrypto.randomUUID()
API, which uses a cryptographically secure random number generator. UUIDs are not secret tokens and should not be used for authentication or security purposes alone.
Example UUID
550e8400-e29b-41d4-a716-446655440000