UUID & Random ID Generator
Generate unique identifiers instantly. Create UUIDs, random IDs, and secure tokens for your applications.
Generated IDs
About UUIDs
UUID v4: Randomly generated, most commonly used. 36 characters with hyphens.
UUID v1: Time-based with MAC address. Includes timestamp information.
UUID v3/v5: Name-based using MD5/SHA-1 hash. Deterministic results.
Format: 8-4-4-4-12 characters (xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx)
Common Use Cases
- Database primary keys
- Session identifiers
- API keys and tokens
- File naming
- Unique resource identifiers
Frequently Asked Questions
What is a UUID?
A UUID (Universally Unique Identifier) is a 128-bit number used to uniquely identify information in computer systems. UUIDs are designed to be unique across space and time, making them ideal for database keys, session IDs, and other unique identifiers.
What are the different UUID versions?
UUID v1 uses timestamp and MAC address, v3 uses MD5 hashing of a name and namespace, v4 is randomly generated (most common), and v5 uses SHA-1 hashing. Each version has different use cases and properties.
Is this generator secure?
Yes! Our UUID generator uses cryptographically secure random number generation for v4 UUIDs and proper hashing algorithms for v3/v5 UUIDs. All generation happens client-side in your browser for maximum privacy and security.
Can I generate multiple UUIDs at once?
Absolutely! You can generate up to 50 UUIDs or random IDs in a single request. This is perfect for bulk operations like populating databases or creating multiple API keys.