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UUID Generator
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How to Use the UUID Generator
- Choose how many UUIDs you need (1-50)
- Select your preferred format
- Click "Generate UUIDs" to create new unique identifiers
- Click the copy button to copy to your clipboard
When to Use UUIDs
- Database Keys - Use as primary keys without coordination between servers
- API Identifiers - Create unique resource IDs for REST APIs
- Session Tokens - Generate secure session identifiers
- File Naming - Create unique filenames to avoid collisions
- Distributed Systems - Generate IDs without a central authority
- Testing - Create unique test data identifiers
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Frequently Asked Questions
What is a UUID?
UUID (Universally Unique Identifier) is a 128-bit identifier that is unique across all devices and time. Also known as GUID (Globally Unique Identifier).
Are these UUIDs truly unique?
Yes, UUID v4 uses random values with 122 random bits, making collisions virtually impossible (about 1 in 5.3 x 10^36).
What's the difference between UUID versions?
UUID v1 is time-based, v4 is random (most common), and v5 is namespace-based. We generate v4 UUIDs which are the most widely used.
Can I use these UUIDs in my database?
Absolutely! These UUIDs are perfect for database primary keys, API identifiers, session tokens, and more.