Free UUID Generator (v4)
Generate cryptographically random UUID v4 identifiers. Perfect for databases, API keys, session IDs, and any unique identifier needs.
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How to Use the UUID Generator
- Select the number of UUIDs you need (1 to 100).
- Choose your preferred format (standard, no hyphens, or uppercase).
- Click "Generate" and copy the results to use in your code or database.
Frequently Asked Questions
UUID v4 is commonly used for database primary keys, API identifiers, session tokens, transaction IDs, and any scenario requiring unique identifiers across distributed systems.
Yes. The generator uses the browser's crypto.randomUUID() or crypto.getRandomValues() API which provides cryptographically strong random values.
The probability of a collision is extremely low — about 1 in 5.3 octillion (5.3 × 10^36). For practical purposes, UUID v4 collisions never happen.