Generators
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How to Use the UUID Generator
Generate random universally unique identifiers (UUID v4) for databases, APIs, and keys.
- Choose how many UUIDs to generate.
- Click generate.
- Copy the UUIDs for use in your application.
UUID v4 Format
Structure
122 random bits; version 4 and variant bits are fixed.
Example:
Input: v4
Calculation: random hex
Result: e.g. 3f2504e0-4f89-41d3-9a0c-0305e82c3301
Real-World Use Cases
Database Keys
Use UUIDs as primary keys that don't collide across systems.
API Tokens
Generate unique request or session identifiers.
Tips
Tips
- UUID v4 collisions are astronomically unlikely.
- For ordered keys, consider UUID v7 or ULIDs instead.