UUID Generator
Generate random UUIDs (v4) for your applications. Copy with one click.
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About UUID v4
UUID v4 (Random) generates unique identifiers using random or pseudo-random numbers. This is the most commonly used UUID version.
xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx
- 4 - indicates version 4
- y - can be 8, 9, a, or b (variant)
- x - random hexadecimal digit
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Fun Facts
- Total possible UUIDs: 2122 (≈ 5.3×1036)
- Collision probability is astronomically low
- Used in databases, APIs, and distributed systems
- No central authority needed