UUID Generator
Generate random UUIDs (v4) with one click.
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About UUID Generator
Generate version 4 UUIDs (universally unique identifiers) with one click. UUIDs are used as primary keys in databases, session tokens, correlation IDs, and anywhere you need a unique string without a central authority. Copy the result or generate several at once.
FAQ
- What is a UUID v4?
- A UUID v4 is a 128-bit identifier generated using random numbers. It looks like "550e8400-e29b-41d4-a716-446655440000" and is virtually guaranteed to be unique.
- Can two UUIDs ever be the same?
- Technically possible, but the probability is astronomically low — you'd need to generate billions per second for decades to expect a single collision.
- Are UUIDs secure enough for tokens?
- UUID v4s have 122 bits of randomness, which makes them impractical to guess. They're commonly used for session IDs and API keys.