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🧷 UUID Generator
Generate v4 UUIDs instantly for free. Unique, random identifiers for software projects, databases, and development.
UUID Generator
Generate universally unique identifiers (UUID v4). Useful for developers needing IDs for databases, sessions, or references. Supports batch generation, copy, and download.
f4106c1c-af41-4f23-ab0c-1a6bd44db5e7How to use this tool
- Generate one or more UUIDs using the buttons above.
- Copy individual IDs for immediate use or download the list for batch workflows.
- Reset when you're done to avoid reusing identifiers accidentally.
Best practices
- Store UUIDs as strings in databases and index them if queried frequently.
- Avoid exposing predictable IDs—UUID v4 is random and safe for public references.
- Trim lists to the most recent 20 to keep the interface manageable, as this tool does automatically.
Where to use
- Assign identifiers to fixtures in automated tests.
- Generate invitation or activation codes that don't reveal user counts.
- Create sample data for API documentation and demos.
FAQ
- What UUID version is this?
- This generator uses UUID v4, which relies on random numbers. It's widely supported and collision-resistant for most applications.
- Can I generate deterministic UUIDs?
- Not here. Use UUID v5 or custom hashing in your codebase when you need repeatable values.
- How many UUIDs can I generate at once?
- The UI batches five at a time to stay readable, but you can repeat the action as often as needed and download the complete list.
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