About the UUID Generator
Our tool generates Version 4 UUIDs. A UUID v4 is created using cryptographically secure random numbers provided by your web browser (crypto.randomUUID()). This provides high-quality randomness and makes predictable collisions extraordinarily unlikely.
How to Use
- Enter the quantity of UUIDs you want to generate (between 1 and 1000).
- Click the Generate UUID(s) button.
- Your generated unique identifiers will appear in a list below.
- Click Copy next to an individual UUID, or use Copy All or Download TXT for bulk results.
The UUID v4 Format
A standard UUID is represented as 32 hexadecimal characters, displayed in five groups separated by hyphens in the form 8-4-4-4-12.
Example: xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx
The 4 indicates the version, and the y indicates the variant (always 8, 9, a, or b).
Are UUIDs designed to be practically unique?
While theoretically possible to generate duplicates, the chance of a collision is extraordinarily unlikely. The UUID v4 space contains 2122 possible combinations. To put this in perspective, you would need to generate 1 billion UUIDs per second for 85 years to reach a 50% chance of a single collision.
Related Tools & Resources
- UUID Validator - Check if a string is a correctly formatted UUID.
- What is a UUID? - Read our comprehensive guide.
- UUID vs GUID - Understand the difference.