UUID Generator
Generate random UUID v4 values online and copy them in the format you need.
Concept
UUIDs are low-collision identifiers, not secret credentials
Use UUID generator for testing data IDs, DB record keys, tracking IDs, and temporary identifiers that need uniqueness.
A UUID is typically used as a unique marker for items, and the random generation flow is designed to keep collision probability low.
It is not meant to replace secrets: use it for non-sensitive IDs such as sample data, request tracing, and temporary records.
Where it fits
Generate IDs for tests, debug fixtures, synthetic rows, and temporary references across environments.
DB and tracing
Use UUIDs to label rows or events when you need unique keys that are easy to copy into logs, fixtures, and test payloads.
Security boundary
Do not use UUIDs as passwords, API keys, or security tokens; keep them for identification scenarios only.
Choose dedicated secret/token workflows for authentication or sensitive secrets; keep UUIDs for identity labeling and traceability.
UUID Generator UUID generation workspace
How to use
- 1 Enter how many UUIDs you want to generate.
- 2 Choose whether to include hyphens and uppercase the output.
- 3 Click generate to create the UUID list.
- 4 Copy the UUIDs and paste them where needed.
Common use cases
- Generate random UUID v4 values
- Create multiple UUIDs for tests
- Prepare hyphenless UUID identifiers
- Format UUIDs in uppercase
Frequently asked questions
What UUID formats can I generate?
Enter a count and choose whether to keep hyphens or convert the output to uppercase. Multiple UUID v4 values are generated one per line.
Can I copy or clear the generated UUIDs?
Yes. Use the copy button to send the UUID list to your clipboard, or the clear button to empty the output area.
Are the UUIDs cryptographically secure?
In supported browsers the tool uses crypto.randomUUID(). If that API is unavailable, it falls back to random-number logic, so check your runtime for security-sensitive use.