How to use this tool
- Choose how many UUIDs to generate.
- Optionally uppercase the output or remove hyphens for systems that require that format.
- Copy the generated identifiers into test data, database rows, logs, or prototypes.
What you can use UUID Generator for
Generate one or many random UUID v4 identifiers for databases, test data, logs, prototypes, and development workflows.
- Creating identifiers for mock database rows
- Generating request IDs or correlation ID examples
- Making test data for prototypes and demos
- Producing unique-looking sample values for documentation
Example workflows
| Database test row | Generate one UUID for a sample primary key. |
|---|---|
| Bulk mock data | Generate 20 UUIDs and paste them into seed data. |
| Hyphen-free format | Remove hyphens when an integration expects 32 hex characters. |
Privacy and accuracy notes
This tool is built for fast everyday work in a browser. Review results before using them in production systems, financial decisions, legal documents, or other high-stakes workflows.
- The tool uses crypto.randomUUID when available, with a cryptographic fallback in modern browsers.
- UUIDs are designed to be unique enough for practical use, but they are not meaningful or sequential.
- Do not use UUIDs as secrets or passwords.
Best practices for dependable results
Use clean input, review error messages, test important outputs in the destination app, and keep original files or text when the work matters. DailyWebTools keeps each tool page focused on one clear job so the result is easier to understand, repeat, and compare with related utilities.
FAQ
What version of UUID does this generate?
It generates random UUID v4 values.
Can I generate multiple UUIDs at once?
Yes. Choose a count up to 100 and generate them as separate lines.
Are UUIDs passwords?
No. UUIDs are identifiers, not secrets, passwords, or access tokens.
Does this require a server?
No. UUIDs are generated in your browser.
Recommended guides
Use these related guides when the task needs examples, comparisons, platform checks, or a safer step-by-step workflow.