UUID Generator
Use this free UUID Generator to create UUID v4 values instantly for apps, databases, APIs, testing, backend systems, frontend projects, tokens, records, and development workflows. Generate one or many UUIDs, choose uppercase or lowercase format, remove hyphens if needed, copy results instantly, and download the full output for reuse.
Generated UUID output
Choose your options and click Generate UUID to create one or many UUID values instantly.
How to use
- Select how many UUIDs you want to generate.
- Choose letter case, hyphen mode, and optional prefix.
- Pick your preferred output format.
- Click Generate UUID to create and copy your identifiers instantly.
Example
Count: 3
Case: Lowercase
Format: One per line
Result: Three unique UUID v4 values are generated instantly for app or database use.
Recent history
Where can you use this UUID Generator?
Apps & APIs
Create unique identifiers for API payloads, records, sessions, tokens, and application workflows.
Databases & Records
Use UUIDs as unique keys for rows, objects, entries, orders, users, and distributed data systems.
Testing & Development
Generate quick sample identifiers for testing, mock data, staging systems, and developer utilities.
When to use this tool
When you need unique IDs
Generate instant UUIDs when building apps, APIs, databases, or tools that require unique identifiers.
When testing systems
Create sample IDs for development, QA checks, demos, staging data, and API request testing.
When creating bulk values
Generate multiple UUIDs at once for imports, lists, seeds, scripts, or repeated system operations.
Frequently Asked Questions
A UUID is a universally unique identifier used in software systems to create distinct IDs for records, objects, tokens, and other entities.
This tool generates UUID version 4 values, which are commonly used random-based UUIDs.
Yes. You can generate one or many UUID values in a single click.
Yes. You can generate UUIDs with or without standard hyphens.
Yes. You can generate UUIDs online for free.
About this free online UUID Generator
This UUID Generator helps you create UUID v4 values instantly for software development and testing workflows. It is useful for developers, testers, backend teams, frontend teams, API builders, database users, and anyone who needs unique identifiers quickly without relying on manual generation or scripts.
The tool supports batch generation, uppercase or lowercase formatting, optional hyphen removal, and prefix support. That makes it useful for app development, database keys, token generation, record IDs, request identifiers, and many other technical use cases.
Because it runs directly in the browser, it is quick and easy to use on desktop and mobile. Whether you need one UUID for a test request or hundreds for a bulk data task, this tool provides clean output instantly, with copy, download, and history support.
You may also find these related tools useful, including Random Number Generator, Random Name Picker, Slug Generator, Text Sorter, and Lorem Ipsum Generator. These tools help with development, testing, text workflows, and utility tasks.