The UUID Generator is a free online developer tool that creates random UUID v4 identifiers instantly.
UUID stands for Universally Unique Identifier, and it is commonly used in databases, APIs, authentication systems,
distributed applications, and software development projects where unique IDs are required.
To use the tool, choose how many UUIDs you want to generate, then select the UUID format you need. You can output standard lowercase UUIDs,
uppercase UUIDs, UUIDs without hyphens, UUIDs with braces, or URN-formatted UUIDs. You can also choose how the results should be displayed,
such as one per line, comma separated, or as a JSON array.
After clicking the Generate UUIDs button, the results appear instantly. You can then copy them in one click or download them
as a text file. This makes the tool useful for developers who need quick unique identifiers for testing, seeding databases, mock APIs, objects,
sessions, tokens, and application records.
Why Use This UUID Generator?
UUID v4 Generation: Generate random UUID version 4 identifiers instantly.
Multiple UUIDs: Create one UUID or hundreds at once.
Format Options: Choose lowercase, uppercase, no hyphens, braces, or URN format.
Output Styles: Get results one per line, comma separated, or as a JSON array.
Copy and Download: Copy generated UUIDs or download them in a text file.
Fast and Lightweight: Runs directly in your browser with no signup.
Useful for Developers: Great for databases, APIs, apps, and testing.
Completely Free: No login, no subscription, and easy to use.
Who Can Use This Tool?
This tool is useful for developers, students, testers, backend engineers,
API developers, and anyone working with unique identifiers. It is especially helpful for database rows, app objects, session IDs,
tokens, seeded test data, and distributed systems where unique references are important.
Example UUID
550e8400-e29b-41d4-a716-446655440000
Frequently Asked Questions (FAQ)
A UUID, or Universally Unique Identifier, is a 128-bit value used in software systems to uniquely identify
objects, database records, sessions, and resources.
UUID version 4 is a randomly generated UUID format. It is popular in modern software because it is easy to generate
and has an extremely low chance of duplication.
Yes, this tool lets you generate multiple UUIDs instantly by choosing how many identifiers you want.
Yes, you can copy all generated UUIDs or download them as a text file in one click.
Yes, this tool is completely free and runs directly in your browser. No signup is required.