Developer Tool

Generate UUIDs and GUIDs instantly

Create Version 1, Version 4, Version 7, and Nil/Empty UUID values for development, database IDs, testing, and API work — all offline, in your browser.

Version 1 UUID

Version 4 UUID

Version 7 UUID

GUID

{00000000-0000-0000-0000-000000000000}

Nil / Empty UUID

00000000-0000-0000-0000-000000000000

Tip: use Version 4 for random IDs, Version 1 for time-based identifiers, and Version 7 for modern ordered UUIDs.

Version 1 Time-based and useful for historical ordering.

Version 4 Random UUIDs ideal for secure and temporary identifiers.

Version 7 Modern, time-ordered UUIDs that work well for databases.

GUID Microsoft-style formatting for compatibility with Windows tools.

What is this tool?

Use this UUID generator to create Version 1, Version 4, Version 7, Nil/Empty UUIDs, and GUID values instantly for development, testing, APIs, and database work.

How to use

Open the tool, pick a UUID type, and click Generate or Copy to get your result instantly.

Why it helps

It helps developers and testers create unique identifiers quickly without installing anything or leaving the browser.

Which UUID version should I use?

Version 4 is best for general randomness, while Version 1 and Version 7 are better for ordered or time-focused identifiers.

Is this tool safe for offline use?

Yes. All generation happens locally in your browser, so your data stays on your device.