How to Generate a UUID / GUID
A UUID (also called a GUID) is a 128-bit identifier that is unique without a central authority — perfect for database keys, request IDs, and file names that must never collide. Kitolity generates them instantly in your browser.
The tool
UUID / GUID Generator
Step by step
- Open the UUID GeneratorGo to the UUID / GUID Generator in your browser.
- GenerateProduce one or more UUIDs instantly.
- CopyCopy the value(s) into your code, database, or config.
When should I use a UUID?
Use one when you need a unique identifier generated on many machines without coordinating — distributed systems, offline-first apps, idempotency keys, correlation IDs in logs, and primary keys where you don’t want sequential integers to leak record counts.
Are UUIDs really unique?
Version-4 UUIDs are random 128-bit values; the odds of a collision are astronomically small, so for practical purposes they’re unique. They are identifiers, not secrets — don’t rely on their unguessability for security.
Frequently asked questions
Can I generate several at once?
Yes — produce one or many UUIDs as needed.
Is it free?
Yes, completely free with no sign-up.
Does it run in my browser?
Yes — generation happens locally.