UUID Generator
Choose a quantity and formatting options, then generate cryptographically random UUIDs instantly — free, private, and processed entirely in your browser.
About the UUID Generator
A UUID (Universally Unique Identifier), also known as a GUID (Globally Unique Identifier), is a 128-bit value used to uniquely identify records, sessions, or objects without needing a central authority to hand out IDs. Our free online UUID generator creates Version 4 UUIDs — the most common variant, built from cryptographically secure random values — ready to paste into your database, API, or codebase.
Every UUID is generated locally in your browser using the native crypto.randomUUID() API. Nothing is ever logged or sent to a server, so the IDs you generate stay completely private.
How to Generate UUIDs
Step 1
Choose your quantity
Select how many UUIDs you need, from 1 up to 50 at once.
Step 2
Choose formatting options
Toggle uppercase, curly braces, and hyphens to match the format you need.
Step 3
Generate and copy
Click "Generate UUIDs", then copy an individual ID or all of them at once.
Frequently Asked Questions
Are these UUIDs safe to use in databases?
Yes. We generate standard RFC 4122 Version 4 UUIDs using the browser's cryptographically secure random number generator (crypto.randomUUID()), the same standard used by most databases and backend frameworks.
Does the generator track my IDs?
No. All UUID generation happens locally inside your browser — no data is ever logged or sent to any server.
What is a UUID / GUID?
A UUID (Universally Unique Identifier), also called a GUID (Globally Unique Identifier), is a 128-bit value used to uniquely identify information without a central coordinating authority. Version 4 UUIDs are generated from cryptographically secure random values, making collisions astronomically unlikely.
Does it cost money?
No. The UUID generator is 100% free to use, with no registration or account required.