GUID Generator

How to Generate GUIDs

1. Click Generate to create cryptographically random GUIDs instantly.
2. Generate in bulk — make as many as your project needs in one go.
3. Copy with one click — each GUID has its own copy button.

What Exactly Is a GUID?

A GUID (Globally Unique Identifier), also called a UUID, is a 128-bit value written as 32 hexadecimal digits in five groups: 8-4-4-4-12, like 550e8400-e29b-41d4-a716-446655440000. Version 4 GUIDs are random, making collisions so unlikely you can treat them as unique forever.

Where Developers Use Them

• Database primary keys — unique IDs that work across distributed systems without coordination.
• Session & API tokens — unguessable identifiers for auth flows.
• File & resource naming — avoid filename collisions in uploads.
• Test fixtures — stable unique IDs for automated tests.

Frequently Asked Questions

GUID vs UUID — what’s the difference?

They’re the same thing. Microsoft says GUID; the RFC standard says UUID.

Are they really unique?

Version 4 GUIDs have 122 random bits — you’d need to generate billions per second for centuries to expect one collision.

Is it free for commercial use?

Yes — generated GUIDs are yours, no restrictions.