GUID Generator
Generate one or many GUIDs — globally unique identifiers — instantly in your browser. Each is a random RFC 4122 version-4 value, ready to copy.
How to generate GUIDs
- Choose how many GUIDs to generate.
- Generate — each is a random v4 GUID.
- Copy them to your clipboard.
About GUIDs
A GUID (globally unique identifier) is Microsoft’s name for a UUID — a 128-bit value written as 32 hexadecimal digits in five groups (8-4-4-4-12). Version-4 GUIDs are randomly generated, so the chance of two ever colliding is vanishingly small, which makes them ideal as database keys, request IDs and .NET / SQL Server identifiers.
These GUIDs are produced with the browser’s crypto.randomUUID, a cryptographically secure generator, entirely on your device — nothing is sent anywhere. GUID and UUID are the same format; .NET and SQL Server typically use the value as-is.
Frequently asked questions
What is the difference between a GUID and a UUID?
None, technically — GUID is Microsoft’s term and UUID is the standards term for the same 128-bit identifier. This tool generates RFC 4122 version-4 values either way.
Are the GUIDs unique?
Effectively yes. Version-4 GUIDs are random 122-bit values, so a collision is astronomically unlikely even across billions of them.
Are they uploaded or logged?
No. They are generated in your browser with a secure random generator and never leave your device.
Can I generate GUIDs in bulk?
Yes — set the count and generate as many as you need at once, then copy them all.