UUID Generator — Generate RFC-Compliant UUID v4 Online

Q: Is the UUID generator free?

Yes, ToolifyX UUID generator is completely free to use. No registration, no credit card, and no hidden fees.

UUID v4 Generator

Generate random unique identifiers

xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx

Quantity (1 to 100)

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UUID Generator — Generate RFC-Compliant UUID v4 Online Free

What is a UUID?

A UUID (Universally Unique Identifier) is a 128-bit number used to uniquely identify information in computer systems. UUID v4 is the most common version, generated from random numbers following the RFC 4122 specification. They are used in databases, APIs, distributed systems, and more.

How to Use

Set the quantity — choose how many UUIDs to generate (1 to 100)
Click Generate UUIDs to create unique identifiers
Use Copy to copy the first UUID to your clipboard
Use Download to save all generated UUIDs as a text file

UUID Format

Each UUID is formatted as 32 hexadecimal digits displayed in 5 groups separated by hyphens: xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx. The '4' indicates the version (v4), and 'y' is a variant digit.

Why Choose ToolifyX?

Our UUID generator runs entirely in your browser using a cryptographically secure random number generator. No data is sent to any server, cloud, or third party. Your identifiers are generated locally and remain private.

Frequently Asked Questions

Is the UUID generator free?

Yes, completely free. No signup, no credit card, no hidden fees.

What is UUID v4?

UUID v4 is a universally unique identifier generated from random numbers. It follows RFC 4122 specification and is the most common UUID version.

Are generated UUIDs truly unique?

Yes. The probability of collision is extremely low — effectively zero for practical purposes. With 122 bits of randomness, you can generate billions of UUIDs without risk of duplication.

Are my UUIDs stored or shared?

No. All generation happens locally in your browser. UUIDs are never stored, transmitted, or logged by ToolifyX.