UUID Generator

About this tool

A UUID is a highly unique identifier used for database IDs, API identifiers, log tracking IDs, test data, and more. This tool can generate random UUID v4 values.

• You can use this whether you want to copy just one label right away or create multiple labels at once.
• You can choose between uppercase or hyphen-free formats to match your client’s specifications.
• On supported browsers, it is generated in-browser using the Web Crypto API.

How to use the UUID generator

Simply select the number of UUIDs to generate and the display format, then click the "Generate" button to create them. The first one is displayed prominently, and if you generate multiple UUIDs, you can copy or download them as a list.

1. Enter the number of UUIDs you want to generate.
2. Select "Capitalize" or "Remove hyphens" as needed.
3. Click the "Generate" button to copy or save as a text file.

Important notes when using

• A UUID v4 is an identifier based on a random value and is used on the assumption that the likelihood of a collision is extremely low.
• A UUID is an identifier; it is not a password or a secret token itself. Do not use it alone as authentication credentials.
• Removing the hyphen only changes the display format; it does not alter the meaning of the UUID v4.

Frequently Asked Questions

What is a UUID?

A UUID is a 128-bit identifier, typically represented as a 32-digit hexadecimal string separated by hyphens. It is often used when you want to identify data without relying on sequential numbering.

Will the generated UUID be saved?

No. UUID generation takes place in the browser, and the generated result is not submitted via a form during normal operations on this page.

Can UUIDs be duplicated?

The probability of duplicate UUID v4 values is extremely low, but it is not mathematically zero. For general application identifier purposes, it is considered sufficiently low for practical use.