UUID Generator

Tool Guide

About the Online Random UUID Generator

The online random UUID generator can quickly batch-generate UUIDs (Universally Unique Identifiers). It uses a JS random number algorithm, and each generated UUID is unique.

However, it cannot guarantee that no duplicates will occur across multiple generations, even though the probability of duplication is extremely small. UUIDs are used for data identification, database primary keys, encryption, and other scenarios. After generation, you can export to TXT or Excel with one click, convenient for saving and use.

How to Use the Online Random UUID Generator

Step 1: Select the number of UUIDs to generate (batch generation is supported).

Step 2: Choose whether the generated UUIDs should be uppercase.

Step 3: Click "Generate UUID", and the system automatically creates a list of unique identifiers.

Step 4: The generated results support copying or one-click export to a TXT/Excel file.

You can generate UUIDs multiple times, but duplicates across generations cannot be guaranteed to be avoided, although the probability of duplication is extremely low.

Introduction to UUID/GUID

GUID is the abbreviation of Universally Unique Identifier. A UUID is a 128-bit binary number identifier generated by an algorithm.

The format of a UUID is "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx", where each x is a hexadecimal digit in the range 0-9 or a-f. Ideally, no computer or cluster of computers will generate two identical UUIDs.

The total number of UUIDs reaches 2^128 (3.4×10^38), so the possibility of randomly generating two identical UUIDs is extremely small, but not zero. The term GUID sometimes refers specifically to Microsoft's implementation of the UUID standard.

Frequently Asked Questions (FAQ)

Can UUIDs be duplicated?

In theory, UUIDs are unique, but due to the nature of random numbers, duplicates may occur with an extremely low probability, though this hardly affects actual use.

What scenarios are UUIDs suitable for?

They are suitable for database primary keys, distributed system identifiers, encryption verification, device IDs, and many other scenarios.

Does this tool support batch generation?

Yes, it supports batch UUID generation and can export to TXT or Excel files, convenient for saving and use.

Do the generated UUIDs conform to the standard?

Yes, the UUIDs generated by this tool conform to the standard format and can be used for various applications and development needs.