UUID Generator
Generate unique identifiers
Tool Guide
Introduction to the Online Random UUID Generator
The online random UUID generator can quickly generate UUIDs (Universally Unique Identifiers) in bulk. It uses a JS random-number algorithm, and each generated UUID is unique.
However, it cannot guarantee that repeated generation will never produce a duplicate, even though the probability of a duplicate is extremely, extremely small. UUIDs are used for data identifiers, database primary keys, encryption, and similar scenarios. Once generated, you can export them to TXT or Excel with one click for easy saving and use.
How to Use the Online Random UUID Generator
Step 1: Select the number of UUIDs to generate (bulk generation 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 there's no guarantee of no duplicates across generations, although the probability of a duplicate is extremely low.
About UUID/GUID
GUID is the abbreviation for Globally Unique Identifier. A UUID is a numeric identifier generated by an algorithm with a binary length of 128 bits.
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. Under ideal conditions, 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 extremely low probability—though this hardly affects practical use.
What scenarios are UUIDs suitable for?
They're suitable for database primary keys, distributed system identifiers, encryption verification, device IDs, and many other scenarios.
Does this tool support bulk generation?
Yes, it supports bulk-generating UUIDs and can export them to a TXT or Excel file for easy saving and use.
Do the generated UUIDs comply with the standard?
Yes. The UUIDs generated by this tool conform to the standard format and can be used for all kinds of applications and development needs.