01
Select Version
Choose UUID v4 (fully random) or UUID v1 (linked to timestamp).
UUID Generator Online
Generate standard UUID v4 (random) and v1 (time-based) strings instantly. Configure formatting, batch quantities, and copy or download results.
Identity Codes
UUID Generator Online
Generated 5 UUIDs:
Format Output:
UUID Configurations
110203050
How to use
Use this tool in three simple steps
Our workflow is designed to be straightforward, allowing you to complete your task in seconds.
02
Adjust Settings
Select quantity, toggle casing (uppercase), and choose whether to strip hyphens.
03
Export & Copy
Click Copy All, Download TXT, or choose JSON output format for simple integration.
Fast results
Numbers update in real time, so iteration stays quick.
Focused UI
Clean hierarchy keeps actions and outputs easy to scan.
SEO ready
Structured sections improve readability and crawlability.
Scalable shell
New tools can reuse this layout without UI drift.
Use cases
Useful for different workflows
Database Keys
Assign UUID v4 values as primary keys in SQL or NoSQL.
Session Identifiers
Create unique transaction session strings.
Testing Mockups
Populate test columns with unique token strings.
Tool guide
What is a UUID / GUID?
A Universally Unique Identifier (UUID) is a 128-bit number represented as a 32-character hexadecimal string, broken down into five groups separated by hyphens (e.g., 8-4-4-4-12). In the Microsoft ecosystem, they are often referred to as GUIDs (Globally Unique Identifiers).
Difference Between UUID v1 and v4
UUID v1 is time-based. It combines a timestamp (representing 100-nanosecond intervals since October 15, 1582) and a MAC address (or a random identifier). This is useful when you want identifiers to remain chronologically sortable. UUID v4 is completely random, making it ideal for identifiers where privacy and randomness are preferred.
Common Developer Use Cases
UUIDs are highly valued in microservice architectures and distributed systems. Unlike autoincrementing integers, service nodes can generate UUIDs independently without waiting for a database transaction. This prevents timing attacks and database index leakage, as hackers cannot guess nearby keys.
FAQ
Frequently asked questions
What does UUID stand for?
UUID stands for Universally Unique Identifier. It is a 128-bit label used to uniquely identify information in computer systems without significant central coordination.
Are UUIDs generated here unique?
Yes. UUID Version 4 utilizes cryptographically secure random numbers. The probability of generating a duplicate UUID v4 is so infinitesimally small that it is considered virtually impossible in human history.
Can I use UUIDs generated here for database keys?
Absolutely. Developers frequently use UUIDs as primary keys in databases (like PostgreSQL, MySQL, or MongoDB) to distribute data across multiple nodes securely without key collisions.
Related tools
Keep exploring Toolzenpro
JSON Formatter Online
Format, beautify, and validate JSON data instantly. Supports minification and custom spacing.
Open ToolBase64 Decoder Online
Decode base64 encoded strings back to readable UTF-8 text, or encode plain text to base64.
Open ToolMD5 Hash Generator
Generate standard 128-bit MD5 hashes from any text input dynamically and securely in your browser.
Open ToolURL Encoder Decoder Online
Encode text strings into URL-friendly format, or decode percent-encoded URLs back to plain text.
Open ToolRegex Tester Online
Test your regular expressions in real-time. View matched strings, highlight groups, and test expression validity.
Open ToolHTML to Markdown Converter
Convert HTML markup into clean and readable Markdown syntax instantly. Drag & drop or paste tags.
Open Tool