GUID / UUID Generator
Online UUID Generator: Create Unique Identifiers
Online UUID generator is your go-to tool to quickly create UUID v4 strings, suitable for use in software development, databases, and APIs.
What is a UUID?
UUID stands for Universally Unique Identifier. It’s a 128-bit number used to uniquely identify information in computer systems. The most common variant is UUID v4, which is randomly generated and extremely unlikely to collide.
Why Use an Online UUID Generator?
- Convenience: No need to install any tools or libraries.
- Cross-language support: See how to generate UUIDs in JavaScript, Python, SQL, and more.
- Free and secure: 100% free with no usage tracking or limits.
- Instant generation: Copy and paste with one click.
Generate UUIDs in Different Languages
1. JavaScript (UUID NPM)
npm install uuid
import { v4 as uuidv4 } from 'uuid';
const uuid = uuidv4();
console.log(uuid);2. Node.js
const { v4: uuidv4 } = require('uuid');
console.log(uuidv4());3. Python
import uuid
print(uuid.uuid4())4. Java
import java.util.UUID;
public class UUIDExample {
public static void main(String[] args) {
UUID uuid = UUID.randomUUID();
System.out.println(uuid.toString());
}
}5. PostgreSQL
SELECT uuid_generate_v4();6. C# (.NET)
Guid guid = Guid.NewGuid();
Console.WriteLine(guid);Features of Our UUID Generator
- Generates UUID v4 (random-based)
- Copy UUIDs with one click
- Works on all devices and browsers
- Lightweight and fast performance
- Zero tracking or data collection
When to Use a UUID
UUIDs are perfect for:
- Primary keys in databases
- Unique session tokens
- API keys and identifiers
- Distributed systems
Popular Use Cases and Variants
- uuid v4 generator: Standard for random UUIDs
- uuid npm: Common library in JS/Node
- uuid in PostgreSQL: Used for unique DB entries
- uuid in Python: Built-in support via
uuidmodule - uuid online generator: Great for testing, prototyping, or quick access
Try It Yourself
Use our Online UUID Generator now to create your next globally unique ID in just one click!
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Frequently Asked Questions
A GUID generator is a tool that creates Globally Unique Identifiers (GUIDs) on demand. It ensures that each generated identifier is unique across space and time.
You can create a new GUID using an online GUID generator or programming languages like Python, C#, or Java. For example, in Python:
python
import uuid
print(uuid.uuid4())
GUIDs are used to uniquely identify resources in databases, APIs, distributed systems, and testing environments.
गाईड जनरेटर म्हणजे एक साधन जे जागतिक स्तरावर अद्वितीय ओळखकर्ते (GUIDs) तयार करते. हे सुनिश्चित करते की प्रत्येक ओळखकर्ता अद्वितीय आहे.
A GUID is a 128-bit identifier, typically represented as a 32-character hexadecimal string.
You can find your GUID in databases, APIs, or using programming languages like Python or C#.
A user GUID can be found in user databases or authentication systems. Use SQL queries or API calls to retrieve it.
In SQL, use the `NEWID()` function to generate a GUID:
sql
SELECT NEWID();
Yes, a GUID is a type of unique identifier. However, it is guaranteed to be globally unique, unlike a regular ID.
A valid GUID example is: `550e8400-e29b-41d4-a716-446655440000`.
An app GUID can be found in the app’s configuration files or using registry entries on Windows.
A GUID is a 32-character hexadecimal string, typically grouped with hyphens into 8-4-4-4-12 segments.