UUID Generator

Free online UUID generator. Generate UUID v4, v1, GUID, and custom UUIDs. Perfect for developers, database designers, and anyone who needs unique identifiers.

UUID Generator

UUID Validator

Features

Multiple UUID versions
Bulk generation
UUID validation
Multiple formats
Copy to clipboard
Mobile responsive

How to Use UUID Generator

Step-by-Step Guide

  1. 1Choose the UUID version (v4, v1, v3, v5)
  2. 2Select the number of UUIDs to generate
  3. 3Choose output format (standard, uppercase, lowercase)
  4. 4Click generate and copy the UUIDs

UUID Versions

๐ŸŽฒUUID v4: Random generation (most common)
โฐUUID v1: Time-based with MAC address
๐Ÿ”UUID v3/v5: Namespace-based (deterministic)
๐Ÿ“‹GUID: Microsoft's implementation of UUID

Common Use Cases for UUID Generator

๐Ÿ’พ

Database Design

Generate primary keys and unique identifiers for database tables.

๐ŸŒ

API Development

Create unique resource identifiers for REST APIs and microservices.

๐Ÿ”ง

System Configuration

Generate unique IDs for system components and configurations.

๐Ÿงช

Testing & QA

Create test data with unique identifiers for automated testing.

๐Ÿ“ฑ

Mobile Development

Generate device IDs and session tokens for mobile applications.

๐Ÿ”’

Security & Authentication

Create secure tokens and session identifiers for authentication.

Frequently Asked Questions

What is a UUID?

A UUID (Universally Unique Identifier) is a 128-bit identifier that is unique across space and time. It's commonly used in software development to generate unique identifiers for resources, objects, and data.

What's the difference between UUID v4 and v1?

UUID v4 is randomly generated and provides the highest level of uniqueness. UUID v1 is time-based and includes the MAC address, making it deterministic but potentially less secure.

Are UUIDs really unique?

While technically possible, the probability of generating duplicate UUIDs is extremely low. UUID v4 has 2^122 possible combinations, making collisions virtually impossible in practice.

What's the difference between UUID and GUID?

GUID (Globally Unique Identifier) is Microsoft's implementation of UUID. They follow the same standard but may have slight formatting differences in some contexts.

Can I validate existing UUIDs?

Yes! Our UUID generator includes a validation feature that can check if a given string is a valid UUID format and determine its version.

How many UUIDs can I generate at once?

You can generate up to 1000 UUIDs at once for bulk operations. This is useful for testing, data migration, or batch processing scenarios.

Why Choose Our UUID Generator?

โœ“

Multiple UUID Versions

Support for v1, v3, v4, v5, and GUID formats.

โœ“

Bulk Generation

Generate up to 1000 UUIDs at once.

โœ“

UUID Validation

Validate existing UUIDs and check their format.

โœ“

100% Free

No registration, no hidden costs.

โœ“

Privacy First

All processing happens locally.

โœ“

Mobile Friendly

Works perfectly on all devices.