How to Generate UUID Online Free Tool
Our free UUID generator tool allows you to create unique identifiers instantly in your browser. Generate UUID v1 (time-based) and v4 (random) with support for bulk generation, custom formatting, and multiple export options. Perfect for developers who need unique IDs for databases, APIs, and distributed systems.
UUID v1 and v4 Generator for Developers
This UUID generator supports both UUID v1 (time-based with MAC address) and UUID v4 (random) standards. Whether you need sequential identifiers for database records or completely random UUIDs for security purposes, our tool provides reliable unique identifier generation with detailed format explanations and use case recommendations.
Bulk UUID Generation Tool
Generate multiple UUIDs at once with our bulk generation feature. Create up to 1000 unique identifiers in various formats including uppercase, lowercase, with or without hyphens. Export your UUIDs as CSV, JSON, or plain text files for easy integration into your development workflow.
UUID Validation and Analysis
Validate existing UUIDs and analyze their structure to understand version, variant, and generation timestamp (for v1 UUIDs). Our tool helps you debug UUID-related issues, verify UUID compliance, and understand the characteristics of different UUID versions for optimal usage in your applications.
Frequently Asked Questions
What is a UUID?
UUID (Universally Unique Identifier) is a 128-bit identifier used to uniquely identify information in computer systems. UUIDs are designed to be unique across space and time without central coordination.
How to generate UUID online?
Simply select UUID v1 or v4, choose your preferred format, and click generate. For bulk generation, specify the quantity and export format. All UUIDs are generated instantly in your browser.
What's the difference between UUID v1 and v4?
UUID v1 includes timestamp and MAC address (predictable), while UUID v4 is completely random (unpredictable). Use v4 for security-sensitive applications and v1 when you need time-based ordering.
Is this UUID generator secure?
Yes! All UUID generation happens entirely in your browser using cryptographically secure random number generators. No data is sent to servers, ensuring complete privacy and security.
Can I generate multiple UUIDs at once?
Absolutely! Our bulk generation feature allows you to create up to 1000 UUIDs at once. You can export them in various formats (CSV, JSON, text) for easy integration into your projects.
Are UUIDs truly unique?
While mathematically possible, UUID collisions are extremely rare. UUID v4 has a collision probability of about 1 in 5.3 x 10^36, making them practically unique for all applications.