Free UUID / GUID Generator 2026: Secure & Bulk Edition
The most advanced online UUID generator 2026 for high-performance applications. Generate Version 1, 4, and 7 identifiers instantly with RFC 4122 compliance. Designed for developers who prioritize security: all generation happens 100% client-side, meaning your unique IDs are never sent to any server. Perfect for database keys and professional software development globally.
UUID Generator
Why Use This Professional UUID Generator?
In modern software architecture, a Universally Unique Identifier (UUID) or Globally Unique Identifier (GUID) is crucial for database integrity. Our tool provides 100% RFC 4122 compliant identifiers. Whether you need v4 random IDs for session tokens or v7 time-ordered UUIDs for optimized database indexing, our generator ensures collision-free results.
- Zero Server Storage: Your generated UUIDs are never sent to a server. Everything happens in your browser.
- Bulk Generation: Generate up to 1000 UUIDs in a single click for testing or migration.
- Version Diversity: Full support for UUID v1 (Time-based), v4 (Random), and the new v7 (Time-Sorted).
How to Generate UUIDs Online?
Choose v4 for random IDs or v7 for database-friendly time-sorted keys.
Toggle hyphens, uppercase, or braces {} based on your coding environment.
Set your quantity (up to 1000) and click ‘Generate’.
Paste any UUID into our validator to check its version and creation time.
UUID Formats & Examples
| Type | Example Format |
|---|---|
| Standard (v4) | 550e8400-e29b-41d4-a716-446655440000 |
| Braced (Windows) | {f47ac10b-58cc-4372-a567-0e02b2c3d479} |
| URN Format | urn:uuid:6ba7b810-9dad-11d1-80b4-00c04fd430c8 |
Frequently Asked Questions
1. What is the difference between UUID v4 and v7?
v4 is completely random, whereas v7 is time-ordered. v7 is preferred for databases (SQL/NoSQL) as it improves indexing performance.
2. Is this GUID generator secure for production?
Yes. We use the crypto.getRandomValues() API, which is a cryptographically strong random number generator available in modern browsers.
3. Can two UUIDs be the same (Collision)?
The probability of a collision in UUID v4 is so low that it is practically impossible, even when generating billions of IDs.
4. Why use UUID instead of Auto-Increment ID?
UUIDs provide security through obscurity and are distributed-system friendly, as they don’t require a central authority to ensure uniqueness.
5. How do I validate a UUID?
Simply paste your ID into our UUID Inspector tool above. It will detect if it’s a valid string and show you the version type.