UUID Generator: Create Secure Version 4 UUIDs Online
By ToolZoneX Team
•
June 2026
UUIDs (Universally Unique Identifiers) are 128-bit identifiers guaranteed to be unique across space and time. Version 4 UUIDs are randomly generated using cryptographic randomness, making them ideal for database primary keys and distributed systems.
How to Use UUID Generator
1.
Click Generate to create a new UUID2.
Set quantity for bulk generation3.
Choose format (standard, no dashes, uppercase)4.
Copy individual or all UUIDs
Key Features
- Cryptographically secure v4 UUIDs
- Bulk generation (up to 1000 at once)
- Multiple formats (with/without dashes, uppercase)
- One-click copy and download as text
When to Use This Tool
•
Database primary keys•
API request IDs for tracing•
Session tokens•
File naming for uniqueness•
Distributed system identifiers
Frequently Asked Questions
Theoretically possible but practically impossible. The probability of collision after generating 1 billion UUIDs per second for 85 years is still only 50%.
They're the same thing. UUID is the standard term; GUID (Globally Unique Identifier) is Microsoft's name for it.
Ready to get started?
Open UUID GeneratorRelated Tools
UUID Generator
Use UUID Generator now