UUID Generator – Unique ID Creator
Generate random UUIDs (v4) and GUIDs instantly. Create unique identifiers for databases, APIs, and applications.
Our UUID Generator produces RFC 4122 compliant Universally Unique Identifiers (UUIDs) on demand. A UUID is a 128-bit identifier that is unique across space and time, commonly used for database primary keys, API tokens, distributed systems, and any scenario requiring collision-resistant identifiers.
Version 4 UUIDs are randomly generated using cryptographically secure methods, ensuring uniqueness without requiring a central authority or timestamp. Our tool generates UUIDs entirely in your browser—your data never leaves your device. Generate one or up to 100 UUIDs at once with a single click.
Features
- RFC 4122 compliant
- Version 4 random UUIDs
- Bulk generation (1-100)
- 100% client-side
- No registration
How to Use
Select how many UUIDs you need by clicking one of the preset buttons (1, 5, 10, 25, 50, or 100).
The tool generates UUIDs instantly. Each UUID follows the format xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx.
Copy a single UUID by clicking the copy icon next to it, or copy all generated UUIDs using the 'Copy All' button.
Use the UUIDs in your database schemas, API configurations, or distributed systems.
Frequently Asked Questions
What is a UUID v4?
UUID version 4 is a randomly generated 128-bit identifier. The '4' in the middle indicates random generation. It provides 2^122 possible unique values, making collisions virtually impossible.
Are the UUIDs cryptographically secure?
Yes. Our tool uses the uuid library which relies on cryptographically secure random number generation (crypto.getRandomValues) in your browser, ensuring high entropy and unpredictability.
Is my data stored when generating UUIDs?
No. All UUID generation happens entirely in your browser. No data is sent to any server, and nothing is stored. Each visit generates fresh UUIDs.