UUID Generator
Generate single or bulk cryptographically secure UUID v4 (Random) or UUID v1 (Time-based) identifiers.
Format Standard
A standard UUID has 36 characters including 4 hyphens: 8-4-4-4-12 character blocks. Without hyphens, it becomes a 32-character hexadecimal string.
Collision Math
If you generate 1 trillion UUID v4s every second for the next 100 years, the probability of finding a single duplicate is about 0.00000000006. It is mathematically virtually impossible to collide.
Complete Guide: How to Use the UUID Generator
Generating unique identifier keys is a frequent database-provisioning requirement in modern backend architectures like microservices, REST APIs, or transaction logging. Our bulk UUID Generator delivers highly secure v4 and v1 codes instantly. Customized with multiple options like casing adjustments and hyphen toggles, all running fully inside your browser.
Step-by-Step Instructions
- Choose your UUID version (UUID v4 is standard random; UUID v1 is time-based).
- Enter the number of UUIDs you wish to generate (from 1 up to 100 codes in bulk).
- Toggle formatting options: choose whether to output them in UPPERCASE or remove the standard hyphens.
- Click the 'Generate UUIDs' button to build the list in real-time.
- Click 'Copy All UUIDs' to copy the entire generated list (one per line) or use 'Copy' on single values.
Key Features & Benefits
- Cryptographically Secure: Uses browser-level secure random number generation APIs (`crypto.getRandomValues`) for UUID v4.
- Bulk Generation: Save time by generating up to 100 UUIDs at a single click.
- Custom Format Options: Instantly strip hyphens or toggle uppercase letters depending on database key guidelines.
- Standard Compliant: Generates valid v4 and v1 UUIDs following the official RFC 4122 specification.