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UUID Generator

Generate unique identifiers (UUID/GUID) for applications, databases, and APIs. Cryptographically secure with customizable formatting options.

Generation Settings
Generate 1-100 UUIDs at once

Format Options

Preview Format:
f47ac10b-58cc-4372-a567-0e02b2c3d479
UUID Information

Technical Details

Version:UUID Version 4 (Random)
Format:8-4-4-4-12 hexadecimal digits
Total Bits:122
Random Bits:122

Uniqueness

Possible Values:5.3 × 10³⁶
Collision Risk:Negligible (< 1 in 10¹⁸)
Security: UUID v4 uses cryptographically secure random number generation, making them suitable for security-sensitive applications.
Common Use Cases

Database Records

Primary keys for distributed databases where auto-increment isn't suitable.

API Requests

Request IDs for tracking and correlation across microservices.

File Names

Unique file names to prevent conflicts in storage systems.

Session IDs

Secure session identifiers for web applications and APIs.

Transaction IDs

Unique identifiers for financial transactions and audit trails.

Resource IDs

Identifiers for cloud resources, containers, and distributed systems.

About UUID Generator

The UUID Generator creates universally unique identifiers (UUIDs) also known as globally unique identifiers (GUIDs). These 128-bit values are designed to be unique across space and time without requiring a central authority.

Features:

  • UUID Version 4 - Random/pseudo-random generation
  • Cryptographically Secure - Uses secure random number generation
  • Bulk Generation - Generate up to 100 UUIDs at once
  • Format Options - Customize case, dashes, and braces
  • Easy Copying - Copy individual or all UUIDs
  • File Export - Download UUIDs as text file

UUID Format:

Standard UUID format: xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxxwhere x is any hexadecimal digit and y is one of 8, 9, A, or B.

Why Use UUIDs?

  • No central authority required for generation
  • Extremely low probability of duplicates
  • Can be generated offline
  • Suitable for distributed systems
  • Industry standard (RFC 4122)