UUID Generator
Developer ToolsGenerate unique UUIDs (v4) for your applications with one click, supporting bulk generation.
How to use UUID Generator
- 1Enter your input in the text area above
- 2Click the action button to process your data
- 3View the result and copy it to your clipboard
Common Use Cases
Database Primary Keys
Generate unique IDs for database records and tables.
Session Tokens
Create unique session identifiers for user authentication.
API Request IDs
Generate trace IDs for API request tracking and logging.
Transaction IDs
Create unique identifiers for e-commerce transactions.
Frequently Asked Questions
What is a UUID v4 and how unique is it?
UUID v4 is a randomly generated 128-bit identifier. With 2^122 possible values, the probability of generating a duplicate is astronomically low β you would need to generate billions of UUIDs per second for centuries to have a 50% chance of a single collision.
When should I use UUIDs instead of auto-increment IDs?
Use UUIDs in distributed systems where multiple servers generate IDs independently, when merging databases, for public-facing identifiers to prevent enumeration attacks, or when offline data generation is required without a central authority.
Are UUIDs generated in the browser cryptographically secure?
Yes. Our UUID Generator uses the Web Crypto API (crypto.randomUUID()) which generates cryptographically strong random values, making the UUIDs suitable for security-sensitive applications like session tokens and API keys.
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