UUID v4 Generator for Databases
Create random UUID v4 IDs for database records.
Security: v4 RFC4122 UUIDs generated via crypto.randomUUID().
How to use?
Generate UUID v4
Generate a random UUID v4 for database usage.
Copy ID
Copy the UUID v4 value.
Use as Primary Key
Use UUID v4 as a database primary key.
Use cases
How this tool can help you in real-world scenarios
🗄️ Primary Keys
Use UUID v4 instead of auto-increment IDs for better scalability.
🌐 Distributed Databases
Avoid ID conflicts across distributed database systems.
📊 Data Migrations
Safely merge data from multiple databases using UUID v4.
🧪 Test Databases
Generate UUID v4 values for database testing.
🔐 Public Records
Hide internal database structure using random UUIDs.
Frequently Asked Questions
Why use UUID v4 in databases?
UUID v4 provides globally unique identifiers without coordination, making it ideal for distributed and replicated databases.
Are UUID v4 values indexed?
Yes. UUID v4 columns can be indexed, though indexing strategies may vary depending on the database.
Are UUID v4 slower than integers?
UUID v4 may be slightly slower than integers, but the scalability and uniqueness benefits often outweigh the cost.
Do all databases support UUID v4?
Most modern databases such as PostgreSQL, MySQL, and MongoDB support UUID v4.
Is this generator free?
Yes. This UUID v4 generator is free and browser-based.