Random UUID Generator
Generate random UUID v4 identifiers instantly. Free online tool for developers with bulk generation and export.
UUIDs (Universally Unique Identifiers) are essential in software development for creating unique identifiers without a central authority. Our UUID v4 generator creates random UUIDs following the RFC 4122 standard. These are perfect for database primary keys, API request IDs, session tokens, and distributed system identifiers. Generate up to 50 UUIDs at once and export them in JSON or CSV format. All generation happens locally in your browser with no server dependency.
How to Use This Tool
- 1. Select "UUIDs" from the data type dropdown
- 2. Set the quantity needed (1-50)
- 3. Click Generate to create UUIDs
- 4. Copy individual UUIDs or export all
- 5. Use JSON export for easy integration
Why Use This Tool
- RFC 4122 v4 compliant format
- Perfect for database primary keys
- Bulk generation and export
- No central authority needed
- Instant local generation
Frequently Asked Questions
What is a UUID v4?
UUID v4 is a 128-bit identifier generated using random numbers. It follows the format xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx where 4 indicates version 4.
Are UUID v4 values truly unique?
While not guaranteed unique, the probability of collision is astronomically low (about 1 in 2^122). For practical purposes, they are unique.
Can I use these in production?
For most applications, yes. For cryptographic purposes, ensure your runtime uses a cryptographically secure random number generator.
What is the format of a UUID?
UUIDs follow the format 8-4-4-4-12 hexadecimal characters, like: 550e8400-e29b-41d4-a716-446655440000.