Create universally unique identifiers instantly with our professional UUID generator. Support for both UUID v1 and v4 formats with customizable options for databases, APIs, and development projects requiring unique identification.
Create UUIDs with customizable formats for your development needs
Follow these simple steps to create unique identifiers for your projects
Choose the number of UUIDs to generate, select version (v1 or v4), and customize format options like hyphens and case.
Click generate to create your unique identifiers instantly. Each UUID is guaranteed to be unique and ready for use.
Copy individual UUIDs or download all generated identifiers as a text file for use in your projects.
Professional-grade features for developers and system architects
Support for both UUID v1 (timestamp-based) and v4 (random) to meet different application requirements.
Generate up to 1000 UUIDs instantly with high-performance algorithms ensuring uniqueness and reliability.
Toggle hyphens, switch between uppercase and lowercase, and format UUIDs exactly as needed for your system.
Copy individual UUIDs or download bulk sets as text files for seamless integration into your development workflow.
Uses secure random number generation for UUID v4, ensuring unpredictability and security for sensitive applications.
Generated UUIDs conform to RFC 4122 standards, ensuring compatibility with all modern systems and databases.
Choose the right UUID version for your specific use case and requirements
| Version | Generation Method | Best For | Characteristics |
|---|---|---|---|
| UUID v1 | Timestamp + MAC | Sortable identifiers | Time-ordered, traceable |
| UUID v4 | Random generation | General purpose, privacy | Unpredictable, secure |
Get answers to common questions about UUIDs and unique identifier generation
A UUID (Universally Unique Identifier) is a 128-bit value used to uniquely identify objects or entities. UUIDs are extremely useful for databases, APIs, and distributed systems where unique identification is crucial.
UUID v1 is timestamp-based and includes MAC address information, making it predictable but sortable. UUID v4 is randomly generated, providing better privacy and unpredictability for most use cases.
UUID v4 has an astronomically low probability of collision (about 1 in 5.3 x 10^36). For practical purposes, they can be considered globally unique without coordination.
Yes! You can toggle hyphens on/off, switch between uppercase and lowercase, and choose between different UUID versions to match your specific requirements.
You can generate up to 1000 UUIDs at once. For larger batches, consider generating multiple smaller sets to maintain browser performance.
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