UUID Generator is a free online tool that creates Universally Unique Identifiers (UUIDs), also known as GUIDs (Globally Unique Identifiers). UUIDs are 128-bit values used to uniquely identify objects, records, and resources in software systems without requiring a central authority.
The tool supports multiple UUID versions including v1 (timestamp-based), v4 (random), and v7 (timestamp-ordered random), which are the most commonly used versions in modern software development. You can generate a single UUID or bulk-generate dozens at once with a single click.
UUIDs are essential in distributed systems, databases, APIs, and microservices where unique identification is needed across different servers and services. Whether you need a primary key for a database record, a session token, or a unique file name, this tool generates standards-compliant UUIDs instantly in your browser.
Choose the UUID version you need: v1 (timestamp-based), v4 (random), or v7 (timestamp-ordered). V4 is the most commonly used version.
Choose how many UUIDs to generate at once. You can generate a single UUID or bulk-generate multiple UUIDs for batch operations.
Click the generate button to create your UUIDs. Each one is guaranteed to be unique and compliant with the RFC 4122 standard.
Click on any UUID to copy it to your clipboard, or use the copy all button to grab the entire batch for use in your application.
Generate UUID v1 (timestamp), v4 (random), and v7 (timestamp-ordered) to match your requirements
Generate multiple UUIDs at once for batch operations like seeding databases or creating test data
All generated UUIDs comply with RFC 4122 standards for guaranteed uniqueness and compatibility
UUIDs are generated locally in your browser using cryptographic random number generation
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