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UUID Generator – Create Random UUIDs Online

Create random UUID version 4 (v4) identifiers online instantly with our UUID Generator. Ideal for developers, database administrators, and API designers who need globally unique IDs without collisions. Fast, secure, and browser-based—no signup or installation required.

RFC 4122 Variant
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Universally Unique Identifier • Version 4 (Random)

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About This Tool

Learn what makes this tool special

Generate random UUID v4 (Universally Unique Identifier) instantly with our free online UUID generator. Create secure, collision-resistant unique identifiers perfect for databases, APIs, distributed systems, and software development. Our UUID generator uses cryptographically secure random number generation to ensure maximum uniqueness and security. Generate single UUIDs or create bulk lists for multiple records. All processing happens locally in your browser - no data storage, no server uploads, complete privacy. Perfect for developers, database administrators, and anyone needing reliable unique identifiers. Supports UUID v4 standard with 122 bits of randomness, providing a collision probability of approximately 1 in 2^122.

Key Features

What makes this tool special

  • Generate unlimited UUID v4 identifiers for free
  • Cryptographically secure random generation
  • Extremely low collision probability (1 in 2^122)
  • Generate single UUIDs or bulk lists
  • Copy UUIDs to clipboard with one click
  • RFC 4122 compliant UUID v4 format
  • 100% browser-based processing - no uploads
  • No data storage or server communication
  • Mobile-friendly responsive design
  • Instant generation with no delays
  • Batch generation for multiple identifiers
  • Proper UUID formatting and validation
  • Support for database primary keys
  • Perfect for APIs and distributed systems

Quick Guide

Master this tool in seconds

  1. 1
    Click 'Generate UUID' to create a new unique identifier
  2. 2
    Use 'Generate Multiple' to create bulk UUID lists
  3. 3
    Copy individual UUIDs using the copy button
  4. 4
    Select and copy multiple UUIDs as needed
  5. 5
    Use generated UUIDs in your applications, databases, or APIs

Common Questions

Everything you need to know

Q.What is a UUID and why use it?

A.

UUID (Universally Unique Identifier) is a 128-bit number used to uniquely identify information in computer systems, perfect for databases and distributed applications.

Q.How unique are the generated UUIDs?

A.

Extremely unique! UUID v4 has a collision probability of approximately 1 in 2^122, making duplicates virtually impossible.

Q.Is this UUID generator secure?

A.

Yes, uses cryptographically secure random generation methods, same as professional development tools.

Q.Are generated UUIDs stored anywhere?

A.

No, all UUIDs are generated locally in your browser and never stored, logged, or transmitted.

Q.Can I generate multiple UUIDs at once?

A.

Yes, you can generate bulk lists of UUIDs for populating databases or testing applications.

Q.What format are the UUIDs in?

A.

Standard RFC 4122 UUID v4 format: xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx

Q.Does it work offline?

A.

Yes, once loaded, the UUID generator works completely offline with no internet connection required.

Q.Can I use these UUIDs in my database?

A.

Absolutely! UUIDs are perfect for primary keys in databases, especially distributed systems.

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