Generate a Random UUID

Need unique identifiers for your programming projects, database records, or API development? The Generate a Random UUID creates universally unique identifiers (UUIDs) following RFC 4122 standards with support for multiple UUID versions and flexible formatting options. Whether you’re building software applications, managing database schemas, or creating test data, this tool generates authentic UUIDs that meet industry specifications.

Perfect for developers working with databases, API architects designing microservices, or system administrators managing distributed systems. The generator supports UUID versions 1, 3, 4, and 5, each optimized for different use cases from random generation to time-based and name-based identifiers.

Total UUIDs: 5
Options
Remove dashes
Add braces
Add quotes
Include prefix
Maximize output
Output format:
Case style:

How to Use:

1. Set Generation Parameters

  • Choose how many UUIDs to generate (1-1,000)
  • Select UUID version: v1 (time-based), v3 (MD5 hash), v4 (random), or v5 (SHA-1 hash)
  • UUID v4 is most commonly used for general purposes

2. Configure Formatting Options

  • Toggle “Remove dashes” for compact 32-character format
  • Enable “Add braces” to wrap UUIDs in curly brackets
  • Turn on “Add quotes” for string literal formatting
  • Use “Include prefix” to add “UUID:” before each identifier

3. Choose Display Style

  • Lines: Each UUID on its own line (standard format)
  • Comma-separated: All UUIDs in one line with commas
  • Array format: Programming-ready array with proper syntax

4. Select Case Style

  • Lowercase: Standard lowercase hex characters (recommended)
  • Uppercase: Capital hex characters for specific requirements

5. Generate and Export

  • Click “Generate UUIDs” to create new unique identifiers
  • Use “Copy” to copy formatted UUIDs to clipboard
  • Click “Export to File” to download as .txt file
  • Enable “Maximize output” for viewing large batches

What Random UUID Generator Can Do:

The Random UUID Generator produces cryptographically strong unique identifiers suitable for production applications. UUID v4 generates 122 bits of randomness, providing virtually zero chance of collision. UUID v1 includes timestamp and MAC address information, making it ideal for distributed systems requiring temporal ordering.

Developers use UUIDs as primary keys in databases, session identifiers in web applications, and unique resource identifiers in REST APIs. The tool’s formatting options support various programming languages and frameworks – remove dashes for compact storage, add braces for Microsoft GUID format, or use array format for JavaScript and JSON applications.

The multiple UUID versions serve different purposes: v1 for time-ordered records, v4 for maximum randomness, and v3/v5 for deterministic generation based on namespace and name inputs. All versions maintain the 128-bit length and standard hyphenated format unless modified by formatting options.

Example:

Input Settings: 3 UUIDs, version 4, with braces and quotes, array format

Before: Generate 3 random UUIDs in array format

After:

[
  "{f47ac10b-58cc-4372-a567-0e02b2c3d479}",
  "{a3b8f7e2-4d1c-4e9a-b2f5-8c6d9e1a3b7c}",
  "{e8d4a6b3-7f2e-4c1a-9b5d-6e3f8a9c2d7e}"
]

Random UUID Generator Table:

Examples showing different UUID versions and formatting options.

UUID VersionFormat OptionsSample Output
Version 4 (Random)Standard formatf47ac10b-58cc-4372-a567-0e02b2c3d479
Version 1 (Time-based)With braces{1ec9414c-232a-11ee-b3e2-0242ac120002}
Version 4 (Random)No dashes, uppercaseA3B8F7E24D1C4E9AB2F58C6D9E1A3B7C
Version 5 (SHA-1)With quotes and prefixUUID: “e8d4a6b3-7f2e-5c1a-9b5d-6e3f8a9c2d7e”
Version 3 (MD5)Array format[“9f5e2a8c-3b6d-3a1e-8c7f-2d9e6a5b8c3f”]
Version 4 (Random)Comma-separatedc2e7f4a9-8d3b-4f6e-a1c5-7e9b2f5a8d3c, f1a2b3c4-d5e6-4f7a-8b9c-0d1e2f3a4b5c

Common Use Cases:

Software developers use UUIDs as primary keys in distributed databases where auto-increment integers aren’t suitable. Web application architects implement UUIDs for session management, user tokens, and API request tracking. The tool’s bulk generation feature helps create test data for development and staging environments.

Database administrators prefer UUIDs for replication scenarios where records need unique identifiers across multiple servers. System architects use time-based UUIDs (v1) for event logging and audit trails where chronological ordering matters. Game developers generate UUIDs for player profiles, match sessions, and virtual item identifiers.

Security teams use UUIDs for temporary passwords, one-time tokens, and security keys where unpredictability is crucial. Integration developers working with REST APIs and microservices use UUIDs for resource identification and correlation IDs across distributed systems. The various formatting options ensure compatibility with different programming languages and data storage systems.

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