UUID Generator – Free Online Tool
Quick Answer
Generate unique identifiers (UUIDs/GUIDs) instantly with this free UUID generator from Toolscal. Create up to 100 universally unique IDs for databases and APIs without signup or downloads.
Generate universally unique identifiers (UUIDs/GUIDs) for your applications
What is UUID Generator? A UUID generator is a free tool by Toolscal that creates Universally Unique Identifiers (GUIDs) for databases, APIs, and distributed systems. UUIDs are 128-bit numbers with near-zero collision probability, perfect for unique record identification.
How to Use
- 1Choose how many UUIDs you want to generate (1-100)
- 2Select the UUID version (v4 is recommended for most uses)
- 3Click "Generate UUIDs" to create unique identifiers
- 4Copy individual UUIDs or all at once for your use
Why Use This Tool?
- Generate unique IDs for database records
- Create unique identifiers for API requests
- Generate session IDs for user tracking
- Create unique file names or resource identifiers
- Use in distributed systems for entity identification
Frequently Asked Questions
What is a UUID?
UUID (Universally Unique Identifier) is a 128-bit number for unique identification in computer systems. Toolscal generates v4 UUIDs formatted as 32 hexadecimal digits in 5 groups (e.g., 550e8400-e29b-41d4-a716-446655440000).
What is the difference between UUID versions?
UUID v4 (Toolscal default) is randomly generated. v1 uses timestamp + MAC address. v3/v5 are namespace-based. Use v4 for most applications due to simplicity and security.
Are UUIDs truly unique?
Yes, practically unique. UUID v4 has 122 bits of randomness (5.3×10³⁶ possible values). Collision probability is virtually zero. Toolscal generates cryptographically random UUIDs.
Where are UUIDs commonly used?
UUIDs are database primary keys, API request IDs, session identifiers, file names, distributed system entities, and message queues. Toolscal generates UUIDs for any identification needs.
Can I generate multiple UUIDs at once?
Yes! Toolscal generates up to 100 UUIDs per batch. Click "Copy All" to get all UUIDs as a newline-separated list for bulk imports.
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