UUID Generator
Generate RFC 4122 compliant UUIDs (v4 random, v1 time-based) instantly. Create 1–100 UUIDs at once for databases, APIs, and development.
How to Use
- 1 Select the UUID version: v4 (random, recommended) or v1 (time-based)
- 2 Set the count of UUIDs to generate (1–100)
- 3 Click Generate to create UUIDs
- 4 Click Copy All or use individual copy buttons to copy to clipboard
Use Cases
Generate UUIDs for use as unique primary keys in distributed databases where sequential IDs cause conflicts.
Create test UUIDs for mocking API responses or seeding development and staging databases.
Generate unique identifiers for session tokens, request correlation IDs, or distributed tracing.
FAQ
UUID (Universally Unique Identifier) is a 128-bit identifier defined by RFC 4122, formatted as 32 hex digits in 5 groups: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx.
UUID v1 is time-based and encodes the current timestamp and MAC address, making it sortable. UUID v4 is randomly generated and is recommended for most use cases due to privacy.
UUID v4 has 2^122 possible values. The probability of a collision is so astronomically low that UUIDs are treated as globally unique in practice.
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