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UUID Generator

Generate UUIDs and GUIDs in various formats

Generated UUID

Format Options

Standard

b7efbc4f-0d69-4834-a67e-dfa76b1ff575

No Dashes

b7efbc4f0d694834a67edfa76b1ff575

Uppercase

B7EFBC4F-0D69-4834-A67E-DFA76B1FF575

Braces

{'{'}b7efbc4f-0d69-4834-a67e-dfa76b1ff575}

Bulk Generate

About UUIDs

• UUID v4 uses random numbers for generation
• 122 bits of randomness = 5.3 × 10³⁶ possible UUIDs
• Collision probability is essentially zero
• Commonly used for database primary keys and API identifiers

What is UUID Generator?

A UUID (Universally Unique Identifier) generator creates 128-bit identifiers that are unique across space and time without requiring a central authority. UUIDs come in several versions: v4 (random), v1 (timestamp-based), and v7 (timestamp-ordered random), each with different uniqueness and sorting properties.

How to use this calculator

1Select the UUID version: v4 for random (most common), v7 for time-ordered database primary keys.
2Choose how many UUIDs to generate: 1 for immediate use, bulk for seeding test data.
3Click Generate to produce new UUID(s).
4Copy the UUID(s) directly into your code, database, or testing tool.
5For bulk generation, download as a text file to use as seed data or test fixtures.

Why this matters for founders

UUIDs are the standard for generating unique identifiers in distributed systems, databases, and APIs. They eliminate the need for centralized ID generation and prevent collisions when merging data from multiple sources. Every startup's backend will use them.