Free UUID Generator

UUID Generator

Generate Secure Unique Identifiers

Generate cryptographically secure UUIDs for databases, APIs, and distributed systems. Create unique identifiers instantly.

UUID v1 & v4

Instant Generation

One-Click Copy

Generate secure unique identifiers with customizable options

UUID v4 (Random)

Cryptographically random, most secure

UUID v1 (Timestamp)

Contains timestamp and MAC address

Standard

xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx

No Hyphens

xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

Uppercase

XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX

Quantity1

150

Use UUID v4 for security-sensitive applications

UUIDs are 128-bit identifiers (36 chars with hyphens)

Perfect for distributed systems and microservices

No central authority needed for generation

URL-safe and database-friendly

Use UUIDs Effectively

Follow these proven strategies to implement UUIDs correctly in your applications and systems.

Use UUID v4 for most applications due to its randomness. Use v1 only when you need timestamp information.

Store UUIDs as BINARY(16) in MySQL or use the native UUID type in PostgreSQL for better performance.

Use UUIDs in REST API endpoints instead of sequential IDs to prevent information disclosure.

UUIDs are perfect for microservices and distributed systems where you can't rely on a central ID generator.

Generate secure, unique identifiers for your applications. Start creating UUIDs now!