UUID Generator: Create Unique Identifiers Instantly

UUIDs (Universally Unique Identifiers) are essential for databases, distributed systems, and modern applications.

What is a UUID?

A UUID is a 128-bit identifier that's unique across space and time. Format example:

550e8400-e29b-41d4-a716-446655440000

UUID Versions

Version 4 (Random)

The most common type. Generated using random numbers. Our tool generates v4 UUIDs.

Other Versions

• v1 - Time-based
• v3 - Name-based (MD5)
• v5 - Name-based (SHA-1)

Common Use Cases

• Database primary keys - Unique record identifiers
• Session tokens - User session management
• API request IDs - Track requests across services
• File naming - Prevent naming conflicts
• Transaction IDs - Track operations

Why Use UUIDs?

Globally unique - No collision risk

Decentralized - No central authority needed

Unpredictable - Can't guess next ID

Portable - Works across systems

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Generate UUIDs instantly with our free online tool!