Do Generator

UUID Generator

Generate RFC 4122 compliant UUIDs (Universally Unique Identifiers) in multiple versions. Cryptographically secure, instant generation with bulk support.

100% Secure - Generated Locally in Your Browser
RFC 4122 Compliant Cryptographically Secure Bulk Generation

Generate UUID

Select UUID version and customize options

UUID v4 (Random): Generated using cryptographically secure random numbers. Most commonly used version.

Generated UUIDs

Click "Generate UUIDs" to create unique identifiers

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Understanding UUID Versions

Choose the right UUID version for your specific use case

v1

UUID v1 (Time-based)

Generated from the current timestamp and MAC address. Provides uniqueness across space and time.

Use for: Distributed systems, database keys
v4

UUID v4 (Random)

Generated using cryptographically secure random numbers. Most commonly used version.

Use for: General purpose, security-sensitive applications
v5

UUID v5 (Name-based)

Generated from a namespace and name using SHA-1 hashing. Produces consistent UUIDs for the same input.

Use for: Consistent URLs, namespace-based identifiers
v7

UUID v7 (Time-ordered)

Generated from Unix timestamp with millisecond precision. Sortable by creation time.

Use for: Database indexes, time-series data

Technical Specifications

Our UUID generator uses industry-standard algorithms and security practices

Security Features

  • RFC 4122 compliant generation
  • Cryptographically secure randomness (Web Crypto API)
  • Client-side generation only
  • Practically unique collision resistance

Customization Options

  • Multiple UUID versions (v1, v4, v5, v7, Nil)
  • Bulk generation (up to 100)
  • Uppercase and no-dash formats
  • Instant copy and download