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GUID / UUID Generator

Generate random, cryptographically secure Version-4 GUIDs (UUIDs) in single or bulk batches. Customize uppercase/lowercase formatting, curly braces, and hyphens with instant copy-to-clipboard.

Generate random, cryptographically secure Version-4 GUIDs (UUIDs) in single or bulk batches. Customize uppercase/lowercase formatting, curly braces, and hyphens with instant copy-to-clipboard.

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Generated GUIDs

404a0dae-0925-43c1-bb25-f5cbe40c21d9

About GUIDs / UUIDs

A GUID (Globally Unique Identifier) or UUID (Universally Unique Identifier) is a 128-bit value often used as a unique ID in software. Version 4 (random) is generated here.

  • With hyphens: e.g. 550e8400-e29b-41d4-a716-446655440000
  • Without hyphens: e.g. 550e8400e29b41d4a716446655440000

How to Use GUID / UUID Generator Online

  1. Choose UUID version: Select Version 4 (random cryptographically secure UUID).
  2. Select quantity & formatting: Choose how many GUIDs you need and toggle uppercase/lowercase and hyphens.
  3. Copy GUIDs: Copy individual GUIDs or download the entire list for database seeding and development.

ClickBasic tools run 100% securely with zero installation, no registration, and no limits.

Key Features of ClickBasic GUID / UUID Generator

RFC 4122 Compliant UUIDv4: Generates standardized 128-bit globally unique identifiers with 122 bits of entropy.
Bulk Batch Generation: Generate 1, 10, 50, or 100 GUIDs at once for testing and database migrations.
Formatting Toggles: Customize hyphens, braces {uuid}, and uppercase or lowercase letters.
CSPRNG Cryptographic Seed: Guarantees zero collision probability across modern distributed databases.

Frequently Asked Questions

A UUID (Universally Unique Identifier) or GUID (Globally Unique Identifier) is a 128-bit identifier used in software and databases to guarantee uniqueness without a central registry.

The probability of a collision in UUIDv4 is mathematically infinitesimal—you would need to generate 1 billion UUIDs every second for 85 years to have a 50% chance of a single collision.

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