A Version 4 UUID is a 128-bit random identifier formatted into 32 hexadecimal digits separated by hyphens.

Developer Tools

Dev Utility

Updated FY 81/82

UUID / GUID Generator

Generate standards-compliant RFC 4122 v4 UUIDs / GUIDs with customizable quantity, uppercase, and hyphen options.

Tool Inputs & Parameters

Generate RFC 4122 compliant version-4 Universally Unique Identifiers (UUIDs) securely in browser.

Quantity (1 to 100)

Uppercase Letters (A-F)

Include Hyphens (-)

Generated UUIDs (5)

68ef6c5c-9095-4d52-a2b4-fc2fc29e2ce0
450917c2-12cf-4103-951e-9c2f1dcbe1ab
1662924e-a265-48db-941e-f4d4f7cd2955
e19d8212-316b-4d38-92bb-ba467d0422f5
0b196246-0845-4412-9eef-f902ca0255ce

Calculation Result

UUID / GUID Generator EngineActive

Grade A+ (Distinction)

Introduction

Generate cryptographically secure Universally Unique Identifiers (UUID v4) for software development databases and APIs.

Methodology & Execution

Uses browser Web Crypto API (crypto.getRandomValues) to produce 128-bit RFC 4122 compliant version-4 UUID strings.

Mathematical Formula / Rule

UUID v4 Format: xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx

Example Scenario

Generating 10 random UUIDs such as 550e8400-e29b-41d4-a716-446655440000.

Important Notes & Disclaimers

Uses Web Crypto API for maximum cryptographic randomness.

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