UUID Generator — Generate Random Version 4 UUIDs

Inicio/Herramientas Dev/Generador de UUID

Suite de Herramientas para Desarrolladores

Utilidades Esenciales para Desarrolladores

Herramientas rápidas y seguras basadas en navegador para dar formato a JSON, codificar URLs, Base64, entidades HTML y generar UUIDs.

Selecciona una Utilidad

Generador de UUID

Genera UUIDs v4 compatibles con RFC 4122 localmente

100% en tu Navegador

Indentación: 2 Espacios 4 Espacios Tabulación

Entrada

Subir

Resultado / Salida

Garantía en el Navegador: Tus archivos y datos se procesan localmente en tu navegador y nunca se suben ni guardan en ningún servidor.

Ctrl+Enter para Ejecutar

SPECIFICATION

RFC 4122 v4 UUID Generation

Features and customization options for unique identifier generation.

Bulk Generation

Generate up to 100 unique identifiers at once, separated cleanly line by line for database seeds, mock data, and test environments.

Case & Hyphen Options

Toggle between lowercase and uppercase characters, with or without hyphens, or wrapped in standard curly braces {...}.

Cryptographically Strong

Powered by native browser hardware-backed randomness (Web Crypto API) ensuring unmatched uniqueness and zero server logging.

FAQ

UUID Generator Questions

What is a Version 4 UUID?

A Version 4 Universally Unique Identifier (UUID) is a 128-bit label generated using cryptographically secure pseudorandom numbers. The probability of generating two identical v4 UUIDs is practically zero (1 in 2^122).

How are UUIDs generated in this tool?

This tool uses the browser's native Web Cryptography API via crypto.randomUUID(), providing high-entropy, cryptographically strong random bits directly on your device.

What is the difference between a UUID and a GUID?

GUID (Globally Unique Identifier) is Microsoft's implementation of the UUID standard. In practice, GUID and UUID are synonymous terms referring to 128-bit unique identifiers formatted as 8-4-4-4-12 hexadecimal digits.