Password Generator
Generate secure passwords from 8 to 64 characters.
UUID Generator
Generate version 4 universally unique identifiers.
Publicidad / Advertisement
ℹ️ This tool is for informational purposes only. It does not replace professional advice.
The UUID generator creates version 4 (random) universally unique identifiers directly in your browser with the Web Crypto API. A UUID lets you unambiguously label databases, sessions, transactions or tests without relying on a centralized counter. Generate from 1 to 10 codes at once and copy them with a click. Everything is created locally, without sending anything to any server. Use it as many times as you need: it is completely free, requires no sign-up and works directly in your browser.
Frequently asked questions
¿Qué es un UUID?
Es un identificador de 128 bits en formato hexadecimal (ej. 550e8400-e29b-41d4-a716-446655440000) pensado para ser único sin coordinación central.
¿Qué diferencia hay entre UUID v1 y v4?
La v1 usa tiempo y dirección MAC de la máquina; la v4 se genera con números aleatorios. En la práctica, la v4 es la opción más usada y no expone información del ordenador.
¿Pueden repetirse dos UUID?
En la práctica no: hay 2¹²² variantes aleatorias. La probabilidad de colisión es tan baja que se considera despreciable en cualquier aplicación real.
What is a UUID?
It is a 128-bit identifier in hexadecimal format (e.g. 550e8400-e29b-41d4-a716-446655440000) designed to be unique without central coordination.
What is the difference between UUID v1 and v4?
v1 uses time and the machine's MAC address; v4 is generated with random numbers. In practice v4 is the most used option and does not expose computer information.
Can two UUIDs repeat?
In practice no: there are 2¹²² random variants. The probability of collision is so low it is considered negligible in any real application.