Free UUID Generator

Generate random UUID v4 identifiers instantly. Create one UUID or up to 100 identifiers at once, choose lowercase or uppercase format, and copy the results.

Last Updated: August 2026

Generated UUIDs

What is UUID v4?

UUID v4 is a randomly generated 128-bit identifier commonly used for database records, API resources, sessions and unique object identifiers.

UUIDs are generated locally in your browser.

What Is a UUID Generator?

A UUID Generator is an online tool for creating Universally Unique Identifiers (UUIDs). UUIDs are widely used in software development, databases, APIs, distributed systems and applications that need identifiers with a very low probability of collision.

EasyTools365 generates UUID v4 values directly in your browser, so you can create identifiers without installing additional software.

How to Generate a UUID

  1. Choose the number of UUIDs you want to generate, from 1 to 100.
  2. Select Lowercase or Uppercase.
  3. Click Generate UUIDs.
  4. Copy an individual UUID or click Copy All.

What Are UUIDs Used For?

  • Database record identifiers.
  • API resource identifiers.
  • Transaction and request IDs.
  • Session and object identifiers.
  • File and document identifiers.
  • Identifiers in distributed applications.

UUID v4 Explained

UUID version 4 uses randomly generated bits to create the identifier. A UUID is 128 bits and is normally displayed as 32 hexadecimal characters separated by four hyphens.

UUIDs have an extremely low probability of collision when generated correctly, but “unique” should not be interpreted as an absolute mathematical guarantee.

Frequently Asked Questions

Yes. The EasyTools365 UUID Generator is free to use online.

UUID stands for Universally Unique Identifier.

UUIDs are designed so that correctly generated identifiers have an extremely low probability of collision, but absolute uniqueness is not mathematically guaranteed.

This tool allows you to generate from 1 to 100 UUIDs at a time.

UUIDs can be used in databases, APIs, software applications, distributed systems and many other development projects.

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