Free tools

UUID Generator

Generate random UUIDs (v4) instantly in your browser — free, no sign-up, nothing sent to a server.

UUID Generator Online

Generate one or more random version 4 UUIDs instantly. Choose how many you need, click Generate UUID, and copy the results. Everything runs in your browser using the Web Crypto API — nothing is sent to a server.

What Is a UUID?

A UUID (Universally Unique Identifier) is a 128-bit label used to uniquely identify information in computer systems. Version 4 UUIDs are randomly generated and have the form xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx where x is a random hex digit. The probability of generating a duplicate UUID is astronomically small.

Common Uses

  • Primary keys for database records
  • Unique identifiers for distributed systems where a central counter is impractical
  • Correlation IDs for tracing requests across microservices
  • Filenames for uploaded files to avoid collisions
  • Session or token identifiers

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Super tools

Welcome to Super Tools! We're here to provide you with a collection of easy-to-use tools and utilities to help make your day-to-day tasks a little bit easier.

About Super Tools

Whether you need to quickly count the number of characters in a block of text, convert measurements from pixels to inches, or generate a catchy business name, you'll find what you need right here.

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Is Super Tools free?

Our suite of productivity tools is 100% free for anyone to use. We believe everyone should have access to helpful utilities that can save time and make life easier. Whether you're a student, freelancer, small business owner, or just someone looking to simplify certain tasks, you can take advantage of our free character counters, unit converters, name generators, and more without paying a dime. Our commitment to providing valuable, cost-free resources is central to our mission. You'll never encounter paywalls, subscriptions, or hidden fees on our site - just high-quality tools that you can use at no charge. Explore our growing collection of free online utilities today and discover how they can streamline your workflows and boost your productivity.