UUID/GUID Generator
Generate standards-compliant, random UUIDs (Version 4) for your applications and databases.
Single UUID Generator
Quickly generate and copy a single UUID.
Bulk UUID Generator
Generate multiple UUIDs at once.
What is a UUID/GUID?
A UUID (Universally Unique Identifier), also commonly known as a GUID (Globally Unique Identifier), is a 128-bit number used to uniquely identify information in computer systems. The key feature of a UUID is that its value is, for all practical purposes, unique. This means that if you generate a UUID today, the chance of anyone else generating the exact same one is astronomically small.
This tool specifically generates Version 4 UUIDs, which are created using random or pseudo-random numbers.
Common Use Cases for UUIDs
- Database Keys: Using UUIDs as primary keys in a database is very common in distributed systems. It avoids the conflicts that can arise when different systems try to generate sequential numeric IDs.
- Transaction IDs: Assigning a unique UUID to every transaction (e.g., an order or a payment) ensures you have a distinct identifier for logging and tracking.
- Session Identifiers: Generating a unique ID for a user's session on a website.
- Resource Naming: Naming files, user accounts, or any other resource in a system where you need to guarantee no two items have the same name.