UUID Generator

A UUID (Universally Unique Identifier) is a 128-bit label used for information in computer systems. The term GUID (Globally Unique Identifier) is also used, typically in Microsoft software.

This tool allows you to generate standard UUIDs instantly. You can choose between:

Version 4 (Random): The most common UUID version. It is generated using random numbers and provides a very high probability of uniqueness. Recommended for most use cases like database keys, session IDs, and file names.
Version 1 (Time-based): Generated using the current time and the MAC address of the computer (or a random node ID). This version is useful when you need to sort UUIDs chronologically or ensure uniqueness across different machines.
Version 7 (Time-ordered): A newer standard that combines a timestamp with random data. It is sortable by time (like v1) but doesn't expose the MAC address and is more compact in databases. Ideal for modern distributed systems.

Common Use Cases

Database Primary Keys: Using UUIDs allows for distributed database systems without collision risks.
Session Identifiers: Securely identify user sessions in web applications.
Transaction IDs: Track unique events or transactions in logs and systems.
File Naming: Generate unique filenames to prevent overwriting user uploads.

A UUID (Universally Unique Identifier) is a 128-bit label used for information in computer systems. The term GUID (Globally Unique Identifier) is also used, typically in Microsoft software.

This tool allows you to generate standard UUIDs instantly. You can choose between:

Version 4 (Random): The most common UUID version. It is generated using random numbers and provides a very high probability of uniqueness. Recommended for most use cases like database keys, session IDs, and file names.
Version 1 (Time-based): Generated using the current time and the MAC address of the computer (or a random node ID). This version is useful when you need to sort UUIDs chronologically or ensure uniqueness across different machines.
Version 7 (Time-ordered): A newer standard that combines a timestamp with random data. It is sortable by time (like v1) but doesn't expose the MAC address and is more compact in databases. Ideal for modern distributed systems.

Common Use Cases

Database Primary Keys: Using UUIDs allows for distributed database systems without collision risks.
Session Identifiers: Securely identify user sessions in web applications.
Transaction IDs: Track unique events or transactions in logs and systems.
File Naming: Generate unique filenames to prevent overwriting user uploads.