UUID (Universally Unique Identifier) is a 128-bit unique identifier used to label information in networks or systems. GUID is Microsoft’s implementation of the UUID standard, and both are mostly interchangeable. UUID format is “xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx” with hex characters, ensuring a very low collision probability.
UUIDs are widely used in database keys, distributed systems, encryption, device IDs, and more. Using UUID avoids conflicts from centralized allocation, improving system security and scalability. Even when generating in bulk, the chance of duplication is extremely low.
This online UUID generator supports single or batch creation, allows selecting different versions (v1, v4, v6, v7), quantity, case, and hyphen options. Features one-click copy, clear, and TXT download for easy saving and reuse.
Generated UUIDs fully comply with standard formats and can be used in software, development, or games (like Minecraft). v4 is recommended for general use, v1 for timestamp/MAC info. Hyphens can be removed for storage or transmission, but backend validation is advised to ensure uniqueness and security.
UUID (Universally Unique Identifier) labels information and resources. This tool provides online generation and batch export features.
You can also generate and copy UUIDs on mobile devices.