UUID Generator

A UUID (Universally Unique Identifier) is a 128-bit number used to uniquely identify information in computer systems. With 2^122 possible combinations, the probability of generating a duplicate is practically zero.

UUID v4 uses random numbers to generate identifiers, while UUID v7 uses a timestamp-based approach that allows for better database indexing. Both are widely supported across programming languages and databases.

Distributed systems need unique IDs without a central coordinator. UUIDs solve this by using randomness (v4) or timestamps (v7) to guarantee uniqueness across machines, databases, and services.

Unlike auto-incrementing integers, UUIDs don't reveal how many records exist in your database and can't be easily guessed. They're ideal for primary keys, request IDs, file names, and any scenario requiring globally unique identifiers.

Select your preferred UUID version (v4 or v7) from the dropdown. The tool generates a new UUID instantly. You can generate multiple UUIDs at once and copy them individually or all together.

Choose from different format options: standard (with dashes), uppercase, or without dashes. Use the Copy All button to copy multiple UUIDs at once.