Generate free UUIDs online with our UUID Generator. Create UUID v1, v4 and v7 identifiers, copy them instantly, and generate multiple UUIDs for development and testing.
A UUID, or Universally Unique Identifier, is a 128-bit identifier commonly used to uniquely identify records, users, objects, transactions, API resources and other data in software applications.
UUIDs are widely used in databases, APIs, distributed systems, microservices, testing environments and applications where unique identifiers are required.
This UUID Generator lets you create UUID v1, UUID v4 and UUID v7 identifiers directly in your browser. You can generate multiple UUIDs, filter the results, change their format and export them as TXT or JSON.
UUID v1uses a timestamp-based structure. UUID v4is randomly generated and is commonly used for general-purpose unique identifiers. UUID v7includes a Unix millisecond timestamp and is designed for time-ordered identifiers.
You can display generated UUIDs in standard lowercase format, uppercase format, without hyphens or inside braces. This is useful when UUIDs need to match the format expected by a particular application or database.
Developers can use this tool to generate test data for APIs, databases, applications, microservices, software testing and development environments.
The Copy JSON option creates a structured JSON object containing the selected UUID version, output format, total count and generated UUID values. This makes it convenient to use generated identifiers in development and testing workflows.
A UUID, or Universally Unique Identifier, is a 128-bit identifier commonly used to uniquely identify records, users, objects, transactions and resources in software applications.
UUID v1 is timestamp-based, UUID v4 is randomly generated, and UUID v7 combines a Unix millisecond timestamp with random data to provide time-ordered identifiers.
UUID v4 is a common choice for general-purpose random identifiers, while UUID v7 can be useful when identifiers need time ordering. UUID v1 is useful for applications that specifically require its timestamp-based structure.
Yes. This UUID Generator can generate up to 100 UUIDs at once and provides filtering, individual copy, bulk copy and export options.
Yes. Use the Copy JSON button to copy the generated UUID list as a JSON object that can be used for development and testing.
Yes. Generated UUIDs can be downloaded as either a TXT file or a JSON file.
Yes. UUIDTools.online provides this UUID Generator free of charge without requiring software installation.
Yes. Enter text in the Filter Generated UUIDs field to instantly search through the generated UUID list.