Is UUID Generator free to use?

Yes. UUID Generator on WoDeTool is completely free with no sign-up required. Open the page and start using it immediately.

Can I use UUID Generator for database design?

Use UUID as database primary keys in distributed databases to avoid ID conflicts in database sharding scenarios.

Can I use UUID Generator for business number generation?

Generate order IDs, serial numbers, work order numbers and device identifiers to ensure global uniqueness within the system.

online UUID generator

Generate UUID v4

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Quick start: UUID Generator in 3 steps

Paste or type your input into the UUID Generator input area on this page
Review the formatted, decoded, or validated output instantly in the browser
Copy the result or open a related tool (Diff, Encoder, etc.) from the links below

About UUID Generator

The UUID Generator is an online unique identifier generator. UUID (Universally Unique Identifier) is a string of hexadecimal characters with global uniqueness, so duplicate values will never appear. It is widely used in distributed systems, database primary keys, order numbers, file identifiers, user tokens and cache keys. This tool runs in browsers without software installation. It supports single and batch generation of standard UUIDs in mainstream versions, fully complying with RFC 4122 international standards. Generated UUIDs have standard separators. Users can copy a single UUID or all results with one click. The tool features fast response and standardized output, and prevents invalid operations. It helps developers and office staff obtain standard unique identifiers for various business scenarios.

How UUID Generator works

With the popularity of distributed architecture, microservices and cloud systems, traditional auto-increment numeric IDs can no longer meet the demand for global uniqueness, and UUID has become the mainstream solution. Generating UUID natively relies on programming language built-in functions. Batch generation requires writing loop code, which is complicated and inefficient for temporary use.

Beginners and non-developers have no idea how to generate standard UUIDs with programming languages. UUID formats vary among different languages and tools. Manually adding separators and adjusting formats is time-consuming and likely to cause non-standard results. Installing dedicated desktop software only for UUID generation is not cost-effective due to low usage frequency.

Why use UUID Generator on WoDeTool

WoDeTool bundles UUID Generator with 50+ related utilities, smart clipboard detection, and one-click tool pipelines — so you can format JSON, decode JWT, and diff payloads without switching tabs or installing CLI tools.

Use Smart Clipboard on the home page to auto-detect pasted JSON, Base64, or JWT and jump to UUID Generator. Save a tool pipeline to chain UUID Generator with related utilities. Read our guides for real-world workflows.

Create a pipeline →Browse guides →

Common use cases

•Database Design: Use UUID as database primary keys in distributed databases to avoid ID conflicts in database sharding scenarios.
•Business Number Generation: Generate order IDs, serial numbers, work order numbers and device identifiers to ensure global uniqueness within the system.
•API & Token: Generate unique request IDs, temporary access tokens and session IDs for request tracing and temporary identity marking.

Frequently asked questions

Is UUID Generator free to use?: Yes. UUID Generator on WoDeTool is completely free with no sign-up required. Open the page and start using it immediately.
Can I use UUID Generator for database design?: Use UUID as database primary keys in distributed databases to avoid ID conflicts in database sharding scenarios.
Can I use UUID Generator for business number generation?: Generate order IDs, serial numbers, work order numbers and device identifiers to ensure global uniqueness within the system.

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