UUID Generator

UUID v4 values are commonly used when you need random identifiers without depending on a central counter. UUID v7 values are useful when you want sortable IDs that still behave like standard UUIDs. Both work well for logs, event streams, request tracing, seeded sample data, and many application records.

A browser-based UUID Generator is useful when you want a quick batch of IDs without opening a terminal, writing a script, or calling an external service.

Lowercase hyphenated UUIDs are the most common default and are easy to compare against application logs and API responses.

Uppercase output can help when your team prefers visual consistency in spreadsheets, documents, or copied snippets.

Removing hyphens creates a compact 32-character form that can be useful when you need an identifier without separators.

UUID v4 is random-first and widely supported, which makes it a practical default for many APIs, test fixtures, and generic identifiers. UUID v7 keeps the standard UUID shape but adds time-ordered behavior that can be more useful when you want identifiers that sort more naturally by creation time.

If your main goal is broad compatibility, v4 is often enough. If your workflow benefits from more chronological ordering in logs, queues, or some database patterns, v7 can be a better fit.

Generating multiple UUIDs at once is useful when seeding local databases, preparing mock API payloads, loading spreadsheet templates, or creating sample datasets for tests and demos.

Because this tool supports batch generation, version switching, and output formatting together, it is faster to prepare a copy-ready block of IDs without writing a custom script for small day-to-day tasks.