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UUID Generator

Generate RFC-compliant UUIDs instantly for databases, APIs, and distributed systems.

UUID Generator Tool

Generate RFC-compliant UUIDs instantly for databases, APIs, and distributed systems. Supports UUID versions v1 (time-based), v4 (random), and v7 (time-ordered). All generation happens client-side for maximum privacy.

UUID Configuration

Random UUID (cryptographically secure)
Time-based UUID (timestamp + MAC address)
Time-ordered UUID (modern, sortable)

Generate 1 to 100 UUIDs at once

Generated UUIDs

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What is UUID Generator?

UUID Generator is a free online tool for creating RFC 4122 UUIDs you can use as unique IDs across services and systems. It is designed for practical dev workflows: generate one ID or a whole batch with the exact output format you need.

How to use UUID Generator

  1. Select a UUID version (v4, v1, or v7) based on your use case.
  2. Choose quantity (up to 100) and output options like hyphens, uppercase, braces, or URN.
  3. Optional: pick an output format (one per line, comma-separated, or JSON array).
  4. Click Generate UUIDs, then copy or clear the list.

When to use UUID Generator

  • When you need request IDs or correlation IDs for tracing across microservices.
  • When generating identifiers for API resources, events, logs, or background jobs.
  • When preparing UUID primary keys for databases or seed data scripts.
  • When you want time-ordered IDs (v7) to help with some indexing patterns.

Why use GitOpenTools?

GitOpenTools gives you fast developer utilities without extra setup. Generate UUIDs directly in the browser with no installation and no account. It is a quick way to produce clean, shareable identifiers and keep your workflow moving.

FAQ

Is this UUID generator RFC 4122 compliant?

Yes. The generated UUIDs follow the RFC 4122 format and work across common systems and libraries.

Which UUID version should I pick: v4, v1, or v7?

v4 is a good default. v1 is time-based. v7 is time-ordered and can be helpful if you want sortable IDs by creation time.

Can I generate UUIDs in bulk and export them?

Yes. Generate up to 100 UUIDs and output them as lines, comma-separated text, or a JSON array.

Is UUID generation done in the browser?

Yes. UUIDs are generated client-side, which keeps the experience fast and simple.