FastUUID - Online UUID Generator Tool

    UUID v6 Generator

    Generate reordered time-based UUIDs for v1 migration workflows.

    UUID Generator

    Choose an identifier type. Generate and copy it locally.

    Your identifier appears here after the page loads.

    Reordered time-based UUID for v1 migration. Prefer v7 for new time-ordered identifiers.

    UUID v6 reorders the timestamp fields of v1 to improve sorting. This generator uses a random node value and does not read your hardware MAC address.

    UUID v6 or v7?

    Use v6 when compatibility with a v1-oriented design is important. For a new system needing time-ordered identifiers, generally prefer v7, which uses Unix milliseconds.

    Neither format proves uniqueness or creation time. Database performance depends on the schema and workload; benchmark your actual system.

    Frequently asked questions

    Is UUID v6 deprecated?
    No. RFC 9562 defines UUID v6. It is primarily intended for systems migrating from UUID v1; v7 is generally preferred for new designs.