Search Ctrl K
Home / Tools
THE FEUTEX TOOLKIT

Lenovo UUID Tool

Lenovo UUID tool to normalize and validate UUIDs, convert canonical UUID ↔ SMBIOS/DMI raw bytes (byte-order swapped), analyze version/variant, and generate UUID v4 offline in your browser.

Tip: SMBIOS/DMI stores the first 3 UUID fields in little-endian, so the raw 16-byte hex may look “reordered” compared to the canonical UUID string.
Input (one per line)
Output
Output is local-only; no network requests.
What input formats are accepted?
  • UUID: 8-4-4-4-12 (with hyphens), or 32 hex characters, optional braces.
  • SMBIOS/DMI raw: 16 bytes as 32 hex characters (spaces/colons/dashes allowed).
Related tools:
Privacy: runs locally in your browser. No uploads, no tracking scripts.

How to use

Pick a mode, paste one or more values (one per line), then run the conversion.

  1. Select a mode (Normalize, UUID → SMBIOS bytes, SMBIOS bytes → UUID, Analyze, or Auto).
  2. Paste values into the input box (UUIDs or 16-byte hex).
  3. Click Process to convert/validate, or Generate v4 to create new UUIDs.
  4. Use Copy output to copy results.

FAQ

What makes this a “Lenovo UUID” tool?

Lenovo systems typically expose the system UUID via SMBIOS/DMI, where the first 3 fields are stored in little-endian; this tool converts between that raw byte order and the canonical UUID string.

What is “SMBIOS/DMI raw bytes” format?

It’s the 16-byte UUID value shown as 32 hex characters (sometimes spaced), using SMBIOS byte ordering (first 4 bytes, next 2, next 2 reversed).

Can I paste multiple UUIDs at once?

Yes—paste one value per line and the output will be one result per line.

Does this tool check if a UUID is real/unique?

No; it validates and formats the string/bytes. Uniqueness can’t be proven from the value alone.

Is UUID v4 generation done offline?

Yes; it uses your browser’s local random generator (crypto.getRandomValues when available) and doesn’t send data anywhere.

Why do some UUIDs fail the RFC 4122 variant check?

Some firmware/vendors may use non-RFC variants or placeholder values; the tool will still normalize/convert, and “Analyze” will show the detected variant.

Can I convert a UUID without hyphens?

Yes; 32 hex characters are accepted and will be normalized into the standard 8-4-4-4-12 format.

Continue your workflow

Browse related tools by task. Use the improved core tools for a consistent workspace with file import, downloads and clear validation errors.

Security tools →Explore all tools →