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Lenovo UUID Tool

Normalize, validate, and convert Lenovo/SMBIOS system UUID formats. This tool can convert a standard UUID to SMBIOS/DMI raw bytes (and back), plus generate UUID v4 locally (no uploads).

Category: Developer · URL: /tools/lenovo-uuid-tool.html
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.
Keywords this page targets (natural cluster): lenovo uuid tool, lenovo system uuid converter, lenovo uuid byte order, smbios uuid converter, dmi uuid raw bytes to uuid, uuid to smbios bytes, smbios bytes to uuid, lenovo bios uuid format, uuid normalize lowercase, uuid validator online, uuid version and variant check, uuid v4 generator offline, convert 32 hex to uuid, guid to uuid format, uuid endianness swap, windows wmic uuid byte order, dmidecode uuid conversion, system uuid decode
Secondary intents covered: Convert a Lenovo/SMBIOS raw UUID (16 bytes) into a standard UUID string, Convert a standard UUID into SMBIOS/DMI raw bytes for firmware tools, Normalize UUIDs (remove braces, add hyphens, lowercase), Validate whether a pasted value is a UUID and spot obvious formatting issues, Check UUID version and variant (RFC 4122 vs other), Generate one or many UUID v4 values offline for testing, Batch-convert multiple UUIDs (one per line), Copy clean output for scripts, tickets, or inventory systems

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.