BOM Comparator

Upload two Bills of Materials (CSV or Excel). See what parts were added, removed, or changed by part number.

Once you've confirmed your parts list, generate labels for those parts with Barcode & QR Tools.

BOM A (previous)

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BOM B (current)

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Coming soon

AI-Powered Impact Analysis

This compares by exact part number match today. A paid tier is planned that takes the changes found here and reasons about what they likely affect downstream, related assemblies, cost, and supplier or lead-time risk, instead of leaving that read on you.

FAQ

Is this really free?

Yes, completely, no limit. Comparison runs locally, no AI involved.

Is my data stored?

No. Your BOM files (CSV or Excel) are parsed in memory to produce the comparison, then discarded.

What are the risks?

Matching is by exact part number, so typos or reformatted part numbers between the two files won't be recognized as the same part. If a part number repeats within one file, only one occurrence is currently counted, a fix (matching by occurrence or find-number instead of part number alone) is planned. Worth knowing if you're relying on this for quantity accuracy today.

What are the limits?

15MB, CSV, XLSX, XLSM, or XLS.