Amazon sellers & KDP authors

Free Amazon FBA and KDP seller calculators

Tools for Amazon sellers and self-published authors: FBA fees and profit per unit, PPC search terms worth keeping, aged-inventory surcharges, reimbursement claims, and KDP royalty reports turned into numbers you can act on.

Researching a first FBA product or a first book? The FBA and KDP royalty calculators show what each sale leaves you before you order stock or set a price.

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The fullest tools on this page, with the most worked questions behind them.

  1. Amazon FBA vs FBM Profit Calculator

    Free Amazon FBA vs FBM calculator: compare fulfillment paths after expected returns. Get net profit, max buy cost, the return rate that wipes the listing, when inbound placement…

    24 questions answered

  2. KDP royalty calculator: KU vs going wide

    See what a Kindle book keeps on KDP exclusive (paid sales plus Kindle Unlimited page reads) versus going wide. Paperback print cost, 70% vs 35% ebook, and Ingram wholesale are…

    5 questions answered

  3. Amazon Inventory Loader Check

    Free Amazon Seller Central inventory file checker: finds comma or UTF-16 files, UPCs that lost a leading zero, bad UPC and EAN check digits, scientific-notation SKUs, bad prices…

  4. Amazon PPC Search Term Analyzer

    Free Amazon PPC search term analyzer: drop in your Sponsored Products search term report CSV and see wasted ad spend graded by evidence, negative keyword candidates, terms to…

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Worked answers written beside the calculators Amazon sellers and KDP authors use.

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