KDP Tools
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    Free KDP toolkit

    20 free Amazon KDP calculators
    for serious self-publishers.

    Estimate royalties, printing cost, ad ROI and break-even in seconds. Every tool uses Amazon's official KDP formulas. No signup, no paywall — just math that works.

    Royalty

    KDP Royalty

    Estimate your KDP earnings across eBook, paperback and hardcover.

    Kindle Royalty

    Compare 35% vs 70% Kindle royalty plans instantly.

    Paperback

    60% paperback royalty minus printing cost, instantly.

    Hardcover

    Estimate KDP hardcover earnings after print cost.

    Currency

    Convert KDP royalties across all marketplaces.

    Costs

    Printing Cost

    Amazon's exact print cost for any page count.

    Page Count

    Convert manuscript word count to printed pages.

    Publishing Cost

    Total cash needed to launch a KDP book.

    Pricing

    Book Pricing

    Find the list price that maximizes royalty + sales.

    Profit Margin

    True profit after print, ads and editing costs.

    AI Optimizer

    Find the price that maximizes total royalty.

    Forecast

    Income Projection

    Project monthly + annual KDP income with growth.

    Break-Even

    How many books until you recover launch costs.

    BSR Estimator

    Estimate daily book sales from Amazon BSR.

    Niche

    Score a niche before you commit a year to it.

    Revenue Forecast

    12-month gross revenue projection.

    Ads

    Ads ROI

    True return on Amazon Ads spend.

    ACoS

    Calculate Advertising Cost of Sale for any campaign.

    Ads Profit

    Per-campaign net profit after every cost.

    Keyword ROI

    Per-keyword profit on Amazon Ads.