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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.

    How the Amazon KDP royalty formula actually works

    Every Amazon KDP calculator on this page runs the same math Amazon uses at payout, so it helps to know the formula.

    Kindle eBooks pay either 35% or 70% of your list price: the 70% plan applies only between $2.99 and $9.99 in the US and subtracts a delivery fee of about $0.15 per megabyte before your royalty is figured.

    Paperback and hardcover both pay a flat 60% of list price minus a printing cost.

    That print cost is a fixed per-book charge (roughly $1.00 paperback, $6.80 hardcover) plus a per-page charge that depends on your interior — about 1.2 cents for black-and-white, 6.5 cents for premium color.

    So a 250-page black-and-white paperback at $12.99 earns 60% × $12.99 minus roughly $3.40, or about $4.40. The Amazon KDP Royalty Calculator applies this instantly across all three formats and every marketplace.

    Chaining the calculators from manuscript to profit

    These tools are built to work in sequence, not in isolation.

    Start with the Page Count Calculator to estimate how your word count and trim size translate into printed pages, then feed that page count into the KDP Printing Cost Calculator to see Amazon's exact per-book print charge.

    From there, the Book Pricing Calculator back-solves the list price you need to hit a target royalty per copy.

    Royalty is not the same as take-home pay, though, which is where the KDP Profit Margin Calculator earns its place: it subtracts print, editing, cover design and per-sale ad cost to reveal your true net.

    If you run Amazon Ads, the KDP Ads ROI Calculator ties it together by turning spend and ACoS into profit per book.

    Authors weighing a niche can also use the BSR Sales Estimator to convert a competitor's Best Sellers Rank into a rough daily sales figure before committing.

    Who these tools are for, and a note on accuracy

    This hub is built for indie authors, low-content publishers and small presses who publish direct through KDP and need fast, format-aware answers before hitting publish —

    whether you are pricing a first novel, modeling a picture book's premium-color economics, or deciding if an ad campaign is bleeding money. Every result here is an estimate produced with Amazon's published royalty and printing formulas and current US-store figures.

    Real payouts move with live delivery fees, daily exchange rates, marketplace-specific minimum prices and your tax jurisdiction, so treat these numbers as planning figures, not guarantees.

    Always confirm the final royalty and print cost inside your live KDP dashboard on the pricing page before you publish or reprice.

    Frequently asked questions

    What royalty rate does Amazon KDP pay?

    Kindle eBooks earn 35% or 70% of list price, with the 70% plan limited to prices between $2.99 and $9.99 in the US and reduced by a small per-megabyte delivery fee. Paperback and hardcover both pay a flat 60% of list price minus the printing cost.

    How much does KDP charge to print a book?

    Printing cost is a fixed per-book charge plus a per-page charge. In the US store, paperback runs about $1.00 fixed plus roughly 1.2 cents per black-and-white page, so a 250-page novel prints for about $3.40. Hardcover adds a higher fixed charge of around $6.80 for the case binding.

    How do I price a KDP book for profit?

    Decide the royalty you want per copy, then work backward. For print, list price equals your target royalty plus printing cost, divided by 0.60. A good rule of thumb is to keep at least $2.00 royalty per paperback, which usually means pricing a standard black-and-white novel at $9.99 to $12.99.

    What is BSR and what does it tell me about sales?

    BSR is the Amazon Best Sellers Rank, updated hourly to show how a title sells relative to everything else in the store. A lower number means more sales: roughly, a BSR near 1,000 can mean 100-plus sales a day, while 100,000 is closer to one a day. It is an estimate, since the exact BSR-to-sales curve shifts by category and season.

    What is a good ACoS for Amazon KDP ads?

    ACoS is ad spend divided by ad-attributed sales, so lower is better. Your break-even ACoS roughly equals your royalty percentage minus print cost as a share of price — often 25% to 35% for paperback. Aim below that for steady-state profit, though launch campaigns can run higher temporarily to build sales rank and reviews.