Free Amazon KDP tools for smart self-publishers
Calculators, estimators, and search tools built to help you calculate exact royalties, size book spines, find low-competition categories, and uncover profitable book keywords.
KDP Royalty Calculator
Calculate real-time royalties, printing costs, and net author earnings across Kindle eBook, paperback, hardcover, and audiobook formats.
BSR to Sales Estimator
Convert any Amazon Best Sellers Rank (BSR) into estimated daily and monthly book sales using calibrated sales-velocity curves.
KDP Category Finder
Search thousands of Amazon KDP categories to discover low-competition niches, check sales required for #1, and pick the perfect browse paths.
KDP Keyword Checker
Check estimated Amazon search volume, total competing titles, average book price, and competitive difficulty for any book keyword.
KDP Spine Width Calculator
Calculate exact spine width and full cover template dimensions (including bleed and safety margins) for Amazon KDP paperbacks and hardcovers.
Book Page Count Estimator
Convert your manuscript word count into estimated printed book pages based on genre standards, trim sizes, and font formatting.
Book Pricing Calculator
Find the optimal pricing sweet spot for your Kindle eBook, paperback, and hardcover to maximize reader sales velocity and author royalties.
Book Title Generator
Generate keyword-optimized, high-converting book titles and subtitles tailored for Amazon search algorithms and bestselling genre frameworks.
Book Description Generator
Craft persuasive, high-converting Amazon book descriptions formatted with clean, KDP-compliant HTML tags that catch reader eyes.
KDP 7-Slot Keyword Export Formatter
Clean, deduplicate, and format any list of keywords into Amazon KDP's 7 backend slots (under 50 characters each) with instant CSV and AMS ads export.
Transparent KDP Book Revenue Calculator
Estimate daily and monthly sales, gross revenue, printing deductions, and net author royalties with fully visible mathematical formulas and confidence ranges.
KDP Listing Audit & Gap Checker
Scan your book title, subtitle, and description for Amazon search optimization gaps, low-demand category risks, and character limit compliance.
KDP Tool Total Cost Comparator
Compare 1-year and 3-year total costs across KDP software alternatives. Transparent pricing checked live on 10 Nov 2026 with no hidden lock-in.
100% Free First Use
No credit card, no sign-up wall. Test inputs and calculate formulas immediately.
Official KDP Formulas
Updated for 2026 Amazon printing costs, royalty thresholds, and spine factors.
Transparent Estimates
Estimates clearly labelled as estimates based on calibrated rank curves per ops#884.
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