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Free KDP Calculators

Every calculator built on Amazon's 2025 KDP pricing tables. Royalty, sales, KENP, audiobook — all instant, all browser-only.

No account required Live calculations 2025 Amazon rates

Estimate paperback royalty across 12 marketplaces. Tiered printing costs, BW / Color, Amazon vs Expanded Distribution.

Convert your Amazon Best Sellers Rank into estimated daily, monthly and yearly sales — Kindle, Print and Audible curves.

Pages-read × KENP rate. Set the monthly rate yourself (typically $0.0040 – $0.0050 in 2024).

Kindle eBook royalty per sale. 70% lane vs 35% lane logic, file-size delivery fee, marketplace-specific rates.

Standalone printing-cost lookup. Useful when you just want to know "what will Amazon charge me to print this book?".

ACX exclusive (40%) vs non-exclusive (25%) royalty per sale. Royalty-share with producer modeled in.

Audible BSR → estimated daily/monthly sales. Calibrated against Audible market reports.

Done calculating? Start publishing.

Octozia generates the actual KDP interior — Sudoku, Word Search, Mazes, Math, Crossword, Number Fill, Word Scramble — in minutes.