Free tools · no signup
Four free KDP tools. Use them right here.
The same checks and math the paid pipeline runs — free, in your browser, no account needed.
Spine & cover calculator
Exact cover canvas for any book.
Open the free tool →Royalty calculator
What you earn per sale, after printing.
Open the free tool →Niche finder (free)
Top 10 books for any keyword, scored.
Open the free tool →Fix my rejected file
Find out why KDP said no — rule by rule.
Open the free tool →New to Amazon KDP? The Academy walks you through every step, in plain English →
Want the book, not just the math?
These tools stay free. A plan is built from what you'll make — from $14/mo, with a 14-day money-back on your first payment.