Are these calculators free?

Yes, with no sign-in and nothing stored.

Where do the figures come from?

Royalties and printing costs come from KDP's published help pages, copied into a dated data file. Sales estimates come from a published third-party model and are labelled as estimates.

Free KDP Calculators

Three small tools for self-published authors. Each does one job, runs in your browser and never reads your Amazon pages.

Estimate only. Not affiliated with, endorsed by or sponsored by Amazon.

KDP Royalty Calculator

What one sale pays you, for a Kindle eBook (35% or 70%) or a paperback.

Kindle BSR to Sales Calculator

A rough range of eBook sales a day for a Best Sellers Rank you type.

KDP Price Calculator

Your royalty at every list price, and the lowest price that reaches a target.

Chrome extension

Get the free Chrome extension: the royalty, rank and price calculators, in Chrome.

Pro ($19 one-time, US buyers) adds marketplace royalty, price ladder, ads break-even and CSV export.

FAQ

Are these calculators free?: Yes, with no sign-in and nothing stored.
Where do the figures come from?: Royalties and printing costs come from KDP's published help pages, copied into a dated data file. Sales estimates come from a published third-party model and are labelled as estimates.