Resources
Help center & resources
Everything you need to publish like a pro — calculators, guides, and the full help center (120 articles across 12 topics).
Royalty calculator
Estimate your earnings by price, store mix, and volume.
Open →Book royalty calculator
Plan-level royalty math for Chiify paid tiers.
Open →Print cost calculator
Estimate paperback print economics before you publish.
Open →BISAC & publishing categories
Browse every category Chiify accepts — and what we don’t.
Open →ISBN guide
What an ISBN is, when you need one, and how to get one from our Bowker pool.
Open →EPUB formatting
Conversion, validation, and lifetime warranty for technical retailer rejections.
Open →Accessibility & EAA
WCAG 2.2 / European Accessibility Act — what changed in 2025.
Open →Content guidelines
What you can publish, AI disclosure, and rights expectations.
Open →Aggregator commissions
How commission-only aggregators take a cut — and how flat plans compare.
Open →Popular help articles
From the Chiify help center — same articles Google already indexes.
Start distributing your books worldwide
Keep 100% of your royalties — no exclusivity, no setup fees.