Tools

Search and run the calculators. Most tools show “starter/estimate” values — confirm final specs with KDP templates.

Spine width (estimate)

Quick estimate from page count. Use official KDP cover templates for final numbers.

Interior page size (with bleed)

Adds the standard bleed size used for KDP interior layout.

Full cover size (wrap)

Computes total cover width/height using trim + spine + bleed.

Minimum margins (starter)

Gives a conservative starter margin set. Always confirm the inside margin requirements in KDP.

KDP margin rules

Print royalty & minimum list price

Paste your printing cost from the official KDP royalty calculator, then estimate royalty and minimum list price.

Printing costs vary by marketplace, trim size, ink, and page count.

eBook royalty (simple)

Estimate royalty using your chosen rate and an optional delivery fee.

Accuracy note

KDP requirements and costs can vary by marketplace, trim size, page count, ink type, and other options. Use these tools to plan quickly, then confirm final templates and costs in KDP.