COVERSPEC · PROFESSIONAL BROWSER TOOL
Know the spine before you design.
Calculate KDP paperback spine and full-cover dimensions from trim size, page count, and paper type, then print a spec sheet.
Open the workbench ↓01 · WORKBENCH
Inputs and files stay on this device
02 · CAPABILITIES
Built deeply for one narrow workflow
Inches and millimeters
Diagram and spec sheet
Formulas and spine factors follow KDP's current public help. Always verify current requirements with KDP's official calculator before upload.
Read the source ↗NO ACCOUNT · LOCAL PROCESSING · EXPORTABLE