KDP cover size for a 337-page 6×9 cream hardcover

Enter your details below and this free KDP cover calculator returns the exact spine width, full-cover dimensions, and a safe-zone diagram for a 337-page 6 × 9 in cream hardcover — then download a print-ready template. 6 × 9 in is the most common size on KDP — the default for trade paperbacks, nonfiction, and most novels. Case-laminate hardcover uses the 0.002347 in/page multiplier and adds a 0.4 in hinge each side of the spine plus a 0.51 in wrap on every edge, so its full cover runs larger than a paperback at the same trim. Adjust any field to recompute live, or use it as a hardcover spine-width calculator for any page count.

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