How many pixels should my KDP cover be?

Use the provider-controlled final specification

Book dimensions depend on final page count, trim, paper/interior choice and current provider rules. Recalculate after any change that affects pagination or cover geometry.

Apply the answer to this specific question

First calculate the exact physical full-cover dimensions from trim, page count and paper type, then multiply each dimension by the raster PPI used for your artwork. The practical consequence should be checked with KDP Cover Pixels Calculator when your own dimensions, page count, cost or production values differ from the example implied by the question.

What commonly changes the result

For “How many pixels should my KDP cover be?”, the most important variables are the ones represented by the linked calculator and any provider-controlled specification. A correct arithmetic result can still be unsuitable if the source dimensions, category, page yield, trim, bleed, margin or production method were assumed incorrectly.

A better verification workflow

For How many pixels should my KDP cover be?, record the source measurement or controlling specification first, then run the real job values through kdp cover pixels. Keep the result with the job notes, compare it with the physical file or material, and recheck any provider-controlled rule immediately before production or upload.

Practical answer

First calculate the exact physical full-cover dimensions from trim, page count and paper type, then multiply each dimension by the raster PPI used for your artwork.

When the decision affects a paid print run, book upload, client order or expensive material, keep the calculation with the job notes and verify any external specification again immediately before production.

Sources