Book Cover Estimator.
AI-generated estimates. No guarantee of accuracy. We assume no liability for decisions based on these results. Independent verification is recommended.
Designing a book cover? You need the exact spine width to fit your text properly. This calculator estimates thickness based on standard publishing paper weights (Amazon KDP / IngramSpark standards).
AI-generated estimates. No guarantee of accuracy. We assume no liability for decisions based on these results. Independent verification is recommended.