KDP Spine & Formatting Calculator
ExtensionTools
Overview
Free spine width, margin, gutter, and bleed calculator for Amazon KDP paperback books. Get exact specs instantly.
This extension calculates spine width, margins, gutter, and bleed specifications for Amazon KDP paperback books based on page count and trim settings.
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Details
- Version1.0.0
- UpdatedJuly 20, 2026
- Offered byPrinceLucie
- Size9.32KiB
- LanguagesEnglish
- Developer
Email
123Jzargo99@gmail.com - Non-traderThis developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.
Privacy
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This developer declares that your data is
- Not being sold to third parties, outside of the approved use cases
- Not being used or transferred for purposes that are unrelated to the item's core functionality
- Not being used or transferred to determine creditworthiness or for lending purposes