PRIVACY & LIMITATIONS

Book dimensions stay local. Calculate before you design.

Trim dimensions, page count, interior type, and calculated results are handled only on the current page. CoverSpec does not receive manuscripts, upload covers, connect to a KDP account, or read design files.

Design starting point, not upload approval

The tool calculates spine width as the selected paper factor × page count and adds 0.125 inches of bleed to the outer left/right and top/bottom edges; it warns against spine text at 79 pages or fewer. It does not calculate interior creep, hardcover cases, flaps, barcodes, safe zones, print tolerances, or later platform-rule changes. Paper factors and eligibility can change, so verify again with KDP's official cover calculator and current help before submission.

No manuscript is uploaded here

The page does not store title, author, cover art, or manuscript text because it never asks for them. Refreshing or closing discards current inputs. Print opens the browser print dialog; the TXT download contains only dimensions, page count, spine, bleed, and the official verification link. The report studio and optional checkpoints can save the visible dimension summary locally in the browser, without manuscripts or images.

Advertising and local preferences

This page uses Google AdSense Auto Ads. Google may use cookies or similar technologies under its policies. .miluland.com domain cookies sync language, theme, high contrast, a six-item recent-tools list, and up to 16 favorite tool IDs across MiluLand sites. These values never contain inputs, files, or results; the current site also keeps a local compatibility copy.

Local report studio

The report studio reads only the workbench’s currently visible result summary for local preview, Markdown copy, JSON download, printing, and a SHA-256 fingerprint. It never reads input controls or original files and is not persisted unless you choose to download it.

Optional local checkpoints

Only when you explicitly choose Save does the tool write the visible result summary, time, and optional short label to this site’s browser storage, up to five entries. Imported files and input-control contents are never stored; you can export, restore same-tool checkpoints, or clear them at any time. Imports are limited to 128KB and validate the tool, timestamp, summary, and label of up to 80 characters.