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One calculator for every KDP cover
Paperback with bleed
Spine from KDP’s paper thickness and the full cover with 0.125″ bleed, for all 16 paperback trim sizes.
Hardcover with wrap
Boards, 0.591″ wrap, 0.394″ hinge and spine for every hardcover trim — matching KDP’s own cover calculator.
Kindle eBook cover check
The recommended 1600 × 2560 px — and a check of your cover image’s size, ratio, format and file size, right in your browser.
Cover templates
Download a print template with bleed or wrap, spine folds, hinges and safe zones as SVG or PNG at 300 DPI.
Inches, mm and pixels
Every size in inches or millimeters, plus the pixel size at 300 DPI to set up Canva, Affinity or Photoshop.
Official KDP rules
Paper thickness, bleed, wrap, hinge and eBook limits come from KDP’s help pages and cover calculator.
How to get your KDP cover size
- 1Choose the format: paperback, hardcover or Kindle eBook.
- 2For print, pick interior, trim size and page count; for eBook, check your cover image.
- 3Read the full cover size — in inches, millimeters and pixels at 300 DPI.
- 4Download the template and design inside the safe zones.
KDP cover size FAQ
What size is a KDP paperback cover?
Back cover + spine + front cover, plus 0.125″ bleed on the top, bottom and outside edges. A 6×9 paperback with a 0.75″ spine needs a 13 × 9.25″ cover (3900 × 2775 px at 300 DPI).
How is a KDP hardcover cover different?
It wraps around boards: each board is the trim size plus 5 mm in width and 6 mm in height, with a 15 mm (0.591″) wrap on every edge and a 10 mm (0.394″) hinge beside the spine. A 6×9 hardcover with 100 pages needs a 13.989 × 10.417″ cover.
How wide is a KDP hardcover spine?
Page count × paper thickness (0.002252″ white, 0.0025″ cream, 0.002347″ premium color) plus 4.8 mm for the boards — a 100-page hardcover on white paper has a 0.414″ spine.
What size should a Kindle eBook cover be?
KDP recommends 1600 × 2560 px (height : width = 1.6 : 1). The longest side needs at least 500 px, no side may exceed 10,000 px and the file must be under 50 MB — JPEG is preferred.
Which trim sizes and page counts can be hardcovers?
5.5×8.5, 6×9, 6.14×9.21, 7×10 and 8.25×11, with black ink on white or cream paper or premium color, from 76 to 550 pages (KDP’s cover calculator).
Where does the barcode go?
KDP places it in the lower right of the back cover if you do not add your own; your own barcode must be 2″ × 1.2″ at 300 DPI. Keep that corner free of text.
More free tools
Free Sudoku Generator
Printable 4×4, 6×6 and 9×9 sudoku in Easy, Medium or Hard, with an answer key.
Free Maze Generator
Classic mazes and mazes for kids, freshly generated for every PDF, with solutions.
Free Word Scramble Generator
Word scramble worksheets from five themes or your own spelling words, with answers.
Free Missing Vowels Generator
Fill-in-the-vowels worksheets from five themes or your own spelling words, each word with one right answer.
Free Cryptogram Generator
Cryptograms from your own quotes or themed word lists, each checked to have exactly one solution.
Free Wordoku Generator
Letter sudoku where one row spells a hidden word — 9×9 or small grids for kids, with your own words and answers.
Free Word Search Generator
Word search puzzles from five themes or your own word list, for kids and adults, with answers.
Free Duplicate Word Remover
Remove duplicate words from any list, strip accents and see how often each word repeated.
Free Word Counter
Count words, characters, sentences and chapters and estimate your book’s page count for KDP.
Free QR Code Generator
Make QR codes for links, text and images — with your colors, logo and a caption, one by one or in bulk.
Free KDP Royalty Calculator
See your royalty per copy on Amazon KDP — printing cost, the 60 % price point, Expanded Distribution and Kindle 35 % vs 70 %.
Free KDP Profit Calculator
Your real KDP profit: royalties minus ads, software and one-time costs — with break-even and the ACoS your ads can afford.
Free KDP Spine Width Calculator
Exact spine width and full cover size with bleed for any KDP paperback — plus a cover template to download.
Build the whole book — inside and cover
Wisdom Effect builds whole Sudoku, Wordoku, Word Search, Maze, Word Scramble and Missing Vowels books: interiors with KDP-safe margins, gutters and answer keys, and a cover sized to the page count — free trial with 25 credits, no credit card.