[{"data":1,"prerenderedAt":484},["ShallowReactive",2],{"\u002Fblog\u002Fkdp-cover-size-and-spine-width-explained":3},{"id":4,"title":5,"body":6,"description":474,"extension":475,"meta":476,"navigation":479,"path":480,"seo":481,"stem":482,"__hash__":483},"content\u002Fblog\u002Fkdp-cover-size-and-spine-width-explained.md","KDP Cover Size and Spine Width Explained for First-Time Authors",{"type":7,"value":8,"toc":460},"minimark",[9,26,31,38,45,50,53,57,62,69,73,86,89,99,103,114,118,121,172,177,187,191,194,199,204,209,225,231,235,246,270,280,284,295,321,328,332,343,372,375,379,411,415,445],[10,11,12,13,17,18,21,22,25],"p",{},"Publishing your first paperback on Amazon KDP is exciting, until you reach the cover upload and see words like ",[14,15,16],"strong",{},"bleed",", ",[14,19,20],{},"trim"," and ",[14,23,24],{},"spine width",". Don't worry. Once you understand a few simple ideas, the cover size is just basic addition. This guide walks you through it step by step.",[27,28,30],"h3",{"id":29},"a-paperback-cover-is-one-big-picture","A Paperback Cover Is One Big Picture",[10,32,33,34,37],{},"When you hold a paperback, the back cover, spine and front cover look like separate parts. But they are ",[14,35,36],{},"printed as one long sheet"," and then wrapped around the pages.",[10,39,40,41,44],{},"So KDP doesn't want three files. It wants ",[14,42,43],{},"one PDF page",", laid out left to right like this:",[10,46,47],{},[14,48,49],{},"Back cover → Spine → Front cover",[10,51,52],{},"Your job is to make that one wide image the exact right size.",[27,54,56],{"id":55},"four-words-you-need-to-know","Four Words You Need to Know",[58,59,61],"h4",{"id":60},"trim-size","Trim size",[10,63,64,65,68],{},"The ",[14,66,67],{},"trim size"," is the size of your finished book, like 6\" × 9\" or 5\" × 8\". You pick this when you set up your paperback in KDP.",[58,70,72],{"id":71},"spine","Spine",[10,74,64,75,77,78,81,82,85],{},[14,76,71],{}," is the narrow strip the pages are glued into. Its width depends on ",[14,79,80],{},"how many pages"," your book has and ",[14,83,84],{},"what paper"," it's printed on. More pages means a thicker spine.",[58,87,88],{"id":16},"Bleed",[10,90,91,92,94,95,98],{},"Printers can't print perfectly to the edge of the paper. So they print slightly larger, then cut the extra off. That extra strip is called ",[14,93,16],{},". KDP's bleed is ",[14,96,97],{},"0.125 inches (3.2 mm)"," on the top, bottom and outside edges. Your background color or image should stretch into the bleed so no white edges show after cutting.",[58,100,102],{"id":101},"safe-area","Safe area",[10,104,105,106,109,110,113],{},"Cutting and folding isn't 100% exact either. Keep your title, author name and other text ",[14,107,108],{},"at least 0.125 inches inside the trim lines"," so nothing important gets cut off. That inner zone is the ",[14,111,112],{},"safe area",".",[27,115,117],{"id":116},"step-1-work-out-your-spine-width","Step 1: Work Out Your Spine Width",[10,119,120],{},"KDP gives an exact thickness for each page:",[122,123,124,137],"table",{},[125,126,127],"thead",{},[128,129,130,134],"tr",{},[131,132,133],"th",{},"Ink and paper",[131,135,136],{},"Spine width per page",[138,139,140,149,157,164],"tbody",{},[128,141,142,146],{},[143,144,145],"td",{},"Black & white ink, white paper",[143,147,148],{},"0.002252\"",[128,150,151,154],{},[143,152,153],{},"Black & white ink, cream paper",[143,155,156],{},"0.0025\"",[128,158,159,162],{},[143,160,161],{},"Standard color ink, white paper",[143,163,148],{},[128,165,166,169],{},[143,167,168],{},"Premium color ink, white paper",[143,170,171],{},"0.002347\"",[10,173,174],{},[14,175,176],{},"Spine width = number of pages × page thickness",[10,178,179,183,184,113],{},[180,181,182],"em",{},"Example:"," a 300-page book on white paper: 300 × 0.002252 = ",[14,185,186],{},"0.676 inches",[27,188,190],{"id":189},"step-2-add-everything-together","Step 2: Add Everything Together",[10,192,193],{},"Now add up the pieces from left to right:",[10,195,196],{},[14,197,198],{},"Cover width = bleed + back cover + spine + front cover + bleed",[10,200,201],{},[14,202,203],{},"Cover height = bleed + book height + bleed",[10,205,206,208],{},[180,207,182],{}," a 6\" × 9\" book with 300 pages on white paper:",[210,211,212,219],"ul",{},[213,214,215,216],"li",{},"Width: 0.125 + 6 + 0.676 + 6 + 0.125 = ",[14,217,218],{},"12.926 inches",[213,220,221,222],{},"Height: 0.125 + 9 + 0.125 = ",[14,223,224],{},"9.25 inches",[10,226,227,228,113],{},"If you design in pixels (in Canva or Photoshop), multiply by 300 for print quality: ",[14,229,230],{},"3,878 × 2,775 pixels",[27,232,234],{"id":233},"step-3-let-a-calculator-do-it-for-you","Step 3: Let a Calculator Do It for You",[10,236,237,238,245],{},"Doing the math by hand is a good way to understand it, but a calculator avoids typos. Fileverter's free ",[239,240,244],"a",{"className":241,"href":243},[242],"text-primary","\u002Ftools\u002Fpublishing\u002Fkdp-cover-calculator","KDP Cover Calculator"," does all of this instantly:",[247,248,249,254,265],"ol",{},[213,250,251,252,113],{},"Choose your ",[14,253,67],{},[213,255,256,257,260,261,264],{},"Type your ",[14,258,259],{},"page count",". Use the page count of your ",[180,262,263],{},"final"," formatted interior PDF.",[213,266,251,267,113],{},[14,268,269],{},"ink and paper",[10,271,272,273,276,277,113],{},"You'll immediately see your full cover size, spine width, pixel size at 300 DPI, and whether your book is thick enough for ",[14,274,275],{},"spine text",". KDP only allows text on the spine for books with ",[14,278,279],{},"at least 79 pages",[27,281,283],{"id":282},"step-4-download-a-template","Step 4: Download a Template",[10,285,286,287,290,291,294],{},"A template is a guide image you put on top of your design while you work. The calculator gives you one as a ",[14,288,289],{},"PDF"," or a transparent ",[14,292,293],{},"PNG"," (great for Canva). It shows:",[210,296,297,303,309,315],{},[213,298,299,302],{},[14,300,301],{},"Red band:"," the bleed that gets cut off.",[213,304,305,308],{},[14,306,307],{},"Blue lines:"," where the book is trimmed and where the spine folds.",[213,310,311,314],{},[14,312,313],{},"Green dashed lines:"," the safe area for text.",[213,316,317,320],{},[14,318,319],{},"White box:"," space on the back cover for the barcode.",[10,322,323,324,327],{},"Design your cover underneath, then ",[14,325,326],{},"hide or delete the template layer"," before you export. Anything left on it will be printed.",[27,329,331],{"id":330},"step-5-check-your-cover-before-you-upload","Step 5: Check Your Cover Before You Upload",[10,333,334,335,338,339,342],{},"KDP only shows problems after you upload and wait for its previewer. You can catch them first: upload your finished PDF to the ",[14,336,337],{},"cover check"," at the bottom of the ",[239,340,244],{"className":341,"href":243},[242],". It checks that:",[210,344,345,356,363,369],{},[213,346,347,348,351,352,355],{},"the cover is ",[14,349,350],{},"one page"," at the exact size, ",[14,353,354],{},"including bleed",";",[213,357,358,359,362],{},"all ",[14,360,361],{},"fonts are embedded"," in the PDF;",[213,364,365,366,355],{},"images are at least ",[14,367,368],{},"300 DPI",[213,370,371],{},"the file isn't password protected and isn't too large.",[10,373,374],{},"If the width is wrong, it even tells you which page count your file was made for. This is the most common beginner mistake: designing the cover first, then adding pages to the book later.",[27,376,378],{"id":377},"common-beginner-mistakes","Common Beginner Mistakes",[247,380,381,387,393,399,405],{},[213,382,383,386],{},[14,384,385],{},"Forgetting the bleed."," A cover sized exactly 12.676\" × 9\" (no bleed) will be rejected or printed with white edges.",[213,388,389,392],{},[14,390,391],{},"Changing the page count after designing the cover."," Every page changes the spine. Finish your interior first, then make the cover.",[213,394,395,398],{},[14,396,397],{},"Putting text too close to the edge."," Keep it inside the safe area.",[213,400,401,404],{},[14,402,403],{},"Using low-resolution images."," A photo that looks fine on screen can print blurry. Aim for 300 DPI.",[213,406,407,410],{},[14,408,409],{},"Exporting with the template still visible."," Hide the guide layer first.",[27,412,414],{"id":413},"summary","Summary",[210,416,417,424,429,434,442],{},[213,418,419,420,423],{},"A paperback cover is ",[14,421,422],{},"one image",": back, spine and front together.",[213,425,426],{},[14,427,428],{},"Spine width = pages × paper thickness.",[213,430,431],{},[14,432,433],{},"Cover size = bleed + back + spine + front + bleed.",[213,435,436,437,439,440,113],{},"Keep text in the ",[14,438,112],{}," and backgrounds in the ",[14,441,16],{},[213,443,444],{},"Check your PDF before uploading.",[10,446,447,448,453,454,459],{},"Ready to try it? Open the ",[239,449,452],{"className":450,"href":243},[242,451],"font-bold","free KDP Cover Calculator",". Publishing through IngramSpark too? Read our guide to the ",[239,455,458],{"className":456,"href":457},[242],"\u002Fblog\u002Fhow-to-make-an-ingramspark-cover-template","IngramSpark cover template",", because its spine widths are different.",{"title":461,"searchDepth":462,"depth":462,"links":463},"",2,[464,466,467,468,469,470,471,472,473],{"id":29,"depth":465,"text":30},3,{"id":55,"depth":465,"text":56},{"id":116,"depth":465,"text":117},{"id":189,"depth":465,"text":190},{"id":233,"depth":465,"text":234},{"id":282,"depth":465,"text":283},{"id":330,"depth":465,"text":331},{"id":377,"depth":465,"text":378},{"id":413,"depth":465,"text":414},"A beginner-friendly guide to Amazon KDP paperback covers: what bleed, trim and spine mean, how to calculate your cover size, and how to check your cover before uploading.","md",{"date":477,"slug":478},"2026-10-25","kdp-cover-size-and-spine-width-explained",true,"\u002Fblog\u002Fkdp-cover-size-and-spine-width-explained",{"title":5,"description":474},"blog\u002Fkdp-cover-size-and-spine-width-explained","Mbo3k57i2scoh7_p3b8uX9_3ZAWcU3hwH_n4Vj2JSKM",1792934425416]