▱Print Ready Toolsby PixelFit

KDP paperback cover size & spine calculator

Enter trim size, page count, paper type, and bleed. Get cover file size, spine width, barcode safe zone, and pixel canvas before uploading to KDP.

Independent planning toolNo file uploadCheck final file in KDP Previewer

1. Enter your book specs

Min 24 - Max 828 pages · KDP paperback common trim · B&W white

2. Build your cover canvas

Spine width0.270 in6.90 mm
Cover file size incl. bleed12.52 × 9.25 inTrim spread: 12.27 × 9 in
Pixel canvas3756 × 2775 px@ 300 PPI
Barcode safe zone2 × 1.2 in5.08 × 3.05 cm
Bleed (0.125 in)Trim lineSafe zoneBarcode safe zone
Barcodesafe zoneBack cover6 × 9 inSpine0.270 inFront cover6 × 9 inTrim spread 12.27 in · file width 12.52 in incl. bleed9.25 in

Calculated 6 × 9 in paperback with 120 pages, white paper, 0.125 in bleed.

Your cover file details

  • Cover file incl. bleed: 12.52 × 9.25 in.
  • Trim spread: 12.27 × 9 in.
  • At 300 PPI, use 3756 × 2775 px.
  • Back and front cover: 6 × 9 in each.
  • Layout order: Back cover | Spine | Front cover. Barcode zone: lower-right of the back cover.
  • Spine 0.270 in · Bleed 0.125 in · Final check in KDP Previewer.
  • Spine uses KDP paperback multipliers: B&W white/standard color 0.002252, B&W cream 0.0025, premium color 0.002347.

Quick actions

Common KDP setups

Load specs instantly.

Explore more tools

KDP workflow

KDP Cover Size & Spine CalculatorCalculate paperback cover size, spine width, bleed, barcode safe zone and pixel canvas.KDP Interior Bleed CalculatorCalculate KDP manuscript page size with and without bleed.KDP Cover Setup ChecklistStep-by-step cover file checklist.

Print sizing

Print Size CalculatorConvert pixels to inches, centimetres, millimetres and required pixels by DPI.DPI CalculatorCalculate effective DPI, required pixels and maximum print size for artwork.Image Print Quality CheckerCheck a local image’s pixel dimensions against a target print size.Bleed & Safe Zone CalculatorCalculate trim, full bleed canvas, safe area and pixels.

Marketplace

Etsy Printable Size Pack CalculatorGenerate ratio pack sizes and buyer instruction text.Etsy Buyer Instruction TemplateCopyable buyer instructions for digital printable files.

Image checking

PixelFit Image Size ToolsAspect ratio, DPI, A4 pixels and social safe-zone overlays for local image checks.Image Print Quality CheckerCheck a local image’s pixel dimensions against a target print size.

Print readiness checklist

Cover file is one full spread.Background extends to bleed.Text stays inside safe zone.Barcode area is clear.Spine text fits spine width.Final PDF checked in KDP Previewer.

Preset cover sizes

6 × 9, 120 pages

5.5 × 8.5, 200 pages

8.5 × 11, 120-page workbook

FAQ

How do I calculate KDP spine width?
Choose trim size, page count, interior type, and paper type. The calculator estimates spine width from page count and the current KDP paperback spine multipliers for the selected paper option.

Does KDP cover size include bleed?
The cover file size includes bleed on the outside edges. The calculator also shows the trim spread before bleed so you can compare both values.

What pixel size should a KDP cover be?
The pixel canvas is the cover file size multiplied by the selected PPI, commonly 300 PPI for print planning.

Sources and limits

This planning calculator estimates cover setup dimensions. Always verify the final file in KDP Previewer. This tool is independent and not affiliated with Amazon.

Learn more about formulas and limits