KDP Cover Size Calculator: Trim, Bleed & Spine Width
Calculate KDP cover size, trim, bleed, and spine width for paperback or hardcover books, then open the exact layout in KDP Cover Creator.
Last updated: 2025-12-27
Pre-sized cover layout with trim, bleed, and spine guides.
Use the KDP book size calculator
Results
Spine
0.450"
11.43 mm
Width
12.700"
322.58 mm
Height
9.250"
234.95 mm
| Bleed | 0.125 in |
| Safe zone | 0.125 in |
25.4 mm = 1 in
6 × 9 KDP Book Size Calculator Examples (Paperback)
A widely used trade trim across genres. Below are precomputed sizes from our KDP book size calculator, including bleed.
| Paper (B&W) | Pages | Spine (in) | Full width (in) | Full height (in) |
|---|---|---|---|---|
| White | 100 | 0.225 | 12.475 | 9.250 |
| White | 120 | 0.270 | 12.520 | 9.250 |
| White | 200 | 0.450 | 12.700 | 9.250 |
| White | 300 | 0.676 | 12.926 | 9.250 |
| Cream | 100 | 0.250 | 12.500 | 9.250 |
| Cream | 120 | 0.300 | 12.550 | 9.250 |
| Cream | 200 | 0.500 | 12.750 | 9.250 |
| Cream | 300 | 0.750 | 13.000 | 9.250 |
Full width and height include bleed. For hardcover, dimensions are larger due to wrap and hinge; use the calculator above.
5 × 8 KDP Book Size Calculator Examples (Paperback)
A classic compact trim often used for fiction and poetry. Below are precomputed sizes including bleed.
| Paper (B&W) | Pages | Spine (in) | Full width (in) | Full height (in) |
|---|---|---|---|---|
| White | 100 | 0.225 | 10.475 | 8.250 |
| White | 120 | 0.270 | 10.520 | 8.250 |
| White | 200 | 0.450 | 10.700 | 8.250 |
| White | 300 | 0.676 | 10.926 | 8.250 |
| Cream | 100 | 0.250 | 10.500 | 8.250 |
| Cream | 120 | 0.300 | 10.550 | 8.250 |
| Cream | 200 | 0.500 | 10.750 | 8.250 |
| Cream | 300 | 0.750 | 11.000 | 8.250 |
5.5 × 8.5 KDP Book Size Calculator Examples (Paperback)
Another popular trade size for both fiction and non‑fiction. Values below include bleed.
| Paper (B&W) | Pages | Spine (in) | Full width (in) | Full height (in) |
|---|---|---|---|---|
| White | 100 | 0.225 | 11.475 | 8.750 |
| White | 120 | 0.270 | 11.520 | 8.750 |
| White | 200 | 0.450 | 11.700 | 8.750 |
| White | 300 | 0.676 | 11.926 | 8.750 |
| Cream | 100 | 0.250 | 11.500 | 8.750 |
| Cream | 120 | 0.300 | 11.550 | 8.750 |
| Cream | 200 | 0.500 | 11.750 | 8.750 |
| Cream | 300 | 0.750 | 12.000 | 8.750 |
How do I set up Photoshop / Canva for KDP covers?
Photoshop
- • Units: Inches; Resolution: 300 DPI
- • Color Mode: CMYK for print preview
- • Canvas Size: Use Full Width × Full Height from the calculator
- • Export: PDF/X-1a:2001 or High Quality Print
Canva
- • Create Design > Custom Size: Enter Inches
- • Width/Height: Use Full Width / Full Height values
- • Keep critical text/logos inside the Safe Zone
- • Download: PDF Print (select "Crop marks and bleed")
How to use the KDP Cover Size Calculator
Confirm the final page count (any even number between 24–1000); this determines the spine width.
Choose cover type (paperback/hardcover), paper type and trim size.
Review the inch/mm output and double-check bleed and safe zone.
Click "Open this size in KDP Cover Creator (Free)" to design your cover online.
Why trim, bleed, and spine math still cause KDP cover rejections
KDP checks full-wrap dimensions early. If trim, spine width, bleed, or safe-zone values are wrong, even by a small amount, the final cover can be rejected or print off-center.
KDP Book Size Calculator Terminology: Cover Dimensions, Bleed & Spine
| Term | Definition | Value |
|---|---|---|
| Bleed (paperback) | Extra area beyond trim to avoid white edges | 0.125 in |
| Safe zone | Keep text/logos inside this distance from trim | ≥ 0.125 in |
| Spine width | Pages × paper thickness (varies by stock) | dynamic |
| Hinge (hardcover) | Flexible zone next to spine | 0.394 in each side |
| Wrap / Turn‑in (hardcover) | Extra area that wraps around boards | 0.591 in each side/top/bottom |
Paperback vs Hardcover KDP Cover Size Differences
- • Paperback: width = 2 × trim width + spine + 2 × 0.125 in; height = trim height + 2 × 0.125 in.
- • Hardcover (case laminate): width = 2 × trim width + spine + 0.394 + 2 × 0.591; height = trim height + 0.236 + 2 × 0.591.
- • Spine width depends only on pages × paper thickness (white/cream/color).
Common KDP Cover Size Errors & Calculator Fixes
| Error | Cause | Fix |
|---|---|---|
| Incorrect trim size | Canvas not set to full width/height including bleed | Recreate the canvas with the calculator output (in/mm). |
| Spine text cutoff | Text outside spine safe zone or font too large | Reduce the font size or increase pages; keep text inside the safe zone. |
| White edge after trimming | Background doesn’t fill the bleed area | Extend artwork into the 0.125 in bleed on outer edges. |
| Blurry print | Effective resolution < 300 DPI at final size | Export a 300 DPI print‑ready PDF. |
KDP Book Size Calculator FAQ
Q1: How do I get the exact KDP cover size for my book?
What is 0.002252 in KDP spine width calculation?
Q2: Are these templates compatible with Canva?
Q3: Does the calculator include the required 0.125" bleed?
Q4: What is the difference between KDP Hardcover and Paperback dimensions?
Q5: Why should I export my cover as a 300 DPI PDF?
Q6: Where should I leave space for the Amazon barcode?
Q7: Do I need to create an account to download my KDP template?
Related Resources
Cover dimensions are only one part of a KDP launch. If you also need to prepare the ebook manuscript, chapters, metadata, and export package, try AIeBookGen's KDP ebook workflow.
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Amazon Book Dimensions Guide: KDP Trim Sizes, Formats, and Cover Math
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