8.5" × 11" Paperback Cover Dimensions: 500 Pages, B&W White
PDF Width
18.3760"
1323.07 pt
PDF Height
11.2500"
810.00 pt
Spine Width
1.1260"
81.07 pt
How These Dimensions Are Calculated
spine_width = 500 pages × 0.002252" = 1.1260"
pdf_width = (2 × 8.5") + 1.1260" + 0.25" = 18.3760"
pdf_height = 11" + 0.25" = 11.2500"
pdf_width = (2 × 8.5") + 1.1260" + 0.25" = 18.3760"
pdf_height = 11" + 0.25" = 11.2500"
The 0.25" added to both width and height accounts for 0.125" bleed on each side. Your cover image must extend into this bleed area to avoid white edges after trimming.
Cover Layout (Left to Right)
[0.125" bleed] [Back Cover 8.5"] [Spine 1.1260"] [Front Cover 8.5"] [0.125" bleed]
Key Specifications
- Trim size: 8.5" × 11"
- Page count: 500 pages
- Paper type: Black & White on White Paper
- Bleed: 0.125" on all outer edges
- Safe margin: 0.25" inside trim line
- Spine text: Allowed (500 ≥ 79 pages)
- Barcode reserve: 2" × 1.2" on back cover
- Resolution: 300 DPI, RGB color space
Dimensions in Multiple Units
| Measurement | Inches | Points (pt) | Millimeters | Pixels (300 DPI) |
|---|---|---|---|---|
| PDF Width | 18.3760" | 1323.07 | 466.75 mm | 5513 px |
| PDF Height | 11.2500" | 810.00 | 285.75 mm | 3375 px |
| Spine Width | 1.1260" | 81.07 | 28.60 mm | 338 px |
Books over 500 pages at large trim sizes (7" × 10" or similar) are comprehensive technical references, encyclopedic guides, and authoritative academic texts. Spine widths exceed 1.13". At these dimensions, the spine design can carry a full three-line layout: series, title, and author. The large page area at high page counts produces extremely wide PDF files — approach 16"+ in total width — so source image resolution is critical. Large-format tomes also push shipping weight, which affects KDP's extended distribution pricing.