8.5" × 11" Paperback Cover Dimensions: 100 Pages, B&W White
PDF Width
17.4752"
1258.21 pt
PDF Height
11.2500"
810.00 pt
Spine Width
0.2252"
16.21 pt
How These Dimensions Are Calculated
spine_width = 100 pages × 0.002252" = 0.2252"
pdf_width = (2 × 8.5") + 0.2252" + 0.25" = 17.4752"
pdf_height = 11" + 0.25" = 11.2500"
pdf_width = (2 × 8.5") + 0.2252" + 0.25" = 17.4752"
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 0.2252"] [Front Cover 8.5"] [0.125" bleed]
Key Specifications
- Trim size: 8.5" × 11"
- Page count: 100 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 (100 ≥ 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 | 17.4752" | 1258.21 | 443.87 mm | 5243 px |
| PDF Height | 11.2500" | 810.00 | 285.75 mm | 3375 px |
| Spine Width | 0.2252" | 16.21 | 5.72 mm | 68 px |
At 80–149 pages on a 7" × 10" or 8.5" × 11" trim with white paper, you have a textbook-adjacent format with comfortable margins and generous line width — typically used for academic workbooks, test-prep guides, and illustrated technical supplements. Spine widths of 0.18"–0.34" allow minimal spine text at this size. The large trim increases the per-unit printing cost compared to 6" × 9" at the same page count; evaluate whether the layout benefit justifies the cost for your target audience and pricing tier.