5" × 8" Paperback Cover Dimensions: 500 Pages, B&W White
PDF Width
11.3760"
819.07 pt
PDF Height
8.2500"
594.00 pt
Spine Width
1.1260"
81.07 pt
How These Dimensions Are Calculated
spine_width = 500 pages × 0.002252" = 1.1260"
pdf_width = (2 × 5") + 1.1260" + 0.25" = 11.3760"
pdf_height = 8" + 0.25" = 8.2500"
pdf_width = (2 × 5") + 1.1260" + 0.25" = 11.3760"
pdf_height = 8" + 0.25" = 8.2500"
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 5"] [Spine 1.1260"] [Front Cover 5"] [0.125" bleed]
Key Specifications
- Trim size: 5" × 8"
- 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 | 11.3760" | 819.07 | 288.95 mm | 3413 px |
| PDF Height | 8.2500" | 594.00 | 209.55 mm | 2475 px |
| Spine Width | 1.1260" | 81.07 | 28.60 mm | 338 px |
Books exceeding 500 pages at a compact 5"–5.25" × 8" trim are rare but not unheard of — dense fantasy novels and complete omnibus editions occasionally reach this size. Spine widths exceed 1.13", providing ample space for elaborate spine designs. Keep in mind that KDP caps black-and-white paperbacks at 828 pages; white paper reaches this limit at a spine of about 1.87". At these page counts the book's height-to-width ratio and physical weight become practical concerns for readers. Consider whether a larger trim size would improve readability and reduce page count.