5" × 8" Paperback Cover Dimensions: 72 Pages, B&W White
PDF Width
10.4121"
749.67 pt
PDF Height
8.2500"
594.00 pt
Spine Width
0.1621"
11.67 pt
How These Dimensions Are Calculated
spine_width = 72 pages × 0.002252" = 0.1621"
pdf_width = (2 × 5") + 0.1621" + 0.25" = 10.4121"
pdf_height = 8" + 0.25" = 8.2500"
pdf_width = (2 × 5") + 0.1621" + 0.25" = 10.4121"
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 0.1621"] [Front Cover 5"] [0.125" bleed]
Key Specifications
- Trim size: 5" × 8"
- Page count: 72 pages
- Paper type: Black & White on White Paper
- Bleed: 0.125" on all outer edges
- Safe margin: 0.25" inside trim line
- Spine text: Not allowed (72 < 79 pages required)
- 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 | 10.4121" | 749.67 | 264.47 mm | 3124 px |
| PDF Height | 8.2500" | 594.00 | 209.55 mm | 2475 px |
| Spine Width | 0.1621" | 11.67 | 4.12 mm | 49 px |
At under 80 pages on a compact 5"–5.25" × 8" trim, your spine will measure less than 0.18 inches — well below KDP's 79-page minimum required to print spine text. Many short-form works land here: novellas, chapbooks, poetry collections, and slim reference guides. The narrow spine is not a flaw; readers browse the front cover. Keep text and barcodes off the spine entirely, and ensure your back-cover barcode reserve (2" × 1.2") does not crowd the safety margin. This is the most economical configuration for short-run genre fiction and digital-supplement print editions.