8 x 10 in · 270 pages
270-page 8 x 10 in book: spine width & cover size
A 270-page 8 x 10 in paperback has a spine of 0.608 in (15.44 mm) on white paper or 0.675 in on cream. Full cover with bleed: 16.858 x 10.25 in.
0.608 inSpine, white paper15.44 mm
0.675 inSpine, cream paper17.15 mm
16.86 x 10.25Full cover, inchesincl. bleed
549 gEstimated weight19.4 oz
Cover template (white paper)
Spine and cover by paper type
| Paper | Spine | Spine (mm) | Full cover (in) | Full cover (mm) | At 300 ppi |
|---|---|---|---|---|---|
| White paper, black ink | 0.608 in | 15.44 mm | 16.858 x 10.25 in | 428.2 x 260.4 mm | 5,057 x 3,075 px |
| Cream paper, black ink | 0.675 in | 17.15 mm | 16.925 x 10.25 in | 429.9 x 260.4 mm | 5,078 x 3,075 px |
| Standard color (white) | 0.608 in | 15.44 mm | 16.858 x 10.25 in | 428.2 x 260.4 mm | 5,057 x 3,075 px |
| Premium color (white) | 0.6337 in | 16.1 mm | 16.884 x 10.25 in | 428.8 x 260.4 mm | 5,065 x 3,075 px |
Per-page factors are those published by KDP; IngramSpark and offset printers use their own paper calipers.
Other printers: spine by paper PPI
| Paper PPI | Typical stock | Spine | Spine (mm) |
|---|---|---|---|
| 350 PPI | Bulky / heavy stock (~70 lb text) | 0.7714 in | 19.59 mm |
| 400 PPI | Cream book paper (~55 lb) | 0.675 in | 17.15 mm |
| 444 PPI | White book paper (~50 lb) | 0.6081 in | 15.45 mm |
| 500 PPI | Lightweight text (~45 lb) | 0.54 in | 13.72 mm |
| 600 PPI | Thin text (~40 lb) | 0.45 in | 11.43 mm |
If your printer quotes pages per inch (PPI), spine = pages ÷ PPI. Ask for the exact PPI of your chosen stock.
Designing this cover
- Build the cover canvas at 16.858 x 10.25 in — or 5,057 x 3,075 px at 300 ppi.
- The back cover runs from the left edge to 8.125 in; the spine from 8.125 to 8.733 in; the front cover after that.
- Spine text is allowed — centre it and keep 0.0625 in clear on each side.
- Keep titles and faces at least 0.25 in inside the trim; KDP places the barcode in a 2 x 1.2 in area at the lower right of the back cover.
- Export as a flattened PDF (PDF/X-1a is safest) with fonts embedded.
Nearby page counts
| Pages | Spine (white) | Spine (cream) | Full cover (white) |
|---|---|---|---|
| 210 pages | 0.4729 in | 0.525 in | 16.723 x 10.25 in |
| 220 pages | 0.4954 in | 0.55 in | 16.745 x 10.25 in |
| 230 pages | 0.518 in | 0.575 in | 16.768 x 10.25 in |
| 240 pages | 0.5405 in | 0.6 in | 16.79 x 10.25 in |
| 250 pages | 0.563 in | 0.625 in | 16.813 x 10.25 in |
| 260 pages | 0.5855 in | 0.65 in | 16.836 x 10.25 in |
| 280 pages | 0.6306 in | 0.7 in | 16.881 x 10.25 in |
| 290 pages | 0.6531 in | 0.725 in | 16.903 x 10.25 in |
| 300 pages | 0.6756 in | 0.75 in | 16.926 x 10.25 in |
| 310 pages | 0.6981 in | 0.775 in | 16.948 x 10.25 in |
| 320 pages | 0.7206 in | 0.8 in | 16.971 x 10.25 in |
| 330 pages | 0.7432 in | 0.825 in | 16.993 x 10.25 in |
270 pages in other trim sizes
| Trim | Spine (white) | Full cover (white) |
|---|---|---|
| 5 x 8 in | 0.608 in | 10.858 x 8.25 in |
| 5.06 x 7.81 in | 0.608 in | 10.978 x 8.06 in |
| 5.25 x 8 in | 0.608 in | 11.358 x 8.25 in |
| 5.5 x 8.5 in | 0.608 in | 11.858 x 8.75 in |
| 6 x 9 in | 0.608 in | 12.858 x 9.25 in |
| 6.14 x 9.21 in | 0.608 in | 13.138 x 9.46 in |
| 6.69 x 9.61 in | 0.608 in | 14.238 x 9.86 in |
| 7 x 10 in | 0.608 in | 14.858 x 10.25 in |
| 7.5 x 9.25 in | 0.608 in | 15.858 x 9.5 in |
| 8.5 x 8.5 in | 0.608 in | 17.858 x 8.75 in |
| 8.5 x 11 in | 0.608 in | 17.858 x 11.25 in |
Spine width depends only on page count and paper; the cover width changes with the trim.
Frequently asked questions
How wide is the spine of a 270-page 8 x 10 in book?
On white paper it is 0.608 in (15.44 mm); on cream paper 0.675 in (17.15 mm), using KDP's per-page factors.
What size should the full cover be?
For white paper: 16.858 x 10.25 in (428.2 x 260.4 mm) including 0.125 in bleed on every side. For cream paper: 16.925 x 10.25 in.
Can I put text on the spine?
Yes. KDP allows spine text only for books with more than 79 pages; keep it at least 0.0625 in (1.6 mm) from each spine edge.
How heavy is a 270-page 8 x 10 in paperback?
About 549 g (19.4 oz) on white paper with a standard cover — useful for estimating postage.