Leaf & Spine

5.06 x 7.81 in · 800 pages

800-page 5.06 x 7.81 in book: spine width & cover size

A 800-page 5.06 x 7.81 in paperback has a spine of 1.8016 in (45.76 mm) on white paper or 2 in on cream. Full cover with bleed: 12.172 x 8.06 in.

1.802 inSpine, white paper45.76 mm
2 inSpine, cream paper50.8 mm
12.17 x 8.06Full cover, inchesincl. bleed
780 gEstimated weight27.5 oz

Cover template (white paper)

Barcode areaBACK COVER5.06 x 7.81 inFRONT COVER5.06 x 7.81 inSPINE 1.802 inFull cover 12.172 x 8.06 in incl. 0.125 in bleed
Red: bleed (trimmed off) · dashed: 0.25 in safe zone · shaded: spine. Download a full-size template from the calculator.

Spine and cover by paper type

PaperSpineSpine (mm)Full cover (in)Full cover (mm)At 300 ppi
White paper, black ink1.8016 in45.76 mm12.172 x 8.06 in309.2 x 204.7 mm3,651 x 2,418 px
Cream paper, black ink2 in50.8 mm12.37 x 8.06 in314.2 x 204.7 mm3,711 x 2,418 px
Standard color (white)1.8016 in45.76 mm12.172 x 8.06 in309.2 x 204.7 mm3,651 x 2,418 px
Premium color (white)1.8776 in47.69 mm12.248 x 8.06 in311.1 x 204.7 mm3,674 x 2,418 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 PPITypical stockSpineSpine (mm)
350 PPIBulky / heavy stock (~70 lb text)2.2857 in58.06 mm
400 PPICream book paper (~55 lb)2 in50.8 mm
444 PPIWhite book paper (~50 lb)1.8018 in45.77 mm
500 PPILightweight text (~45 lb)1.6 in40.64 mm
600 PPIThin text (~40 lb)1.3333 in33.87 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 12.172 x 8.06 in — or 3,651 x 2,418 px at 300 ppi.
  • The back cover runs from the left edge to 5.185 in; the spine from 5.185 to 6.987 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

PagesSpine (white)Spine (cream)Full cover (white)
740 pages1.6665 in1.85 in12.036 x 8.06 in
760 pages1.7115 in1.9 in12.082 x 8.06 in
780 pages1.7566 in1.95 in12.127 x 8.06 in
828 pages1.8647 in2.07 in12.235 x 8.06 in

800 pages in other trim sizes

TrimSpine (white)Full cover (white)
5 x 8 in1.8016 in12.052 x 8.25 in
5.25 x 8 in1.8016 in12.552 x 8.25 in
5.5 x 8.5 in1.8016 in13.052 x 8.75 in
6 x 9 in1.8016 in14.052 x 9.25 in
6.14 x 9.21 in1.8016 in14.332 x 9.46 in
6.69 x 9.61 in1.8016 in15.432 x 9.86 in
7 x 10 in1.8016 in16.052 x 10.25 in
7.5 x 9.25 in1.8016 in17.052 x 9.5 in
8 x 10 in1.8016 in18.052 x 10.25 in
8.5 x 8.5 in1.8016 in19.052 x 8.75 in
8.5 x 11 in1.8016 in19.052 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 800-page 5.06 x 7.81 in book?
On white paper it is 1.8016 in (45.76 mm); on cream paper 2 in (50.8 mm), using KDP's per-page factors.
What size should the full cover be?
For white paper: 12.172 x 8.06 in (309.2 x 204.7 mm) including 0.125 in bleed on every side. For cream paper: 12.37 x 8.06 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 800-page 5.06 x 7.81 in paperback?
About 780 g (27.5 oz) on white paper with a standard cover — useful for estimating postage.