Leaf & Spine

Royal (6.14 x 9.21 in) · 720 pages

720-page 6.14 x 9.21 in book: spine width & cover size

A 720-page 6.14 x 9.21 in paperback has a spine of 1.6214 in (41.18 mm) on white paper or 1.8 in on cream. Full cover with bleed: 14.151 x 9.46 in.

1.621 inSpine, white paper41.18 mm
1.8 inSpine, cream paper45.72 mm
14.15 x 9.46Full cover, inchesincl. bleed
1,006 gEstimated weight35.5 oz

Cover template (white paper)

Barcode areaBACK COVER6.14 x 9.21 inFRONT COVER6.14 x 9.21 inSPINE 1.621 inFull cover 14.151 x 9.46 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 ink1.6214 in41.18 mm14.151 x 9.46 in359.4 x 240.3 mm4,245 x 2,838 px
Cream paper, black ink1.8 in45.72 mm14.33 x 9.46 in364 x 240.3 mm4,299 x 2,838 px
Standard color (white)1.6214 in41.18 mm14.151 x 9.46 in359.4 x 240.3 mm4,245 x 2,838 px
Premium color (white)1.6898 in42.92 mm14.22 x 9.46 in361.2 x 240.3 mm4,266 x 2,838 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)2.0571 in52.25 mm
400 PPICream book paper (~55 lb)1.8 in45.72 mm
444 PPIWhite book paper (~50 lb)1.6216 in41.19 mm
500 PPILightweight text (~45 lb)1.44 in36.58 mm
600 PPIThin text (~40 lb)1.2 in30.48 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 14.151 x 9.46 in — or 4,245 x 2,838 px at 300 ppi.
  • The back cover runs from the left edge to 6.265 in; the spine from 6.265 to 7.886 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)
660 pages1.4863 in1.65 in14.016 x 9.46 in
680 pages1.5314 in1.7 in14.061 x 9.46 in
700 pages1.5764 in1.75 in14.106 x 9.46 in
740 pages1.6665 in1.85 in14.196 x 9.46 in
760 pages1.7115 in1.9 in14.242 x 9.46 in
780 pages1.7566 in1.95 in14.287 x 9.46 in

720 pages in other trim sizes

TrimSpine (white)Full cover (white)
5 x 8 in1.6214 in11.871 x 8.25 in
5.06 x 7.81 in1.6214 in11.991 x 8.06 in
5.25 x 8 in1.6214 in12.371 x 8.25 in
5.5 x 8.5 in1.6214 in12.871 x 8.75 in
6 x 9 in1.6214 in13.871 x 9.25 in
6.69 x 9.61 in1.6214 in15.251 x 9.86 in
7 x 10 in1.6214 in15.871 x 10.25 in
7.5 x 9.25 in1.6214 in16.871 x 9.5 in
8 x 10 in1.6214 in17.871 x 10.25 in
8.5 x 8.5 in1.6214 in18.871 x 8.75 in
8.5 x 11 in1.6214 in18.871 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 720-page 6.14 x 9.21 in book?
On white paper it is 1.6214 in (41.18 mm); on cream paper 1.8 in (45.72 mm), using KDP's per-page factors.
What size should the full cover be?
For white paper: 14.151 x 9.46 in (359.4 x 240.3 mm) including 0.125 in bleed on every side. For cream paper: 14.33 x 9.46 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 720-page 6.14 x 9.21 in paperback?
About 1,006 g (35.5 oz) on white paper with a standard cover — useful for estimating postage.