Leaf & Spine

6.69 x 9.61 in · 72 pages

72-page 6.69 x 9.61 in book: spine width & cover size

A 72-page 6.69 x 9.61 in paperback has a spine of 0.1621 in (4.12 mm) on white paper or 0.18 in on cream. Full cover with bleed: 13.792 x 9.86 in.

0.162 inSpine, white paper4.12 mm
0.18 inSpine, cream paper4.57 mm
13.79 x 9.86Full cover, inchesincl. bleed
133 gEstimated weight4.7 oz

Cover template (white paper)

Barcode areaBACK COVER6.69 x 9.61 inFRONT COVER6.69 x 9.61 inSPINE 0.162 inFull cover 13.792 x 9.86 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 ink0.1621 in4.12 mm13.792 x 9.86 in350.3 x 250.4 mm4,138 x 2,958 px
Cream paper, black ink0.18 in4.57 mm13.81 x 9.86 in350.8 x 250.4 mm4,143 x 2,958 px
Standard color (white)0.1621 in4.12 mm13.792 x 9.86 in350.3 x 250.4 mm4,138 x 2,958 px
Premium color (white)0.169 in4.29 mm13.799 x 9.86 in350.5 x 250.4 mm4,140 x 2,958 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)0.2057 in5.23 mm
400 PPICream book paper (~55 lb)0.18 in4.57 mm
444 PPIWhite book paper (~50 lb)0.1622 in4.12 mm
500 PPILightweight text (~45 lb)0.144 in3.66 mm
600 PPIThin text (~40 lb)0.12 in3.05 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 13.792 x 9.86 in — or 4,138 x 2,958 px at 300 ppi.
  • The back cover runs from the left edge to 6.815 in; the spine from 6.815 to 6.977 in; the front cover after that.
  • At this page count the spine is too thin for text on KDP.
  • 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)
24 pages0.054 in0.06 in13.684 x 9.86 in
32 pages0.0721 in0.08 in13.702 x 9.86 in
40 pages0.0901 in0.1 in13.72 x 9.86 in
48 pages0.1081 in0.12 in13.738 x 9.86 in
56 pages0.1261 in0.14 in13.756 x 9.86 in
64 pages0.1441 in0.16 in13.774 x 9.86 in
80 pages0.1802 in0.2 in13.81 x 9.86 in
90 pages0.2027 in0.225 in13.833 x 9.86 in
100 pages0.2252 in0.25 in13.855 x 9.86 in
110 pages0.2477 in0.275 in13.878 x 9.86 in
120 pages0.2702 in0.3 in13.9 x 9.86 in
130 pages0.2928 in0.325 in13.923 x 9.86 in

72 pages in other trim sizes

TrimSpine (white)Full cover (white)
5 x 8 in0.1621 in10.412 x 8.25 in
5.06 x 7.81 in0.1621 in10.532 x 8.06 in
5.25 x 8 in0.1621 in10.912 x 8.25 in
5.5 x 8.5 in0.1621 in11.412 x 8.75 in
6 x 9 in0.1621 in12.412 x 9.25 in
6.14 x 9.21 in0.1621 in12.692 x 9.46 in
7 x 10 in0.1621 in14.412 x 10.25 in
7.5 x 9.25 in0.1621 in15.412 x 9.5 in
8 x 10 in0.1621 in16.412 x 10.25 in
8.5 x 8.5 in0.1621 in17.412 x 8.75 in
8.5 x 11 in0.1621 in17.412 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 72-page 6.69 x 9.61 in book?
On white paper it is 0.1621 in (4.12 mm); on cream paper 0.18 in (4.57 mm), using KDP's per-page factors.
What size should the full cover be?
For white paper: 13.792 x 9.86 in (350.3 x 250.4 mm) including 0.125 in bleed on every side. For cream paper: 13.81 x 9.86 in.
Can I put text on the spine?
Not on KDP. KDP allows spine text only for books with more than 79 pages. Keep thin spines plain or use a solid colour that wraps slightly onto the covers.
How heavy is a 72-page 6.69 x 9.61 in paperback?
About 133 g (4.7 oz) on white paper with a standard cover — useful for estimating postage.