Book thickness

How thick is a 80-page book?

A 80-page paperback is about 0.18 in (4.6 mm) thick on white paper and 0.2 in on cream — 40 sheets of paper.

0.18 inwhite paper4.6 mm
0.2 incream paper
40sheets (leaves)

Spine width by paper

PaperInchesMillimetresCentimetres
White paper, black ink0.1802 in4.58 mm0.46 cm
Cream paper, black ink0.2 in5.08 mm0.51 cm
Standard color (white)0.1802 in4.58 mm0.46 cm
Premium color (white)0.1878 in4.77 mm0.48 cm

Full cover size by trim

TrimFull cover incl. bleed (white)Weight
5 x 8 in10.43 x 8.25 in91 g
5.06 x 7.81 in10.55 x 8.06 in89 g
5.25 x 8 in10.93 x 8.25 in95 g
5.5 x 8.5 in11.43 x 8.75 in106 g
6 x 9 in12.43 x 9.25 in122 g
6.14 x 9.21 in12.71 x 9.46 in128 g
6.69 x 9.61 in13.81 x 9.86 in145 g
7 x 10 in14.43 x 10.25 in158 g
7.5 x 9.25 in15.43 x 9.5 in157 g
8 x 10 in16.43 x 10.25 in181 g
8.5 x 8.5 in17.43 x 8.75 in163 g
8.5 x 11 in17.43 x 11.25 in211 g

Offset papers by PPI

PPITypical stockSpineSpine (mm)
350 PPIBulky / heavy stock (~70 lb text)0.229 in5.8 mm
400 PPICream book paper (~55 lb)0.2 in5.1 mm
444 PPIWhite book paper (~50 lb)0.18 in4.6 mm
500 PPILightweight text (~45 lb)0.16 in4.1 mm
600 PPIThin text (~40 lb)0.133 in3.4 mm

Other page counts

Frequently asked questions

How thick is a 80-page book?
A 80-page paperback is about 0.18 in (4.6 mm) thick on white paper and 0.2 in on cream — 40 sheets of paper.
How many sheets of paper are in a 80-page book?
40 leaves — each sheet carries two pages, one on each side.
Can a 80-page book have text on the spine?
Yes.