Book thickness

How thick is a 350-page book?

A 350-page paperback is about 0.788 in (20 mm) thick on white paper and 0.875 in on cream — 175 sheets of paper.

0.788 inwhite paper20 mm
0.875 incream paper
175sheets (leaves)

Spine width by paper

PaperInchesMillimetresCentimetres
White paper, black ink0.7882 in20.02 mm2 cm
Cream paper, black ink0.875 in22.23 mm2.22 cm
Standard color (white)0.7882 in20.02 mm2 cm
Premium color (white)0.8215 in20.86 mm2.09 cm

Full cover size by trim

TrimFull cover incl. bleed (white)Weight
5 x 8 in11.038 x 8.25 in353 g
5.06 x 7.81 in11.158 x 8.06 in348 g
5.25 x 8 in11.538 x 8.25 in370 g
5.5 x 8.5 in12.038 x 8.75 in412 g
6 x 9 in13.038 x 9.25 in476 g
6.14 x 9.21 in13.318 x 9.46 in498 g
6.69 x 9.61 in14.418 x 9.86 in566 g
7 x 10 in15.038 x 10.25 in617 g
7.5 x 9.25 in16.038 x 9.5 in611 g
8 x 10 in17.038 x 10.25 in704 g
8.5 x 8.5 in18.038 x 8.75 in636 g
8.5 x 11 in18.038 x 11.25 in823 g

Offset papers by PPI

PPITypical stockSpineSpine (mm)
350 PPIBulky / heavy stock (~70 lb text)1 in25.4 mm
400 PPICream book paper (~55 lb)0.875 in22.2 mm
444 PPIWhite book paper (~50 lb)0.788 in20 mm
500 PPILightweight text (~45 lb)0.7 in17.8 mm
600 PPIThin text (~40 lb)0.583 in14.8 mm

Other page counts

Frequently asked questions

How thick is a 350-page book?
A 350-page paperback is about 0.788 in (20 mm) thick on white paper and 0.875 in on cream — 175 sheets of paper.
How many sheets of paper are in a 350-page book?
175 leaves — each sheet carries two pages, one on each side.
Can a 350-page book have text on the spine?
Yes.