Book thickness

How thick is a 360-page book?

A 360-page paperback is about 0.811 in (20.6 mm) thick on white paper and 0.9 in on cream — 180 sheets of paper.

0.811 inwhite paper20.6 mm
0.9 incream paper
180sheets (leaves)

Spine width by paper

PaperInchesMillimetresCentimetres
White paper, black ink0.8107 in20.59 mm2.06 cm
Cream paper, black ink0.9 in22.86 mm2.29 cm
Standard color (white)0.8107 in20.59 mm2.06 cm
Premium color (white)0.8449 in21.46 mm2.15 cm

Full cover size by trim

TrimFull cover incl. bleed (white)Weight
5 x 8 in11.061 x 8.25 in362 g
5.06 x 7.81 in11.181 x 8.06 in358 g
5.25 x 8 in11.561 x 8.25 in380 g
5.5 x 8.5 in12.061 x 8.75 in423 g
6 x 9 in13.061 x 9.25 in489 g
6.14 x 9.21 in13.341 x 9.46 in512 g
6.69 x 9.61 in14.441 x 9.86 in582 g
7 x 10 in15.061 x 10.25 in634 g
7.5 x 9.25 in16.061 x 9.5 in628 g
8 x 10 in17.061 x 10.25 in724 g
8.5 x 8.5 in18.061 x 8.75 in654 g
8.5 x 11 in18.061 x 11.25 in846 g

Offset papers by PPI

PPITypical stockSpineSpine (mm)
350 PPIBulky / heavy stock (~70 lb text)1.029 in26.1 mm
400 PPICream book paper (~55 lb)0.9 in22.9 mm
444 PPIWhite book paper (~50 lb)0.811 in20.6 mm
500 PPILightweight text (~45 lb)0.72 in18.3 mm
600 PPIThin text (~40 lb)0.6 in15.2 mm

Other page counts

Frequently asked questions

How thick is a 360-page book?
A 360-page paperback is about 0.811 in (20.6 mm) thick on white paper and 0.9 in on cream — 180 sheets of paper.
How many sheets of paper are in a 360-page book?
180 leaves — each sheet carries two pages, one on each side.
Can a 360-page book have text on the spine?
Yes.