Book thickness
How thick is a 100-page book?
A 100-page paperback is about 0.225 in (5.7 mm) thick on white paper and 0.25 in on cream — 50 sheets of paper.
0.225 inwhite paper5.7 mm
0.25 incream paper
50sheets (leaves)
Spine width by paper
| Paper | Inches | Millimetres | Centimetres |
|---|---|---|---|
| White paper, black ink | 0.2252 in | 5.72 mm | 0.57 cm |
| Cream paper, black ink | 0.25 in | 6.35 mm | 0.64 cm |
| Standard color (white) | 0.2252 in | 5.72 mm | 0.57 cm |
| Premium color (white) | 0.2347 in | 5.96 mm | 0.6 cm |
Full cover size by trim
| Trim | Full cover incl. bleed (white) | Weight |
|---|---|---|
| 5 x 8 in | 10.475 x 8.25 in | 110 g |
| 5.06 x 7.81 in | 10.595 x 8.06 in | 109 g |
| 5.25 x 8 in | 10.975 x 8.25 in | 115 g |
| 5.5 x 8.5 in | 11.475 x 8.75 in | 128 g |
| 6 x 9 in | 12.475 x 9.25 in | 148 g |
| 6.14 x 9.21 in | 12.755 x 9.46 in | 155 g |
| 6.69 x 9.61 in | 13.855 x 9.86 in | 177 g |
| 7 x 10 in | 14.475 x 10.25 in | 192 g |
| 7.5 x 9.25 in | 15.475 x 9.5 in | 191 g |
| 8 x 10 in | 16.475 x 10.25 in | 220 g |
| 8.5 x 8.5 in | 17.475 x 8.75 in | 198 g |
| 8.5 x 11 in | 17.475 x 11.25 in | 257 g |
Offset papers by PPI
| PPI | Typical stock | Spine | Spine (mm) |
|---|---|---|---|
| 350 PPI | Bulky / heavy stock (~70 lb text) | 0.286 in | 7.3 mm |
| 400 PPI | Cream book paper (~55 lb) | 0.25 in | 6.4 mm |
| 444 PPI | White book paper (~50 lb) | 0.225 in | 5.7 mm |
| 500 PPI | Lightweight text (~45 lb) | 0.2 in | 5.1 mm |
| 600 PPI | Thin text (~40 lb) | 0.167 in | 4.2 mm |
Other page counts
Frequently asked questions
How thick is a 100-page book?
A 100-page paperback is about 0.225 in (5.7 mm) thick on white paper and 0.25 in on cream — 50 sheets of paper.
How many sheets of paper are in a 100-page book?
50 leaves — each sheet carries two pages, one on each side.
Can a 100-page book have text on the spine?
Yes.