Book thickness
How thick is a 400-page book?
A 400-page paperback is about 0.901 in (22.9 mm) thick on white paper and 1 in on cream — 200 sheets of paper.
0.901 inwhite paper22.9 mm
1 incream paper
200sheets (leaves)
Spine width by paper
| Paper | Inches | Millimetres | Centimetres |
|---|---|---|---|
| White paper, black ink | 0.9008 in | 22.88 mm | 2.29 cm |
| Cream paper, black ink | 1 in | 25.4 mm | 2.54 cm |
| Standard color (white) | 0.9008 in | 22.88 mm | 2.29 cm |
| Premium color (white) | 0.9388 in | 23.85 mm | 2.38 cm |
Full cover size by trim
| Trim | Full cover incl. bleed (white) | Weight |
|---|---|---|
| 5 x 8 in | 11.151 x 8.25 in | 401 g |
| 5.06 x 7.81 in | 11.271 x 8.06 in | 396 g |
| 5.25 x 8 in | 11.651 x 8.25 in | 421 g |
| 5.5 x 8.5 in | 12.151 x 8.75 in | 469 g |
| 6 x 9 in | 13.151 x 9.25 in | 541 g |
| 6.14 x 9.21 in | 13.431 x 9.46 in | 567 g |
| 6.69 x 9.61 in | 14.531 x 9.86 in | 644 g |
| 7 x 10 in | 15.151 x 10.25 in | 701 g |
| 7.5 x 9.25 in | 16.151 x 9.5 in | 695 g |
| 8 x 10 in | 17.151 x 10.25 in | 801 g |
| 8.5 x 8.5 in | 18.151 x 8.75 in | 724 g |
| 8.5 x 11 in | 18.151 x 11.25 in | 937 g |
Offset papers by PPI
| PPI | Typical stock | Spine | Spine (mm) |
|---|---|---|---|
| 350 PPI | Bulky / heavy stock (~70 lb text) | 1.143 in | 29 mm |
| 400 PPI | Cream book paper (~55 lb) | 1 in | 25.4 mm |
| 444 PPI | White book paper (~50 lb) | 0.901 in | 22.9 mm |
| 500 PPI | Lightweight text (~45 lb) | 0.8 in | 20.3 mm |
| 600 PPI | Thin text (~40 lb) | 0.667 in | 16.9 mm |
Other page counts
Frequently asked questions
How thick is a 400-page book?
A 400-page paperback is about 0.901 in (22.9 mm) thick on white paper and 1 in on cream — 200 sheets of paper.
How many sheets of paper are in a 400-page book?
200 leaves — each sheet carries two pages, one on each side.
Can a 400-page book have text on the spine?
Yes.