Book thickness
How thick is a 640-page book?
A 640-page paperback is about 1.441 in (36.6 mm) thick on white paper and 1.6 in on cream — 320 sheets of paper.
1.441 inwhite paper36.6 mm
1.6 incream paper
320sheets (leaves)
Spine width by paper
| Paper | Inches | Millimetres | Centimetres |
|---|---|---|---|
| White paper, black ink | 1.4413 in | 36.61 mm | 3.66 cm |
| Cream paper, black ink | 1.6 in | 40.64 mm | 4.06 cm |
| Standard color (white) | 1.4413 in | 36.61 mm | 3.66 cm |
| Premium color (white) | 1.5021 in | 38.15 mm | 3.82 cm |
Full cover size by trim
| Trim | Full cover incl. bleed (white) | Weight |
|---|---|---|
| 5 x 8 in | 11.691 x 8.25 in | 634 g |
| 5.06 x 7.81 in | 11.811 x 8.06 in | 626 g |
| 5.25 x 8 in | 12.191 x 8.25 in | 666 g |
| 5.5 x 8.5 in | 12.691 x 8.75 in | 741 g |
| 6 x 9 in | 13.691 x 9.25 in | 856 g |
| 6.14 x 9.21 in | 13.971 x 9.46 in | 896 g |
| 6.69 x 9.61 in | 15.071 x 9.86 in | 1,018 g |
| 7 x 10 in | 15.691 x 10.25 in | 1,109 g |
| 7.5 x 9.25 in | 16.691 x 9.5 in | 1,099 g |
| 8 x 10 in | 17.691 x 10.25 in | 1,267 g |
| 8.5 x 8.5 in | 18.691 x 8.75 in | 1,144 g |
| 8.5 x 11 in | 18.691 x 11.25 in | 1,480 g |
Offset papers by PPI
| PPI | Typical stock | Spine | Spine (mm) |
|---|---|---|---|
| 350 PPI | Bulky / heavy stock (~70 lb text) | 1.829 in | 46.4 mm |
| 400 PPI | Cream book paper (~55 lb) | 1.6 in | 40.6 mm |
| 444 PPI | White book paper (~50 lb) | 1.441 in | 36.6 mm |
| 500 PPI | Lightweight text (~45 lb) | 1.28 in | 32.5 mm |
| 600 PPI | Thin text (~40 lb) | 1.067 in | 27.1 mm |
Other page counts
Frequently asked questions
How thick is a 640-page book?
A 640-page paperback is about 1.441 in (36.6 mm) thick on white paper and 1.6 in on cream — 320 sheets of paper.
How many sheets of paper are in a 640-page book?
320 leaves — each sheet carries two pages, one on each side.
Can a 640-page book have text on the spine?
Yes.