Book thickness
How thick is a 72-page book?
A 72-page paperback is about 0.162 in (4.1 mm) thick on white paper and 0.18 in on cream — 36 sheets of paper.
0.162 inwhite paper4.1 mm
0.18 incream paper
36sheets (leaves)
Spine width by paper
| Paper | Inches | Millimetres | Centimetres |
|---|---|---|---|
| White paper, black ink | 0.1621 in | 4.12 mm | 0.41 cm |
| Cream paper, black ink | 0.18 in | 4.57 mm | 0.46 cm |
| Standard color (white) | 0.1621 in | 4.12 mm | 0.41 cm |
| Premium color (white) | 0.169 in | 4.29 mm | 0.43 cm |
Full cover size by trim
| Trim | Full cover incl. bleed (white) | Weight |
|---|---|---|
| 5 x 8 in | 10.412 x 8.25 in | 83 g |
| 5.06 x 7.81 in | 10.532 x 8.06 in | 82 g |
| 5.25 x 8 in | 10.912 x 8.25 in | 87 g |
| 5.5 x 8.5 in | 11.412 x 8.75 in | 97 g |
| 6 x 9 in | 12.412 x 9.25 in | 112 g |
| 6.14 x 9.21 in | 12.692 x 9.46 in | 117 g |
| 6.69 x 9.61 in | 13.792 x 9.86 in | 133 g |
| 7 x 10 in | 14.412 x 10.25 in | 145 g |
| 7.5 x 9.25 in | 15.412 x 9.5 in | 143 g |
| 8 x 10 in | 16.412 x 10.25 in | 165 g |
| 8.5 x 8.5 in | 17.412 x 8.75 in | 149 g |
| 8.5 x 11 in | 17.412 x 11.25 in | 193 g |
Offset papers by PPI
| PPI | Typical stock | Spine | Spine (mm) |
|---|---|---|---|
| 350 PPI | Bulky / heavy stock (~70 lb text) | 0.206 in | 5.2 mm |
| 400 PPI | Cream book paper (~55 lb) | 0.18 in | 4.6 mm |
| 444 PPI | White book paper (~50 lb) | 0.162 in | 4.1 mm |
| 500 PPI | Lightweight text (~45 lb) | 0.144 in | 3.7 mm |
| 600 PPI | Thin text (~40 lb) | 0.12 in | 3 mm |
Other page counts
Frequently asked questions
How thick is a 72-page book?
A 72-page paperback is about 0.162 in (4.1 mm) thick on white paper and 0.18 in on cream — 36 sheets of paper.
How many sheets of paper are in a 72-page book?
36 leaves — each sheet carries two pages, one on each side.
Can a 72-page book have text on the spine?
Not on KDP, which requires more than 79 pages for spine text.