Paper weight
135 gsm paper
135 gsm paper equals 35.9 lb bond, 91.2 lb text or 49.9 lb cover. Typical uses: posters, brochure covers, photo books, art prints. Heavy text weight; folds may need scoring on coated stock.
35.9 lbbond / writing
91.2 lbtext / book
49.9 lbcover
≈ 169 µmthickness (uncoated)
Equivalent US basis weights
| Grade | Pounds | Basic sheet |
|---|---|---|
| Bond / Writing | 35.9 lb | 17 x 22 in |
| Text / Book / Offset | 91.2 lb | 25 x 38 in |
| Cover | 49.9 lb | 20 x 26 in |
| Index | 74.7 lb | 25.5 x 30.5 in |
| Bristol | 61.6 lb | 22.5 x 28.5 in |
| Newsprint / Tag | 83 lb | 24 x 36 in |
Estimated thickness and pages per inch
| Paper type | Caliper | Points (mil) | Pages per inch | Spine for 300 pp |
|---|---|---|---|---|
| Uncoated offset | 169 µm | 6.6 pt | 301 PPI | 0.997 in |
| Bulky book paper | 202 µm | 8 pt | 251 PPI | 1.196 in |
| Coated (gloss/silk) | 122 µm | 4.8 pt | 418 PPI | 0.718 in |
Caliper ≈ grammage × bulk. Ask your printer for the measured caliper of the actual stock.
Sheet and ream weights
| Sheet | One sheet | Ream (500 sheets) |
|---|---|---|
| A4 | 8.42 g | 4.21 kg |
| US Letter | 8.14 g | 9 lb |
What it is used for
Posters, brochure covers, photo books, art prints. Heavy text weight; folds may need scoring on coated stock.