Paper weight
350 gsm paper
350 gsm paper equals 93.1 lb bond, 236.5 lb text or 129.4 lb cover. Typical uses: luxury business cards, packaging, rigid tags. Very heavy board; usually needs specialist finishing.
93.1 lbbond / writing
236.5 lbtext / book
129.4 lbcover
≈ 438 µmthickness (uncoated)
Equivalent US basis weights
| Grade | Pounds | Basic sheet |
|---|---|---|
| Bond / Writing | 93.1 lb | 17 x 22 in |
| Text / Book / Offset | 236.5 lb | 25 x 38 in |
| Cover | 129.4 lb | 20 x 26 in |
| Index | 193.6 lb | 25.5 x 30.5 in |
| Bristol | 159.6 lb | 22.5 x 28.5 in |
| Newsprint / Tag | 215.1 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 | 438 µm | 17.2 pt | 116 PPI | 2.584 in |
| Bulky book paper | 525 µm | 20.7 pt | 97 PPI | 3.1 in |
| Coated (gloss/silk) | 315 µm | 12.4 pt | 161 PPI | 1.86 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 | 21.83 g | 10.91 kg |
| US Letter | 21.11 g | 23.3 lb |
What it is used for
Luxury business cards, packaging, rigid tags. Very heavy board; usually needs specialist finishing.