Paper weight
270 gsm paper
270 gsm paper equals 71.8 lb bond, 182.4 lb text or 99.8 lb cover. Typical uses: business cards, premium covers, invitations. Firm card that holds its shape; scoring is essential for folding.
71.8 lbbond / writing
182.4 lbtext / book
99.8 lbcover
≈ 338 µmthickness (uncoated)
Equivalent US basis weights
| Grade | Pounds | Basic sheet |
|---|---|---|
| Bond / Writing | 71.8 lb | 17 x 22 in |
| Text / Book / Offset | 182.4 lb | 25 x 38 in |
| Cover | 99.8 lb | 20 x 26 in |
| Index | 149.3 lb | 25.5 x 30.5 in |
| Bristol | 123.1 lb | 22.5 x 28.5 in |
| Newsprint / Tag | 165.9 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 | 338 µm | 13.3 pt | 151 PPI | 1.993 in |
| Bulky book paper | 405 µm | 15.9 pt | 125 PPI | 2.392 in |
| Coated (gloss/silk) | 243 µm | 9.6 pt | 209 PPI | 1.435 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 | 16.84 g | 8.42 kg |
| US Letter | 16.29 g | 18 lb |
What it is used for
Business cards, premium covers, invitations. Firm card that holds its shape; scoring is essential for folding.