110 lb index paper
199 g/m²
110 lb index · basis size 25.5 × 30.5 in · Index cards, tabbed dividers and stiff record cards.
Where 199 gsm comes from
An American basis weight is the weight of 500 sheets at that grade's basis size. For index that size is 25.5 × 30.5 inches, so:
500 sheets × 25.5 × 30.5 in = 388,875 in² = 250.9 m²
110 lb = 49,895 g
49,895 g ÷ 250.9 m² = 199 g/m²The same number, a different paper
110 lb is not one weight. Because every grade is weighed at its own sheet size, the same pound figure describes papers that are nothing alike:
| Grade | Basis size | 110 lb is | vs index |
|---|---|---|---|
| Index | 25.5 × 30.5 in | 199 gsm | — |
| Bond / Writing | 17 × 22 in | 414 gsm | 2.08× |
| Text / Book | 25 × 38 in | 163 gsm | 0.82× |
| Cover | 20 × 26 in | 297 gsm | 1.50× |
| Tag | 24 × 36 in | 179 gsm | 0.90× |
| Bristol | 22.5 × 28.5 in | 241 gsm | 1.21× |
This is the reason to ask for gsm. One number, no grade, no ambiguity — 199 gsm is 199 gsm whoever is printing it.
Frequently asked questions
What is 110 lb index paper in gsm?
199 gsm. 110 lb means 500 sheets at the index basis size of 25.5 × 30.5 inches weigh 110 pounds.
Is 110 lb index the same as 110 lb bond?
No, and the difference is large. 110 lb index is 199 gsm; 110 lb bond is 414 gsm — 2.08 times as heavy. The pound number is the weight of 500 sheets at a size that differs by grade, so it cannot be compared across them.
What is 110 lb index used for?
Index cards, tabbed dividers and stiff record cards. At 199 gsm: board rather than paper, needing a press with a straight paper path.