T301: Equivalent Paper Weights
500 sheets per ream. Basis weights in BOLD type.
| PAPER GRADE | BOOK 25 x 38 | BOND 17 x 22 | COVER 20 x 26 | BRISTOL 22½ x 28½ | INDEX 25½ x 30½ | TAG 24 x 36 | METRIC gm/m2 |
|---|---|---|---|---|---|---|---|
| BOOK | 30 | 12 | 16 | 20 | 25 | 27 | 44 |
| 40 | 16 | 22 | 27 | 33 | 36 | 59 | |
| 45 | 18 | 25 | 30 | 37 | 41 | 67 | |
| 50 | 20 | 27 | 34 | 41 | 45 | 74 | |
| 60 | 24 | 33 | 40 | 49 | 55 | 89 | |
| 70 | 28 | 38 | 47 | 57 | 64 | 104 | |
| 80 | 31 | 44 | 54 | 65 | 73 | 118 | |
| 90 | 35 | 49 | 60 | 74 | 82 | 133 | |
| 100 | 39 | 55 | 67 | 82 | 91 | 148 | |
| 120 | 47 | 66 | 80 | 9 | 109 | 178 | |
| BOND | 33 | 13 | 18 | 22 | 27 | 30 | 49 |
| 41 | 16 | 22 | 27 | 33 | 37 | 61 | |
| 51 | 20 | 28 | 34 | 42 | 46 | 75 | |
| 61 | 24 | 33 | 41 | 50 | 56 | 90 | |
| 71 | 28 | 39 | 48 | 58 | 64 | 105 | |
| 81 | 32 | 45 | 55 | 67 | 74 | 120 | |
| 91 | 36 | 50 | 62 | 75 | 83 | 135 | |
| 102 | 40 | 56 | 69 | 83 | 93 | 158 | |
| COVER | 91 | 36 | 50 | 62 | 75 | 82 | 13 |
| 110 | 43 | 60 | 74 | 90 | 100 | 163 | |
| 119 | 47 | 65 | 80 | 97 | 108 | 176 | |
| 146 | 58 | 80 | 99 | 120 | 134 | 216 | |
| 164 | 65 | 90 | 111 | 135 | 149 | 243 | |
| 183 | 72 | 100 | 124 | 150 | 166 | 271 | |
| BRISTOL | 100 | 39 | 54 | 67 | 81 | 91 | 148 |
| 120 | 47 | 65 | 80 | 98 | 109 | 178 | |
| 148 | 58 | 81 | 100 | 121 | 13 | 219 | |
| 176 | 70 | 97 | 120 | 146 | 162 | 261 | |
| 207 | 82 | 114 | 140 | 170 | 189 | 306 | |
| 237 | 93 | 130 | 160 | 194 | 216 | 351 | |
| INDEX | 110 | 43 | 60 | 74 | 90 | 100 | 163 |
| 135 | 53 | 74 | 91 | 110 | 122 | 203 | |
| 170 | 67 | 93 | 115 | 140 | 156 | 252 | |
| 208 | 82 | 114 | 140 | 170 | 189 | 328 | |
| TAG | 110 | 43 | 60 | 74 | 90 | 100 | 163 |
| 137 | 54 | 75 | 93 | 113 | 125 | 203 | |
| 165 | 65 | 90 | 111 | 135 | 150 | 244 | |
| 192 | 76 | 105 | 130 | 158 | 175 | 284 | |
| 220 | 87 | 120 | 148 | 180 | 200 | 326 | |
| 275 | 109 | 151 | 186 | 225 | 250 | 407 |
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