Source: Pocket Pal (Copyright International Paper)
Basis weights in bold, highlighted in green.
| PAPER GRADE | BOOK | BOND | COVER | BRISTOL | INDEX | TAG | metric equivalent |
| Sheet size for determining basis weight | 25×38" | 17×22" | 20×26" | 22.5×28.5" | 25.5×30.5" | 24×36" | (in grams per square meter) |
| 30# | 12 | 16 | 20 | 25 | 27 | 44 gsm | |
| 40# | 16 | 22 | 27 | 33 | 36 | 59 gsm | |
| 45# | 18 | 25 | 30 | 37 | 41 | 67 gsm | |
| 50# | 20 | 27 | 34 | 41 | 45 | 74 gsm | |
| BOOK | 60# | 24 | 33 | 40 | 49 | 55 | 89 gsm |
| (weight of 500-sheet ream, in pounds) | 70# | 28 | 38 | 47 | 57 | 64 | 104 gsm |
| 80# | 31 | 44 | 54 | 65 | 73 | 118 gsm | |
| 90# | 35 | 49 | 60 | 74 | 82 | 133 gsm | |
| 100# | 39 | 55 | 67 | 82 | 91 | 148 gsm | |
| 120# | 47 | 66 | 80 | 98 | 109 | 178 gsm | |
| 33 | 13# | 18 | 22 | 27 | 30 | 49 gsm | |
| 41 | 16# | 22 | 27 | 33 | 37 | 61 gsm | |
| 51 | 20# | 28 | 34 | 42 | 46 | 75 gsm | |
| BOND | 61 | 24# | 33 | 41 | 50 | 56 | 90 gsm |
| (weight of 500-sheet ream, in pounds) | 71 | 28# | 39 | 48 | 58 | 64 | 105 gsm |
| 81 | 32# | 45 | 55 | 67 | 74 | 120 gsm | |
| 91 | 36# | 50 | 62 | 75 | 83 | 135 gsm | |
| 102 | 40# | 56 | 69 | 83 | 93 | 158 gsm | |
| 91 | 36 | 50# | 62 | 75 | 82 | 135 gsm | |
| 110 | 43 | 60# | 74 | 90 | 100 | 163 gsm | |
| COVER | 119 | 47 | 65# | 80 | 97 | 108 | 176 gsm |
| (weight of 500-sheet ream, in pounds) | 146 | 58 | 80# | 99 | 120 | 134 | 216 gsm |
| 164 | 65 | 90# | 111 | 135 | 149 | 243 gsm | |
| 183 | 72 | 100# | 124 | 150 | 166 | 271 gsm | |
| 100 | 39 | 54 | 67# | 81 | 91 | 148 gsm | |
| 120 | 47 | 65 | 80# | 98 | 109 | 178 gsm | |
| BRISTOL | 148 | 58 | 81 | 100# | 121 | 135 | 219 gsm |
| (weight of 500-sheet ream, in pounds) | 176 | 70 | 97 | 120# | 146 | 162 | 261 gsm |
| 207 | 82 | 114 | 140# | 170 | 189 | 306 gsm | |
| 237 | 93 | 130 | 160# | 194 | 216 | 351 gsm | |
| 110 | 43 | 60 | 74 | 90# | 100 | 163 gsm | |
| INDEX | 135 | 53 | 74 | 91 | 110# | 122 | 203 gsm |
| (weight of 500-sheet ream, in pounds) | 170 | 67 | 93 | 115 | 140# | 156 | 252 gsm |
| 208 | 82 | 114 | 140 | 170# | 189 | 328 gsm | |
| 110 | 43 | 60 | 74 | 90 | 100# | 163 gsm | |
| 137 | 54 | 75 | 93 | 113 | 125# | 203 gsm | |
| TAG | 165 | 65 | 90 | 111 | 135 | 150# | 244 gsm |
| (weight of 500-sheet ream, in pounds) | 192 | 76 | 105 | 130 | 158 | 175# | 284 gsm |
| 220 | 87 | 120 | 148 | 180 | 200# | 326 gsm | |
| 275 | 109 | 151 | 186 | 225 | 250# | 407 gsm |