Equivalent Weights & Grammage Chart
The tables below provide selected equivalents (in pounds) for a ream of paper of a given type and basis weight, with metric equivalents also provided. With these tables you can quickly look up the equivalent weights (and grams per square meter) for the following kinds of paper:
The paper types are listed across the top of each table; the relevant basis weights for any given paper type are indicated in boldface.
For your convenience, this chart is available here as a free downloadable PDF »
Disclaimer:
The numerical data in these tables should be considered to be estimates only and are not guaranteed by Case Paper Company as accurate in all situations.
see also... BOOK | BOND | COVER | VELLUM BRISTOL | INDEX | TAG
Book Paper
Equivalent Weights
|
Book 25×38 |
Bond 17×22 |
Cover 20×26 |
Bristol 22½×28½ |
Index 25½×30½ |
Tag 24×36 |
Metric g/m² |
|---|---|---|---|---|---|---|
| 30 | 11.8 | 16.4 | 20.3 | 24.6 | 27.3 | 44 |
| 40 | 15.7 | 21.9 | 27.0 | 32.7 | 36.4 | 59 |
| 45 | 17.7 | 24.6 | 30.4 | 36.8 | 40.9 | 67 |
| 50 | 19.7 | 27.4 | 33.8 | 40.9 | 45.5 | 74 |
| 60 | 23.6 | 32.8 | 40.5 | 49.1 | 54.6 | 89 |
| 70 | 27.6 | 38.3 | 47.3 | 57.3 | 63.7 | 104 |
| 80 | 31.5 | 43.8 | 54.0 | 65.5 | 72.8 | 118 |
| 90 | 35.4 | 49.3 | 60.8 | 73.7 | 81.9 | 133 |
| 100 | 39.4 | 54.7 | 67.5 | 81.9 | 90.9 | 148 |
| 120 | 47.2 | 65.7 | 81.0 | 98.2 | 109.1 | 178 |
see also... BOOK | BOND | COVER | VELLUM BRISTOL | INDEX | TAG
Bond Paper
Equivalent Weights
|
Book 25×38 |
Bond 17×22 |
Cover 20×26 |
Bristol 22½×28½ |
Index 25½×30½ |
Tag 24×36 |
Metric g/m² |
|---|---|---|---|---|---|---|
| 33.0 | 13 | 18.1 | 22.3 | 27.0 | 30.0 | 49 |
| 40.6 | 16 | 22.2 | 27.4 | 33.3 | 37.0 | 60 |
| 50.8 | 20 | 27.8 | 34.3 | 41.6 | 46.2 | 75 |
| 61.0 | 24 | 33.4 | 41.1 | 49.9 | 55.4 | 90 |
| 71.1 | 28 | 38.9 | 48.0 | 58.2 | 64.7 | 105 |
| 81.3 | 32 | 44.5 | 54.9 | 66.5 | 73.9 | 120 |
| 91.4 | 36 | 50.1 | 61.7 | 74.9 | 83.2 | 135 |
| 101.6 | 40 | 55.6 | 68.6 | 83.2 | 92.4 | 150 |
see also... BOOK | BOND | COVER | VELLUM BRISTOL | INDEX | TAG
Cover Paper
Equivalent Weights
|
Book 25×38 |
Bond 17×22 |
Cover 20×26 |
Bristol 22½×28½ |
Index 25½×30½ |
Tag 24×36 |
Metric g/m² |
|---|---|---|---|---|---|---|
| 91.3 | 36.0 | 50 | 61.7 | 74.8 | 83.1 | 135 |
| 109.6 | 43.2 | 60 | 74.0 | 89.7 | 99.7 | 162 |
| 118.8 | 46.8 | 65 | 80.2 | 97.2 | 108.0 | 176 |
| 146.2 | 57.5 | 80 | 98.7 | 119.7 | 132.9 | 216 |
| 164.4 | 64.7 | 90 | 111.0 | 134.6 | 149.5 | 243 |
| 182.7 | 71.9 | 100 | 123.3 | 149.6 | 166.2 | 271 |
| 201.0 | 79.1 | 110 | 135.6 | 164.5 | 182.8 | 298 |
| 237.5 | 93.5 | 130 | 160.3 | 194.4 | 216.0 | 352 |
| 292.3 | 115.1 | 160 | 197.3 | 239.3 | 265.8 | 433 |
see also... BOOK | BOND | COVER | VELLUM BRISTOL | INDEX | TAG
Vellum Bristol Paper
Equivalent Weights
|
Book 25×38 |
Bond 17×22 |
Cover 20×26 |
Bristol 22½×28½ |
Index 25½×30½ |
Tag 24×36 |
Metric g/m² |
|---|---|---|---|---|---|---|
| 99.3 | 39.1 | 54.3 | 67 | 81.3 | 90.3 | 147 |
| 118.5 | 46.7 | 64.9 | 80 | 97.0 | 107.8 | 176 |
| 148.1 | 58.3 | 81.1 | 100 | 121.3 | 134.7 | 219 |
| 177.8 | 70.0 | 97.3 | 120 | 145.5 | 161.7 | 263 |
| 207.4 | 81.7 | 113.5 | 140 | 169.8 | 188.6 | 307 |
| 237.0 | 93.3 | 129.7 | 160 | 194.1 | 215.6 | 351 |
see also... BOOK | BOND | COVER | VELLUM BRISTOL | INDEX | TAG
Index Paper
Equivalent Weights
|
Book 25×38 |
Bond 17×22 |
Cover 20×26 |
Bristol 22½×28½ |
Index 25½×30½ |
Tag 24×36 |
Metric g/m² |
|---|---|---|---|---|---|---|
| 109.9 | 43.3 | 60.2 | 74.2 | 90 | 100.0 | 163 |
| 134.4 | 52.9 | 73.5 | 90.7 | 110 | 122.2 | 199 |
| 171.0 | 67.3 | 93.6 | 115.4 | 140 | 155.5 | 253 |
| 207.7 | 81.7 | 113.7 | 140.2 | 170 | 188.9 | 307 |
see also... BOOK | BOND | COVER | VELLUM BRISTOL | INDEX | TAG
Tag Paper
Equivalent Weights
|
Book 25×38 |
Bond 17×22 |
Cover 20×26 |
Bristol 22½×28½ |
Index 25½×30½ |
Tag 24×36 |
Metric g/m² |
|---|---|---|---|---|---|---|
| 110.0 | 43.3 | 60.2 | 74.2 | 90.0 | 100 | 163 |
| 137.4 | 54.1 | 75.2 | 92.8 | 112.5 | 125 | 204 |
| 164.9 | 64.9 | 90.3 | 111.3 | 135.0 | 150 | 244 |
| 192.4 | 75.8 | 105.3 | 129.9 | 157.5 | 175 | 285 |
| 219.9 | 86.6 | 120.4 | 148.4 | 180.0 | 200 | 326 |
| 274.9 | 108.2 | 150.5 | 185.5 | 225.0 | 250 | 407 |
