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These tables provide equivalents (in pounds) for a ream of paper of a given type and basis weight, as well as metric equivalents. With these tables you can quickly look up the equivalent weights (and grams per square meter) for book, bond, cover, vellum bristol, index, or tag paper.


Note: The paper types are listed across the top of each table and the relevant basis weights for any given paper type are indicated in bold. Moreover, the numerical data in these tables should be considered to be estimates only and are not guaranteed.


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

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

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

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

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

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

See also…

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