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Paper Size & Weight

Paper Size & Weight

Most countries use the international paper weight system. However, USA and Canada use the English

or British weight system. In order to prevent any possible confusion on both sides, we provide the

conversion table for the equivalent paper weight.

English Paper Basis Sizes

wide × length (inches) basis area (square inches)
text, book, bible, offset 25 × 38 950
cover 20 × 26 520
bond, writing ledger, manifold 17 × 22 374
index 25.5 × 30.5 778
vallum bristol 22.5 × 28.5 641
poster, tissues, newsprinting, tag 24 × 36 864
manuscript 18 × 31 558

Paper Weight

The English or British weight system denotes in pounds the weight of 500 sheets (or a ream) of a particular size paper assorted according to the end use. For example, 100# Text Paper shows the weight of 500 sheets (a ream) paper of size, 25" x 38"(950 square inches). Because 100# Cover Paper has the size of 20" x 26"(520 square inches) which is equal in weight with 100# Text Paper, it is twice as thick as the text paper.

* equivalet weight

Text / Book Cover Bond / Ledger Poster / Tag Index Points Gsm (g/m)
40 22 16 37 33 3.2 60
45 24 18 41 37 3.6 68
50 28 20 46 42 3.8 75
60 33 24 56 50 4.8 90
70 39 28 64 58 5.8 105
73 40 29 62 60 6 109
81 45 31 73 66 6.1 117
90 48 35 80 74 6.2 131
100 56 40 93 83 7.3 150
110 60 43 100 90 7.4 162
120 65 47 108 97 8 177
135 74 53 122 110 9 199
137 75 54 125 113 9 203
146 80 58 134 120 9.5 218
165 90 65 150 135 10 244
170 93 67 156 140 10.5 252
183 100 72 166 150 11 271
192 105 76 175 158 13 286
208 114 82 189 170 14 308
220 120 87 200 180 15 312

Paper Sizes

international metric paper sizes - iso standard

ISO size W × L (mm) W × L (inch)
A0 841 × 1189 33 × 46
A1 594 × 841 23.38 × 33
a2 420 × 594 16.5 × 23.38
a3 297 × 420 11.75 × 16.5
a4 210 × 297 8.25 × 11.75
a5 148 × 210 5.88 × 8.25
a6 105 × 148 4.13 × 6.88
b0 1000 × 1414 39.38 × 55.75
b1 707 × 1000 27.75 × 39.38
b2 500 × 707 19.75 × 27.75
b3 353 × 500 13.88 × 19.75
b4 250 × 353 9.88 × 13.88
b5 176 × 250 7 × 9.88

size commonly used in usa and canada

American Size W × L (mm) W × L (inch)
Letter 216 × 279 8.5 × 11
Legal 216 × 356 8.5 × 14
Executive 190 × 254 7.5 × 10
Ledger / Tabloid 279 × 432 111 × 17