Compare weights of text, covers, bonds and other types of paper by consulting the chart below. Do you want to know how to convert the basis weight of your bond stock into an equivalent Book weight? Simply use the chart below as a handy guide to determine basis weight conversions.
Table 1: Basis Weight Conversion Chart
Bond 17x22
Book 25x38
Cover 20x26
Bristol 22½x28½
Bristol 22½x35
Index 25½x30½
Tag 24x36
Bond
13
33
18
22
27
27
30
Ledger
16
41
22
27
34
33
37
Mimeo
20
51
28
34
42
42
46
Duplicator
24
61
33
41
51
50
56
Writings
28
71
39
48
59
58
64
32
81
45
55
67
67
74
36
91
50
62
76
75
83
Book
12
30
16
20
25
25
27
Offset
16
40
21
27
33
32
36
18
45
24
30
37
37
41
20
50
27
34
41
41
45
24
60
32
40
50
49
55
28
70
28
47
58
57
64
31
80
43
54
66
66
73
35
90
48
60
75
74
82
39
100
54
67
83
81
91
47
120
65
80
99
98
109
Cover
29
73
40
49
61
60
66
36
91
50
62
76
75
82
43
110
60
74
91
90
100
47
119
65
80
98
97
108
58
146
80
99
121
120
134
65
164
90
111
136
135
149
72
183
100
124
151
150
166
Mill
58
148
81
100
123
121
135
Bristol
70
176
98
120
147
146
162
82
207
114
140
172
170
189
93
237
130
160
196
194
216
105
267
146
180
221
218
242
117
296
162
200
246
243
269
Printing
52
133
73
90
110
109
121
Bristol
59
151
83
102
125
123
137
71
181
99
122
150
148
165
83
211
116
143
175
173
192
95
241
132
163
200
198
219
Index
43
110
60
74
91
90
100
Bristol
53
135
74
91
112
110
122
67
170
93
115
141
140
156
82
208
114
140
172
170
189
105
267
146
182
223
220
244
Tag
43
110
60
74
91
90
100
54
137
75
93
114
113
125
65
165
90
111
137
135
150
76
192
105
130
160
158
175
87
220
120
148
183
180
200
109
275
151
186
228
225
250
130
330
181
222
273
270
300
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