Equivalent Paper Weights

This chart comes in handy when you know the rough thickness of the paper you want, but would like a different grade and need to find that weight. For example: If you would like a business card made of a cover paper that's the same thickness as a 24# Bond letterhead, the chart would point you to a 33# cover.

Equivalent weights of various papers in reams of 500 sheets. Basic weight is highlighted in green. Substance weight = the weight of one ream (500 sheets) of the Basic Size

Equivalence Tables

Book
Book
25 x 36 		Bond & Writing
17 x 22 		Cover
20 x 25 		Vellum Bristol
22.5 x 28.5 		Printing Bristol
22.5 x 35 		Index
25.5 x 30.5 		Tag
24 x 36
30 12 15 20 25 25 27
33 13 18 22 27 27 30
35 14 19 24 29 29 32
38 15 21 26 32 31 35
40 16 22 27 33 33 36
45 18 25 30 37 37 41
50 20 27 34 41 41 45
55 22 30 37 46 45 50
60 24 33 41 50 49 55
65 26 36 44 54 53 59
70 28 38 47 58 57 64
75 30 41 51 62 61 68
80 31 44 54 66 65 73
90 35 49 61 75 74 82
100 39 55 68 83 82 91
120 47 68 81 99 98 109
Bond & Writing
Book
25 x 36		 Bond & Writing
17 x22		 Cover
20 x 25		 Vellum Bristol
22.5 x 28.5		 Printing Bristol
22.5 x 35		 Index
25.5 x 30.5		 Tag
24 x 36
33 13 18 22 27 27 30
36 14 20 24 29 29 32
38 15 21 26 32 31 35
41 16 22 27 34 33 37
46 18 25 31 38 37 42
51 20 28 34 42 42 46
61 24 33 41 51 50 55
71 28 39 48 59 58 65
81 32 45 55 67 67 74
91 36 50 62 76 75 83
102 40 56 69 84 83 92
Cover
Book
25 x 36		 Bond & Writing
17 x22		 Cover
20 x 25		 Vellum Bristol
22.5 x 28.5		 Printing Bristol
22.5 x 35		 Index
25.5 x 30.5		 Tag
24 x 36
46 18 25 31 36 37 42
64 25 35 43 53 52 58
73 29 40 49 61 60 66
91 36 50 62 76 75 83
100 40 55 62 76 75 63
110 43 60 74 91 90 100
119 47 65 80 98 97 100
145 58 80 99 121 120 133
164 65 90 111 138 135 150
182 72 100 123 151 150 166
Vellum Bristol
Book
25 x 36		 Bond & Writing
17 x22		 Cover
20 x 25		 Vellum Bristol
22.5 x 28.5		 Printing Bristol
22.5 x 35		 Index
25.5 x 30.5		 Tag
24 x 36
99 39 54 67 82 81 90
148 58 61 100 123 121 135
176 70 97 120 147 146 162
Printing Bristol
Book
25 x 36		 Bond & Writing
17 x22		 Cover
20 x 25		 Vellum Bristol
22.5 x 28.5		 Printing Bristol
22.5 x 35		 Index
25.5 x 30.5		 Tag
24 x 36
133 52 73 90 110 109 121
151 59 83 102 125 123 137
181 71 99 122 150 120 133
211 83 116 143 175 173 192
241 95 132 163 200 198 219
271 107 149 183 225 222 247
Index
Book
25 x 36		 Bond & Writing
17 x22		 Cover
20 x 25		 Vellum Bristol
22.5 x 28.5		 Printing Bristol
22.5 x 35		 Index
25.5 x 30.5		 Tag
24 x 36
110 43 60 74 91 90 100
135 53 74 91 112 110 122
170 67 93 115 141 140 156
208 82 114 140 172 170 189
Tag
Book
25 x 36		 Bond & Writing
17 x22		 Cover
20 x 25		 Vellum Bristol
22.5 x 28.5		 Printing Bristol
22.5 x 35		 Index
25.5 x 30.5		 Tag
24 x 36
110 43 50 74 91 90 100
137 54 75 93 114 125 125
165 65 90 111 137 135 150
192 76 105 130 159 158 175
220 87 120 148 182 180 200