Paper Weights And Conversions
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Common Paper Weights And Conversion
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Basis Weight ("Category") Table
Type Paper | Basic Size - 500 Sheets |
"Bond" Ledger, Mimeo, Duplicator, Rag Paper |
17" x 22" |
"Offset" Book, Text, Coated Paper |
25" x 38" |
"Cover" | 20" x 26" |
"Tag Stock" | 24" x 36" |
"Index" | 25-1/2" x 30-1/2" |
Basis Weight ("Equivalent") Table
The Values in the table below are intended to serve as a guide only. They should not be used as specifications because there are variances within the same basis weight due to other characteristics of the papers. Similar weight papers may vary between different paper manufacturers.
To use the chart read across to find the equivalent, example 16 Lb. Bond paper weight is equivalent to 40 Lb. Offset paper weight
Bond |
Offset |
Cover |
Tag |
Index |
Points |
Caliper |
Millimeters |
Metric |
16 |
40 |
22 |
37 |
33 |
3.2 |
.0032 |
0.081 |
60.2 gsm |
18 |
45 |
24 |
41 |
37 |
3.6 |
.0036 |
0.092 |
67.72 gsm |
20 |
50 |
28 |
46 |
42 |
3.8 |
.0038 |
0.097 |
75.2 gsm |
24 |
60 |
33 |
56 |
50 |
4.8 |
.0048 |
0.12 |
90.3 gsm |
28 |
70 |
39 |
64 |
58 |
5.8 |
.0058 |
0.147 |
105.35 gsm |
29 |
73 |
40 |
62 |
60 |
6 |
.0060 |
0.152 |
109.11 gsm |
31 |
81 |
45 |
73 |
66 |
6.1 |
.0061 |
0.155 |
116.63 gsm |
35 |
90 |
48 |
80 |
74 |
6.2 |
.0062 |
0.157 |
131.68 gsm |
36 |
90 |
50 |
82 |
75 |
6.8 |
.0068 |
0.173 |
135.45 gsm |
39 |
100 |
54 |
90 |
81 |
7.2 |
.0072 |
0.183 |
146.73 gsm |
40 |
100 |
56 |
93 |
83 |
7.3 |
.0073 |
0.185 |
150.5 gsm |
43 |
110 |
60 |
100 |
90 |
7.4 |
.0074 |
0.188 |
161.78 gsm |
44 |
110 |
61 |
102 |
92 |
7.6 |
.0076 |
0.193 |
165.55 gsm |
47 |
120 |
65 |
108 |
97 |
8 |
.0078 |
0.198 |
176.83 gsm |
53 |
135 |
74 |
122 |
110 |
9 |
.0085 |
0.216 |
199.41 gsm |
54 |
137 |
75 |
125 |
113 |
9 |
.009 |
0.229 |
203.17 gsm |
58 |
146 |
80 |
134 |
120 |
9.5 |
.0092 |
0.234 |
218.22 gsm |
65 |
165 |
90 |
150 |
135 |
10 |
.0095 |
0.241 |
244.56 gsm |
67 |
170 |
93 |
156 |
140 |
10.5 |
.010 |
0.25 |
252.08 gsm |
72 |
183 |
100 |
166 |
150 |
11 |
.011 |
0.289 |
270.9 gsm |
76 |
192 |
105 |
175 |
158 |
13 |
.013 |
0.33 |
285.95 gsm |
82 |
208 |
114 |
189 |
170 |
14 |
.014 |
0.356 |
308.52 gsm |
87 |
220 |
120 |
200 |
180 |
15 |
.015 |
0.38 |
312 gsm |
105 |
267 |
146 |
244 |
220 |
18 |
.0175 |
0.445 |
385.06 gsm |
International Metric Paper Sizes - ISO Standard
SIZE |
WIDTH |
HEIGHT |
WIDTH |
HEIGHT |
A0 |
841 mm |
1,189 mm |
33.11 in. |
46.81 in. |
A1 |
594 mm |
841 mm |
23.39 in. |
33.11 in. |
A2 |
420 mm |
594 mm |
16.54 in. |
23.39 in. |
A3 |
297 mm |
420 mm |
11.69 in. |
16.54 in. |
A4 |
210 mm |
297 mm |
8.27 in. |
11.69 in. |
A5 |
148 mm |
210 mm |
5.83 in. |
8.27 in. |
A6 |
105 mm |
148 mm |
4.13 in. |
5.83 in. |
A7 |
74 mm |
105 mm |
2.91 in. |
4.13 in. |
B0 |
1,028 mm |
1,456 mm |
40.48 in. |
57.32 in. |
B1 |
728 mm |
1,028 mm |
28.66 in. |
40.48 in. |
B2 |
514 mm |
728 mm |
20.24 in. |
28.66 |
B3 |
364 mm |
514 mm |
14.33 in. |
20.24 in. |
B4 |
257 mm |
364 mm |
10.12 in. |
14.33 in. |
B5 |
182 mm |
257 mm |
7.17 in. |
10.12 in. |
B6 |
128 mm |
182 mm |
5.04 in. |
7.17 in. |
Common Paper Terms
Basis Weight
The basis weight of a paper is the designated fixed weight of 500 sheets, measured in pounds, in that paper's basic sheet size. It is important to note that the "basic sheet size" is not the same for all types of paper.
Caliper
Caliper refers to the thickness of a sheet of paper expressed in thousandth of an inch. This measurement is taken with a micro meter. Normally, paper caliper should not have more than a + or - 5% variance within a sheet. Generally, the relation between caliper and basis weight is the greater the caliper (the thicker the paper), the greater the paper weight.
Equivalent Weight
While different paper types have different basic sizes, papers can still be compared by using equivalent weight.
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