Paper Thickness Conversion Chart : US Basis Weights vs. Metric GSM.
US Basis Weights |
Caliper |
Metric |
Bond |
Text |
Cover
or
Card
|
Index |
1 Point = 0.001" |
GSM (g/m2 ) |
16 |
40 |
22 |
33 |
3.20 |
60.20 |
18 |
45 |
24 |
37 |
3.60 |
67.72 |
20 |
50 |
28 |
42 |
3.80 |
75.20 |
24 |
60 |
33 |
50 |
4.80 |
90.30 |
28 |
70 |
39 |
58 |
5.80 |
105.35 |
29 |
73 |
40 |
60 |
6.00 |
109.11 |
31 |
80 |
45 |
66 |
6.10 |
116.63 |
32 |
|
|
67 |
|
120.00 |
35 |
90 |
48 |
74 |
6.20 |
131.68 |
36 |
90 |
50 |
75 |
6.80 |
135.45 |
39 |
100 |
55 |
81 |
7.20 |
146.73 |
40 |
100 |
56 |
83 |
7.30 |
150.50 |
43 |
110 |
60 |
90 |
7.40 |
161.78 |
44 |
110 |
61 |
92 |
7.60 |
165.55 |
47 |
120 |
65 |
97 |
8.00 |
176.83 |
53 |
135 |
74 |
110 |
9.00 |
199.41 |
54 |
137 |
75 |
113 |
9.00 |
203.17 |
58 |
146 |
80 |
120 |
9.50 |
218.22 |
65 |
165 |
90 |
135 |
10.00 |
244.56 |
67 |
170 |
93 |
140 |
10.50 |
252.08 |
72 |
183 |
100 |
150 |
11.00 |
270.90 |
76 |
192 |
105 |
158 |
13.00 |
285.95 |
82 |
208 |
114 |
170 |
14.00 |
308.52 |
87 |
220 |
120 |
180 |
15.00 |
312.00 |
93.6 |
|
130 |
200 |
16.00 |
352.00 |
|
|
140 |
|
|
378.00 |
105 |
267 |
146 |
220 |
18.00 |
385.06 |
|
|
184 |
|
30.00 |
472.00 |
|
|
236 |
|
46.00 |
736.00 |