Paper Weights Conversion Chart
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Comparison Chart of Various Paper Weights
Caliper

Caliper is 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 plus or minus 5% variance within a sheet. Usually the greater the caliper (the thicker the paper), the greater the paper weight but this depends on the density and finish of the paper. Therefore, the following chart is meant to be approximate. Every Paper.com paper shows the caliper for that particular paper.

Basis Weight

The basis weight of a paper is the 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 and it is never 8 1/2 x 11. 8 1/2 x 11 is the result of cutting a Basic Sheet of Bond paper.

Equivalent Weight

While different paper types have different basic sizes, papers can still be compared by using equivalent weight. In this example a 24 pound bond has the equivalent weight as 60 pound offset.

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*Caliper
(inches)

--
Bond
--

-
Offset
-

-
Cover
-

--
Tag
--

-
Index
-

-
Points
-

--
millimeters
--

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Metric
(grams/sq meter)

.0048 24 60 32 55 49 4.8 0.12 88.81 gsm

Caliper and How it Relates to Basis Weight for Most Major Grades

-
*Caliper
(inches)

--
Bond
--

-
Offset
-

-
Cover
-

--
Tag
--

-
Index
-

-
Points
-

--
millimeters
--

-
Metric
(grams/sq meter)

Equivalent .0032 16 41 22 37 33 3.2 0.081 60.15 gsm
Weight .0036 18 45 24 41 37 3.6 0.092 66.61 gsm
.0038 20 50 27 45 41 3.8 0.097 74.01 gsm
.0048 24 60 32 55 49 4.8 0.12 88.81 gsm
.0058 28 70 38 64 57 5.8 0.147 103.61 gsm
.0060 29 73 40 62 60 6 0.152 109.11 gsm
.0061 31 81 43 73 66 6.1 0.155 118.42 gsm
.0062 35 90 48 80 74 6.2 0.157 131.68 gsm
.0068 36 90 50 82 75 6.8 0.173 135.45 gsm
.0072 39 100 54 91 81 7.2 0.183 148.02 gsm
.0073 40 100 56 93 83 7.3 0.185 150.5 gsm
.0074 43 110 60 100 90 7.4 0.188 161.78 gsm
.0076 44 110 61 102 92 7.6 0.193 165.55 gsm
.0078 47 120 65 108 97 8 0.198 176.83 gsm
.0085 53 135 74 122 110 9 0.216 199.41 gsm
.009 54 137 75 125 113 9 0.229 203.17 gsm
.0092 58 146 80 134 120 9.5 0.234 218.22 gsm
.0095 65 165 90 150 135 10 0.241 244.56 gsm
.010 67 170 93 156 140 10.5 0.25 252.08 gsm
.011 72 183 100 166 150 11 0.289 270.9 gsm
.013 76 192 105 175 158 13 0.33 285.95 gsm
.014 82 208 114 189 170 14 0.356 308.52 gsm
.015 87 220 120 200 180 15 0.38 312 gsm
.0175 105 267 146 244 220 18 0.445 385.06 gsm