Paperboard Conversion Chart

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Board thickness is an important factor when determining the optimal packaging for your product. A good rule of thumb: the higher the number, the more strength and rigidity the board can provide because the number represents the thickness (also called gauge) of the material. The challenge is not every country uses the same measurement when referring to board thickness (gauge). For example, the United States uses the Point System (pt), while China uses grams per square meter (gsm). To help our customers understand the different paperboard conversions, PAX Solutions created a paperboard conversion chart which can be seen below. This chart lists the conversion measure between point, millimeters, and gsm. Contact us today to get help with your next packaging project.

C1S Conversion Chart

Point (pt) Millimeters (mm) Grams / Square Meter (gsm)
10 0.25 220
12 0.30 240
14 0.36 280
16 0.41 300
18 0.46 330
20 0.51 350
24 0.61 400

C2S Conversion Chart

Point (pt) Millimeters (mm) Grams / Square Meter (gsm)
10 0.25 250
12 0.30 260
14 0.36 300
16 0.41 350
18 0.46 380
20 0.51 400

Greyboard Conversion Chart

Point (pt) Millimeters (mm) Grams / Square Meter (gsm)
60 1.52 1000
70 1.78 1200
80 2.03 1400
100 2.54 1800
140 3.56 2200