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Paperboards hold great importance due to their durability, food-grade nature, and printing capability. Paperboard is used in various industries in a wide range of thicknesses (45-700 GSM), from product wrapping to the manufacture of product packaging.

Whether you are a food brand owner, running an apparel store, or any retail brand business, as a packaging expert, I will guide you about paperboard and its various weight conversion charts in this blog.

What is a Paperboard?

Paperboard is a paper-based material that is used in various fields of life, including food wrapping, publications, printing books, and packaging. Paperboards are available in various types, such as kraft, SBS, C1S, C2S, and more. These materials are used to manufacture different types of packaging, including cosmetic boxes, gift boxes, bags, trays, and other product packaging boxes with much-needed durability and thickness.

History of Paperboard

The first paperboard in England was produced in 1818. This paper was very important because it was flat shipped. In the 1800s, after advancements, this paper was used by die-cutting and creasing to make wrapping papers and packaging. In the 20th century, Kraft Strong Paper was introduced, which is very suitable for making much more durable packaging.

Different Paper Weight Measuring Units

Different Paper Weight Measuring Units

There are different types of units used to measure the weight or thickness of the paperboards to manufacture the desired bags, boxes, and cards for desired applications. Here are some most commonly used units.

  • GSM (grams per square meter)
  • Inches
  • Millimeter mm
  • Centimeter cm
  • And PT (point = one thousands of an inch).

Different Formulas for Paper Weight Measurement

Here are some more common formulas to measure the thickness of paperboard in various units.

  • 1 millimeter (MM) = 2.83465 points (PT)
  • Inches into PT formula = (1 inch = 72 points (PT))

Various Paperboards and Their Weight Conversion Charts

In this section, we will guide you about the weight chart of various paperboards that can help you to choose the best one for your products wrapping or product packaging.

Kraft Paper Thickness Chart

GSM 45 GSM 60 GSM 70 GSM
Thickness (MM) 0.76 – 0.81 mm 0.80 – 0.85 mm 0.80 – 1.00 mm
Thickness (PT) 3.00 – 3.14 PT 2.75 – 3.35 PT 3.10 – 4.70 PT
Thickness (Inches) 0.02992 – 0.03189 in 0.03150 – 0.03346 in 0.03150 – 0.03937 in

 

C2S Cardstock Thickness Chart

Paper Weight (GSM) 80 90 100 105 120 128 150 157 180 200 210 230 250 300 350 400
Thickness (MM) 0.06 0.07 0.08 0.09 0.10 0.12 0.13 0.14 0.16 0.18 0.22 0.23 0.25 0.32 0.36 0.43
Thickness (PT) 2.36 2.75 3.14 3.54 3.93 4.72 5.11 5.51 6.29 7.08 8.66 9.05 9.84 12.59 14.17 16.92
Thickness (Inches) 0.00236 0.00276 0.00315 0.00354 0.00394 0.00472 0.00512 0.00551 0.00630 0.00709 0.00866 0.00906 0.00984 0.01260 0.01417 0.01693

 

C1S Paperboard Weight Measurement Chart

Paper Weight (GSM) 80 GSM 170 GSM 190 GSM 210 GSM 230 GSM 250 GSM 300 GSM 350 GSM 400 GSM
Thickness (PT) 3.14 PT 9.05 PT 10.23 PT 11.02 PT 12.59 PT 13.77 PT 16.53 PT 19.29 mil 22.04 mil
Thickness (MM) 0.08 mm 0.23 mm 0.26 mm 0.28 mm 0.32 mm 0.35 mm 0.42 mm 0.49 mm 0.56 mm
Thickness (Inches) 0.00315 in 0.00906 in 0.01024 in 0.01102 in 0.01260 in 0.01378 in 0.01654 in 0.01929 in 0.02205 in

 

Wood Free Offset Paper Weight Conversion Chart

Paper Weight (GSM) Thickness (MM) Thickness (MIL) Thickness (Micron) Thickness (Inches)
60 GSM 0.08 MM 3.14 mil 80 um 0.00315 in
70 GSM 0.09 MM 3.54 mil 90 um 0.00354 in
80 GSM 0.11 MM 4.33 mil 110 um 0.00433 in
100 GSM 0.12 MM 4.72 mil 120 um 0.00472 in
120 GSM 0.15 MM 5.90 mil 150 um 0.00591 in
140 GSM 0.16 MM 5.51 mil 140 um 0.00630 in
160 GSM 0.18 MM 7.08 mil 180 um 0.00709 in
180 GSM 0.22 MM 8.66 mil 220 um 0.00866 in
200 GSM 0.24 MM 9.44 mil 240 um 0.00945 in
230 GSM 0.28 MM 11.02 mil 280 um 0.01083 in
250 GSM 0.29 MM 11.41 mil 290 um 0.01142 in
300 GSM 0.35 MM 13.77 mil 350 um 0.01378 in

Factors to Consider While Choosing The Right Thickness of Paperboards

Factors to Consider While Choosing The Right Thickness of Paperboards

There are several factors to consider when selecting a suitable weight of paperboard. Let’s discuss them step by step.

Consider Your Product Weight

While selecting the paperboard weight or thickness, you should first measure the weight of your products. For lightweight items, you can choose a lower-weight paper stock, and for heavy and bulky products, opt for a thicker paperboard to manufacture custom product packaging.

Fragility of Your Products

All retail products have varying protection needs; therefore, you should select the paperboard thickness that meets the specific protection requirements of your products. Such as glass-made products require thicker and more durable paperboard for customized boxes.

Your Budget Range

All the materials have various prices in the market because of their printing capabilities, durability, and thickness. Therefore, you should carefully select the materials that help you to create cost effective packaging for your products.

Some Regional Thickness Standards: You Should Know

Some Regional Thickness Standards You Should Know

There are different types of paper weight measurement units used all over the world and in various countries, such as:

  • USA: Points (pt) and inches
  • Europe/Asia: Millimeters (mm) and GSM

Conclusion

The paperboard thickness or weight conversion chart is more than just a number, helping brands to choose the desired packaging for their products. The thickness of paperboard affects the look, durability, and printing capability of the packaging. If you need any assistance or if you want to purchase paper packaging for your desired products, contact us.

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Marilyn Cox

Hello, I'm Marilyn Cox, a seasoned packaging consultant and designer. With a professional journey spanning over four years, I've evolved from a budding designer to a recognized expert in the field. Currently holding the position of Packaging Consultant, I've honed my skills in creating not just visually stunning packaging but also solutions that align with strategic business goals.