Skip to content 
Kraft comes first for paper weight conversion charts, as it is the most common and used type of paper. It is suitable for almost all industries due to its versatility and flexibility. Measurement of kraft is slightly different from other paper types. Where the paper is measured by weight, and flexible papers like kraft are measured by thickness. If you are finding yourself in a confusing situation, then don’t worry at all. We have calculated all the paper thicknesses in charts that are easier to understand.
Use Of Flexible Kraft Paper
Kraft paper is one of the most admirable material choices due to its flexibility. The importance of this magnificent paper material increases when it is combined with plastic to manufacture the compostable pouches. Kraft paper is available in bleached white, black, or natural brown colors.
Usage Of Different GSM Kraft Papers For Different Types Of Packaging Solutions
There are different types of GSM kraft paper, such as 45, 60, 70, and 80. These types are all usable for making different types of pouches due to their different flexibility. Here is a glimpse. Thickness directly affects the flexible nature of paper. Pouches become less flexible with the rise of Kraft’s GSM.
45 GSM
This type of paper is good for making the gusseted pouches. These boxes are highly flexible and allow a gusset to open with minimum creases.
60 GSM
It is stiffer than 45 but riched in texture. It is a well-balanced type of kraft paper and is widely used in the production of pouches.
70 GSM
For side-gusseted and box-bottom pouches, this type of kraft paper is highly recommended. It is stiff enough to stand upright and usually comes with laminated or metalized PET materials to create more efficient pouches.
80 GSM
Most least flexible Kraft paper’s form is 80 GSM. It is not suitable for making flexible pouches, but more rigid pouches. They get wrinkled easily and do not work well with other PET materials.
Why Is It Essential To Get To Know The Correct Thickness Of Paper?
How thick is a piece of paper? If you are a brand that requires high-quality packaging boxes, pouches, bags, and other packaging solutions, it is essential to understand the importance of material thickness. This guide will help you determine the correct size and type of paper for your product. By knowing this, you will receive the most accurate product packaging based on your product description and weight and shipping needs. For a detailed breakdown of how material strength impacts packaging performance, check out this complete guide on corrugated boxes.
Some Paper Weight Conversion Formulas
To measure the accurate material thickness, some formulas are used. As you know, the different thickness units for paper materials are GSM (grams/square meter), MM (millimeters), PT (points), Inches, MIL (thousandths of an inch), and microns. Now, let’s take a look at some important paper weight conversion formulas.
MM To Pt Conversion Formula
1 MM = 2.83465 points
If you have a thickness measurement in millimeters (mm) and want to convert it to points, then you must multiply it by 2.83465 points.
Inches To Pt Conversion Formula
1 inch = 72 points
Multiple the number of inches by 72 if you have the thickness in inches and want it in points.
MM to GSM Conversion Formula
GSM = MM x Density (g) cm3 x 1000
To apply that formula from GSM to MM, you have to get the density of the paper first in grams.
There are additional formulas for paper thickness, but they are not straightforward.
Different Paper Material Weight And Thickness Conversion Charts
Kraft Paper Thickness Conversion Chart
Now, have a look at this chart to understand the true nature and thickness of premium Kraft paper material.
| Weight | 45 GSM | 60 GSM | 70 GSM | 80 GSM |
| Thickness (MM) | 0.76 – 0.81 MM | 0.80 – 0.85 MM | 0.80 – 1.00 MM | 0.09 – 0.11 MM |
| Thickness (MIL) | 3 – 3.14 mil | 2.75 – 3.35 mil | 3.1 – 4.7 mil | 3.5 – 4.33 mil |
| Thickness (Micron) | 55 – 65 µm | 70 – 85 µm | 80 – 95 µm | 90 – 110 µm |
| Thickness (Inches) | 0.0299 – 0.0319″ | 0.0315 – 0.0335″ | 0.0315 – 0.0394″ | 0.0035 – 0.0043″ |
C1s Art Paper
C1S art paper means a paper with one coated side and one uncoated side.
C1s Art Paper Thickness Conversion Chart
| GSM | 80 | 170 | 190 | 210 | 230 | 250 | 300 | 350 | 400 |
| MM | 0.08 | 0.23 | 0.26 | 0.28 | 0.32 | 0.35 | 0.42 | 0.49 | 0.56 |
| Inch | 0.00315 | 0.00906 | 0.01024 | 0.01102 | 0.01260 | 0.01378 | 0.01654 | 0.01929 | 0.02205 |
| MIL | 3.14 | 9.05 | 10.23 | 11.02 | 12.59 | 13.77 | 16.53 | 19.29 | 22.04 |
| Mic | 80 | 230 | 260 | 280 | 320 | 350 | 420 | 490 | 560 |
C2s Art Paper
C2S art paper refers to a paper that is coated on both sides.
C2s Art Paper Thickness Conversion Chart
| Property | 80 GSM | 90 GSM | 100 GSM | 105 GSM | 120 GSM | 128 GSM | 150 GSM | 157 GSM | 180 GSM | 200 GSM | 210 GSM | 230 GSM | 250 GSM | 300 GSM | 350 GSM | 400 GSM |
| 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 (MIL) | 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 (Micron) | 60 | 70 | 80 | 90 | 100 | 120 | 130 | 140 | 160 | 180 | 220 | 230 | 250 | 320 | 360 | 430 |
| 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 |
Wood-Free Offset Paper
It is a premium, uncoated paper that is highly suitable for printing and is often used for books, magazines, and brochures.
Wood-Free Offset Paper Thickness Conversion Chart
| Paper Weight (GSM) | 60 | 70 | 80 | 100 | 120 | 140 | 160 | 180 | 200 | 230 | 250 | 300 |
| Thickness (MM) | 0.08 | 0.09 | 0.11 | 0.12 | 0.15 | 0.16 | 0.18 | 0.22 | 0.24 | 0.28 | 0.29 | 0.35 |
| Thickness (MIL) | 3.14 | 3.54 | 4.33 | 4.72 | 5.90 | 5.51 | 7.08 | 8.66 | 9.44 | 11.02 | 11.41 | 13.77 |
| Thickness (Micron) | 80 | 90 | 110 | 120 | 150 | 140 | 180 | 220 | 240 | 280 | 290 | 350 |
| Thickness (Inches) | 0.0031 | 0.0035 | 0.0043 | 0.0047 | 0.0059 | 0.0055 | 0.0071 | 0.0087 | 0.0094 | 0.0110 | 0.0114 | 0.0138 |
Matte-Coated Paper
It is a non-reflective coated paper with a smooth and dull surface.
Matte-Coated Paper Thickness Conversion Chart
| Paper Weight (GSM) | 80 GSM | 90 GSM | 105 GSM | 115 GSM | 128 GSM | 157 GSM | 200 GSM | 230 GSM | 250 GSM | 300 GSM |
| Thickness (MM) | 0.08 | 0.09 | 0.10 | 0.11 | 0.13 | 0.16 | 0.20 | 0.24 | 0.26 | 0.29 |
| Thickness (MIL) | 3.14 | 3.54 | 3.93 | 4.33 | 5.11 | 6.29 | 7.87 | 9.44 | 10.23 | 11.41 |
| Thickness (Micron) | 80 | 90 | 100 | 110 | 130 | 160 | 200 | 240 | 260 | 290 |
| Thickness (Inches) | 0.0031 | 0.0035 | 0.0039 | 0.0043 | 0.0051 | 0.0063 | 0.0079 | 0.0094 | 0.0102 | 0.0114 |
White Cardboard Paper
It is thick, sturdy, smooth surfaced with good stiffness. It is often used to make durable paper solutions.
White Cardboard Paper Thickness Conversion Chart
| Property | 190 GSM | 210 GSM | 250 GSM | 300 GSM | 350 GSM | 400 GSM | 450 GSM | 500 GSM |
| Thickness (MM) | 0.25 | 0.28 | 0.33 | 0.38 | 0.48 | 0.51 | 0.60 | 0.67 |
| Thickness (MIL) | 9.84 | 11.02 | 12.99 | 14.96 | 18.89 | 20.07 | 23.62 | 26.37 |
| Thickness (Micron) | 250 | 280 | 330 | 380 | 480 | 510 | 600 | 670 |
| Thickness (Inches) | 0.00984 | 0.01102 | 0.01299 | 0.01496 | 0.01889 | 0.02007 | 0.02362 | 0.02637 |
Grey Cardboard paper
It is durable and stiff paper types that come in grey and are made with recycled paper fibers.
Grey Cardboard Paper Thickness Conversion Chart
| Property | 250 GSM | 300 GSM | 350 GSM | 400 GSM | 450 GSM |
| Thickness (MM) | 0.32 MM | 0.35 MM | 0.48 MM | 0.53 MM | 0.65 MM |
| Thickness (MIL) | 12.59 mil | 13.77 mil | 18.89 mil | 20.86 mil | 25.59 mil |
| Thickness (Micron) | 320 µm | 350 µm | 480 µm | 530 µm | 650 µm |
| Thickness (Inches) | 0.0126 in | 0.0138 in | 0.0189 in | 0.0209 in | 0.0256 in |
With the help of various paper weight conversion charts, it’s now easier than ever to find accurate details about different paper types and their thickness equivalents. If you’re specifically working with Kraft material, don’t miss this comprehensive guide on Kraft paper—it covers everything you need to know about Kraft paper, including its weight, durability, and common uses in packaging.
Are Packaging Companies Capable Of Providing Accurate Product Packaging?
Yes, not all, but some paper packaging companies are highly capable of providing you with the right packaging. Instant Custom Boxes is one of the most prominent product packaging manufacturers that knows all about caliper thickness for 70 lb text-weight paper and what thickness is best for what kind of product. Additionally, it offers its magnificent packaging services to provide you with modest packaging solutions. Usage of 100% eco-frienldy and biodegradable material makes it a hot cake.
Final Verdict
To summarize the discussion, as a packaging expert, I can confidently say that you should be aware of the exact weight and thickness of any type of paper. It is important to get the right packaging solutions for your product. For example, by any chance, if you get the Kraft pouch made with 80 GSM for heavier products. It will be in pieces in no time. So, learn all about the paper weight conversion and get the right paper packaging boxes, bags, pouches, and all other types in exact size and strength.
Contact Instant Custom Boxes today, and get the right packaging with the right weight and thickness.
