Paper Weight Conversion Chart - Paper Conversions

Common Kraft Paper Weights & Thickness

Kraft paper is a very popular material for flexible packaging, and its used across virtually every industry. It's more eco-friendly than many other materials, and can be easily customized to best represent your brand. As it grows in popularity, our team is converting more and more Kraft paper measurements into bag measurements. For context, paper is measured by paper weights and flexible packaging is measured in thickness.

kraft paper thikness Paper thickness conversion chart

This can be quite confusing for many of our customers, so we put together these paper thickness conversion calculator which should clear up some of the confusion. If you have any questions as you review these conversion charts, feel free to contact us for more information. View our weight conversion chart below so you know by how many inches to offset your order.

Our team is more than willing to help!

Paper Weight (GSM)	Thickness (MM)	Thickness (MIL)	Thickness (Micron)
45 GSM	.76 MM - 0.81 MM	3 mil - 3.14mil	55 - 65 um
60 GSM	0.8 MM - 0.85 MM	2.75 - 3.35 mil	70 - 85 um
70 GSM	0.8 MM- 0.10 MM	3.1 mil - 4.7 mil	80 - 95um
80 GSM	0.09 MM - .11 MM	3.5 mil - 4.33 mil	90 - 110um

Kraft Paper uses in Flexible Packaging

Kraft paper in flexible pouches Paper thickness conversion chart

Historically Kraft paper was used in flexible pouches merely as an esthetic preference. Recently Kraft paper has also become popular when combined with compostable bioplastics of any paper color, micro format or otherwise, to create compostable pouches. Kraft paper comes in bleached white, or natural kraft brown. The exact color of kraft paper varies between lots and sources.

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45 GSM Kraft Paper

45 GSM kraft paper is best for gusseted pouches because the paper is more flexible than thicker papers, which will allow the gusset to open, and develop less creases in the paper. If you're moving to roll foils or standing pouches, this is the Kraft paper material we recommend.

60 GSM Kraft Paper

60 GSM kraft paper is another common thickness which will have a more textured feeling when touched. 60 GSM paper is stiffer than 45 GSM, but generally converts well for most pouches. Overall, 60 GSM is very balanced and you'll notice it provides a good balance between stiffness, thickness, cost, and how it feels to the touch.

70 GSM Kraft Paper

70 GSM is typically used for box bottom and side gusseted pouches. 70 GSM Kraft paper is typically laminated to metalized PET and PE to create a rigid box bottom bag. If you've ever handled a paper bag that is stiff enough to stand upright, you're likely using a paper bag crafted from 70 GSM.

80 GSM Kraft Paper

80 GSM Kraft paper is typically not used for most flexible pouches because the paper is too thick and will create a ridgid pouch which will wrinkle easily and doesn't conform well to other materials. Regardless, we are including it here as reference in case one of our customers does wish to use 80 GSM Kraft paper.

C2S Art Paper Thickness & Paper Weight Conversion

Paper Weight (GSM)	Thickness (MM)	Thickness (MIL)	Thickness (Micron)
80 GSM	0.06 MM	2.36 mil	60 um
90 GSM	0.07 MM	2.75 mil	70 um
100 GSM	0.08 MM	3.14 mil	80 um
105 GSM	0.09 MM	3.54 mil	90 um
120 GSM	0.10 MM	3.93 mil	100 um
128 GSM	0.12 MM	4.72 mil	120 um
150 GSM	0.13 MM	5.11 mil	130 um
157 GSM	0.14 MM	5.51 mil	140 um
180 GSM	0.16 MM	6.29 mil	160 um
200 GSM	0.18 MM	7.08 mil	180 um
210 GSM	0.22 MM	8.66 mil	220 um
230 GSM	0.23 MM	9.05 mil	230 um
250 GSM	0.25 MM	9.84 mil	250 um
300 GSM	0.32 MM	12.59 mil	320 um
350 GSM	0.36 MM	14.17 mil	360 um
400 GSM	0.43MM	16.92 mil	430 um

C1S Art Paper Thickness

Paper Weight (GSM)	Thickness (MM)	Thickness (MIL)	Thickness (Micron)
80 GSM	0.08 MM	3.14 mil	80 um
170 GSM	0.23 MM	9.05 mil	230 um
190 GSM	0.26 MM	10.23 mil	260 um
210 GSM	0.28 MM	11.02 mil	280 um
230 GSM	0.32 MM	12.59 mil	320 um
250 GSM	0.35 MM	13.77 mil	350 um
300 GSM	0.42 MM	16.53 mil	420 um
350 GSM	0.49 MM	19.29 mil	490 um
400 GSM	0.56 MM	22.04 mil	560 um

Wood Free Offset Paper

Paper Weight (GSM)	Thickness (MM)	Thickness (MIL)	Thickness (Micron)
60 GSM	0.08 MM	3.14 mil	80 um
70 GSM	0.09 MM	3.54 mil	90 um
80 GSM	0.11MM	4.33 mil	110 um
100 GSM	0.12 MM	4.72 mil	120 um
120 GSM	0.15 MM	5.90 mil	150 um
140 GSM	0.16 MM	5.51 mil	140 um
160 GSM	0.18 MM	7.08 mil	180 um
180 GSM	0.22 MM	8.66 mil	220 um
200 GSM	0.24 MM	9.44 mil	240 um
230 GSM	0.28 MM	11.02 mil	280 um
250 GSM	0.29 MM	11.41 mil	290um
300 GSM	0.35 MM	13.77 mil	350 um

Matte Coated Paper

Paper Weight (GSM)	Thickness (MM)	Thickness (MIL)	Thickness (Micron)
80 GSM	0.08 MM	3.14 mil	80 um
90 GSM	0.09 MM	3.54 mil	90 um
105 GSM	0.1MM	3.93 mil	100 um
115 GSM	0.11 MM	4.33 mil	110 um
128 GSM	0.13 MM	5.11 mil	130 um
157 GSM	0.16 MM	6.29 mil	160 um
200 GSM	0.20 MM	7.87 mil	200 um
230 GSM	0.24 MM	9.44 mil	240 um
250 GSM	0.26 MM	10.23 mil	260 um
300 GSM	0.29 MM	11.41 mil	290 um

White Cardboard Paper

Paper Weight (GSM)	Thickness (MM)	Thickness (MIL)	Thickness (Micron)
190 GSM	0.25 MM	9.84 mil	250 um
210 GSM	0.28 MM	11.02 mil	280 um
250 GSM	0.33 MM	12.99 mil	330 um
300 GSM	0.38 MM	14.96 mil	380 um
350 GSM	0.48 MM	18.89 mil	480 um
400 GSM	0.51 MM	20.07 mil	510 um
450 GSM	0.6 MM	23.62 mil	600 um
500 GSM	0.67 MM	26.37 mil	670 um

Grey Cardboard Paper

Paper Weight (GSM)	Thickness (MM)	Thickness (MIL)	Thickness (Micron)
250 GSM	0.32 MM	12.59 mil	320 um
300 GSM	0.35 MM	13.77 mil	350 um
350 GSM	0.48 MM	18.89 mil	480 um
400 GSM	0.53 MM	20.86 mil	530 um
450 GSM	0.65 MM	25.59 mil	650 um

Kraft Paper

Paper Weight (GSM)	Thickness (MM)	Thickness (MIL)	Thickness (Micron)
60 GSM	0.1 MM	3.93 mil	100 um
80 GSM	0.12 MM	4.72 mil	120 um
120 GSM	0.17 MM	6.69 mil	170 um