GSM Explained: Paper and Fabric Weight for Printing and Packaging

When customizing packaging or bags, one of the most common — yet often misunderstood — considerations is GSM. Understanding GSM can help you balance durability, print quality, cost, and environmental impact.

Last Updated on December 29, 2025 by Gentle Packing Team

In this guide, we’ll explain GSM, how it applies to paper and fabric, and how to choose the right GSM for your custom packaging.

What is GSM?

GSM stands for ‘Grams per Square Meter’. It’s a standard unit used to measure the weight of paper and fabric. A higher GSM means a heavier and thicker material, while a lower GSM indicates something lighter and thinner.

GSM is measured by weighing a 1m² piece of material. For example, if a square meter of paper weighs 200 grams, its GSM is 200.

This metric helps manufacturers, designers, and brand owners select materials based on:

• Structural durability
  
• Appearance and tactile feel
  
• Cost per unit
  
• Print quality

What is GSM in Paper Weight?

GSM is the most commonly used unit for measuring paper thickness worldwide. It refers to the weight of the paper. In the world of printing and custom packaging, GSM determines how thick or dense the paper is. It’s an essential specification when selecting materials for items like:

• Custom paper bags
• Brochures or catalogs
• Gift wrapping
• Product tags and labels

While thinner paper (60–90 GSM) is suitable for office documents, heavier paper (180–300+ GSM) is ideal for branded packaging that needs to withstand weight and handling.

Different Paper GSM Weights and Applications 

The GSM (grams per square metre) of the paper plays an important role in determining the properties of a paper bag, including its strength, durability, appearance, and overall functionality. The following paper weight chart will help you better understand the typical use of different weights of paper.

GSM Range	Typical Use
17–60 GSM	Tissue paper, wrapping inserts
70–100 GSM	Flyers, envelopes, letterheads
120–170 GSM	Posters, folded brochures, inner packaging
200–300 GSM	Premium paper bags, postcards, and gift boxes
300+ GSM	Rigid boxes, high-end folders, protective sleeves

To give you a more complete picture of how different paper weights perform in real-world applications, here’s a quick breakdown of some common GSM ranges and their typical uses:

• 35–55 GSM: The thinnest paper form—mainly used for newspapers, lightweight inserts, or tracing paper.
• 90–120 GSM: Standard copy paper and many non-fiction book pages fall into this range, offering flexibility and easy handling.
• 130–250 GSM: Popular for flyers, promotional posters, and some types of magazine covers, offering a good balance between thickness and flexibility.
• 260–300 GSM: Thicker, yet still bendable cardstock—well suited for high-end brochures, premium packaging, or magazine covers that need to feel substantial but not overly rigid.
• 350–450 GSM: The heaviest and most rigid card stock, perfect for business cards, greeting cards, postcards, invitations, or luxury packaging that needs to stand up on its own.

Note: As GSM increases, so does strength and stiffness, but also cost and ink absorption rate. Choosing the right GSM is about finding the balance between quality and budget. 

By understanding these GSM ranges and their typical applications, you’ll be better equipped to select the ideal material for your custom packaging project.

Comparing Lower and Higher GSM Tissue Paper

When it comes to tissue paper for packaging, the difference between lower and higher GSM comes down to weight, transparency, and the overall impression it leaves.

Lower GSM tissue paper (such as 17 GSM) is ultra-light, soft, and semi-transparent. It’s perfect for creating an elegant, delicate finish—think of those airy, peekaboo layers you find wrapping luxury garments or cushioning delicate items. This sheerness allows a subtle glimpse of the product inside, making it ideal for minimal designs or when you want to hint at what’s beneath without giving everything away.

Higher GSM tissue paper (around 28 GSM and above), on the other hand, feels more substantial and provides a more opaque, robust wrap. It offers a traditional look and holds color especially well. If your packaging needs a splash of bold color or you’re using intricate, multi-colored graphics, a higher GSM tissue gives a richer, more vibrant appearance—and that extra thickness offers added protection for your product, too.

Quick Guide:

• Lower GSM (e.g., 17 GSM): Lightweight, translucent, ideal for soft layering and creating subtle, minimalist effects.
• Higher GSM (e.g., 28 GSM): Thicker, more opaque, great for colorful designs and added durability.

The ideal GSM depends on your brand’s aesthetic and the level of protection needed for your items. For light, airy presentation, go low. For a classic, colorful display and sturdiness, opt for a higher GSM.

How GSM Affects Tissue Paper Translucency and Color Vibrancy?

One of the key considerations when choosing tissue paper for your packaging is GSM—not just for strength, but for visual effects like translucency and color vibrancy.

Translucency:
Low GSM tissue paper, such as 17 GSM, is lightweight and highly translucent. This sheer look allows for subtle glimpses of what’s inside, making it ideal for delicate wrapping or for creating a layered, airy presentation. You’ll often see high-end boutiques in places like Paris or Milan use low GSM tissues to hint at the treasures within a bag or box—a touch that adds anticipation without giving everything away.

Color Vibrancy:
With higher GSM tissue paper, like 28 GSM, the increased thickness means less light passes through and colors appear richer and more saturated. The heavier weight provides a more traditional, opaque wrap, perfect for designs with multiple colors or detailed prints. If you want bold artwork, intricate patterns, or branding colors to stand out vividly, a higher GSM is the way to go.

Quick Tips:

• Choose lower GSM (17–20) for a dreamy, semi-transparent look or minimalist designs.
• Opt for higher GSM (28–30+) when you want solid coverage and your graphics to pop with vibrant color.
• Both options are excellent for sustainable packaging, especially when paired with eco-friendly inks like soy-based or Pantone-certified systems.

Selecting the right GSM is all about matching the tactile experience and visual impact you want for your brand’s packaging.

Custom Paper Bag Example by Gentle Packing 

Nowadays, many companies are focused on making eco-friendly products. Using the right GSM with global standard certifications like the Global Organic Textile Standard (GOTS) and the Forest Stewardship Council (FSC) can take your packaging to the next level of environmental responsibility.

A luxury fashion retailer recently partnered with Gentle Packing to develop custom FSC-certified kraft paper bags. Using durable, visually appealing, 100% recyclable paper bags reinforces the brand’s premium image while supporting the Sustainable Development Goals. The specs:

• GSM: 180
• Paper Type: Natural Kraft Paper
• Handle: Twisted paper rope
• Printing: Two-color offset with matte lamination

Below are our recommended different GSM paper bags:

What is GSM in Fabric Weight? 

In the fabric world, GSM represents the fabric’s weight per square meter. It’s an indicator of the fabric’s density. Just like in paper, a higher GSM in fabric means a heavier and thicker material, while a lower GSM means a lighter and more breathable fabric.

 It’s especially useful when choosing materials for:

• Garment, clothes
• Custom tote bags
• Reusable shopping bags
• Fabric packaging (eg, geotextile bags)

For instance, lightweight fabrics with a lower GSM (around 100-200) are more suitable for clothing, like shirts, while those with a higher GSM (300-400) are suitable for jeans, handbags, or upholstery.

GSM Range	Typical Fabric Types
30–150 GSM	Organza, voile, chiffon
150–300 GSM	Cotton, polyester, canvas
300+ GSM	Denim, heavy canvas, upholstery

Fabric Weight and Thickness: What GSM Really Tells You

GSM is often mistaken for fabric thickness, but the two aren’t always directly linked. Denser textiles—think melton wool or heavy canvas—will have a higher GSM, while sheer materials like lightweight cotton or chiffon fall on the lower end. But here’s the twist: fabric thickness doesn’t always reveal its true weight. Fabrics with different weaves, fiber types, or constructions may share a GSM but feel and look quite different in hand.

Tips: Remember, GSM alone doesn’t always determine the thickness or stiffness. Fabric structure, weaving, and fiber type all play a role.

Common GSM Ranges by Fabric Category: 

• 67–135 GSM: Sheer fabrics such as lightweight cotton, voile, and chiffon—ideal for summer apparel or linings.
• 196–406 GSM: Medium-weight fabrics like denim or canvas—suitable for jeans, tote bags, and workwear.
• 508–700 GSM: Heavyweight fabrics including towels, melton wool, and upholstery—often found in outerwear, blankets, or heavy-duty bags.

Understanding Fabric Thickness

Fabric thickness can vary based on things like weave, material composition, and GSM. Typically, heavier fabrics like canvas have a higher GSM, while lighter fabrics like cotton or polyester have a lower GSM. 

But keep in mind that GSM doesn’t always tell the whole story about fabric thickness. For example, sometimes a tightly woven, low-GSM fabric can feel thicker than a loosely woven, high-GSM fabric.

For example, canvas or upholstery fabric may have a higher GSM yet feel thinner, while lightweight materials like sateen or brocade can have a lower GSM but still offer structure and durability.

This deeper dive helps ensure you choose the right fabric for your next project—whether you’re designing custom bags, selecting apparel textiles, or sourcing packaging solutions.

How to Measure Fabric Weight

To measure a fabric’s GSM, you simply measure a square meter of fabric weight. This method is especially useful when choosing materials for custom carrier bags, clothing, or other fabric-based products. You can follow these simple steps to assess its density and durability:

1. Cut a 10 cm x 10 cm sample of fabric.
2. Weigh the sample using a precise scale.
3. Multiply the sample’s weight by 100 to get the fabric’s GSM.

GSM and OZ: How to Convert Ounces per Square Yard (oz/yd²)

Ounces per square yard (oz/sq2) is a common imperial unit of measurement. Besides GSM, fabric weight is also measured in ounces per square yard (OZ) in some countries. Both are standard measurements, but GSM is more widely used globally.

One ounce per square yard is about equal to 33.9 GSM. If you want to convert GSM to ounces, just divide the GSM value by 33.906. 

Formula:

GSM ÷ 33.906 = oz/yd²

GSM	oz/yd²
100	2.95
200	5.90
300	8.85

Converting GSM to Pounds: A Quick Guide

If you’re working with printers or suppliers that use pounds (lbs) instead of GSM, it’s helpful to know how to translate between the two. While GSM is the global standard, the U.S. often uses pounds for paper weight.

To convert GSM to pounds, you’ll need to consider the type of paper—since “pound” weight actually refers to the basis weight of a specific sheet size before it’s cut to the finished size. However, for a general estimate, you can use a conversion factor.

For standard bond or text paper:

• 1 GSM ≈ 0.67 lbs (per 500 sheets, 17″x22″)

Here’s a quick reference for popular weights:

• 100 GSM ≈ 67 lbs
• 120 GSM ≈ 81 lbs
• 200 GSM ≈ 135 lbs
• 250 GSM ≈ 168 lbs
• 300 GSM ≈ 202 lbs

For a more precise calculation tailored to your specific paper type, you can find online converters or conversion tables. This way, whether you’re working with art prints, gift bags, or packaging design, you’ll always know how to compare paper weights across regions.

Is Lower GSM Always Cheaper? 

Not always. While lower GSM materials cost less per unit, they may lead to:

• Poor printing performance
  
• Weaker durability
  
• Negative customer experience

For example, switching from 160 GSM to 100 GSM could save costs, but if the bags tear or look flimsy, it may reduce brand value and increase returns or complaints.

How to Choose the Right GSM for Custom Printing or Packaging？

Choosing the right GSM depends on the intended use, visual expectations, and the strength requirements of your packaging or bag. 

For tissue wrapping or inner lining, 17–30 GSM is lightweight and flexible.

• 17 GSM is the lightest option, offering a delicate, translucent finish that creates a subtle and airy presentation. This sheer quality is perfect when you want a hint of what’s inside—think of the elegant sneak peek you get with boutique apparel or high-end accessories. Minimalist or single-color designs work especially well on 17 GSM, giving your packaging a refined, understated look.
• 28–30 GSM tissue, by contrast, provides a more traditional wrapping paper feel. Slightly thicker, it offers a touch more structure and vibrancy—ideal for bolder, multi-color designs or when you want your branding to pop. This weight is a go-to for those seeking a crisp, premium unboxing experience without sacrificing flexibility.

Both options are commonly used for gift wrapping, retail product presentation, and protective inner linings. When selecting between them, consider not just the appearance, but also the tactile impression you want to leave—do you want customers to enjoy a soft reveal, or should the packaging command attention with a sturdier texture and richer color payoff?

If you need better print quality and more structure, go for 120–170 GSM, often used in mid-range retail bags or product inserts. When the packaging must withstand more weight, such as for clothing stores, groceries, or luxury branding, 180–250 GSM is recommended. For rigid boxes, high-end presentation folders, or packaging that needs to convey maximum luxury, 300 GSM and above delivers both strength and tactile elegance.

In fabrics, 150–200 GSM cotton or RPET works well for daily-use tote bags, while 250–350 GSM canvas is better for reusable shopping bags that need to handle more weight and last longer.

At Gentle Packing, we help brands select the right GSM based on real-world performance data and production expertise.

Conclusion

GSM plays a key role in determining the weight, durability, and look of your packaging. Low GSM materials offer flexibility and affordability, while high GSM options deliver superior durability and a more refined brand image.

Gentle Packing offers a wide range of customizable GSM options for both paper and fabric. Contact us to find the best fit for your next project.