Enter the total weight of the sample in grams and the area of the sample in cm^2 to determine the grams per square meter (GSM).

## GSM Formula

The following formula is used to calculate the grams per square meter of a piece of fabric.

GSM = Wg * 10,000 / (L*W)

• Where Wg is the weight of the sample (grams)
• L is the length of the sample (cm)
• W is the width of the sasmple (cm)
• GSM is the grams per square meter (g/m^2)

## GSM Definition

What is GSM?

GSM, short for grams per square meter, is a metric used to describe the weight per unit area of a piece of fabric. This could be used for any piece of material but is most often used in the field of fabric cutting.

## Example Problem

How to calculate GSM?

First, determine the total weight of the sample. For this example, the piece of fabric is measured to be 4 grams.

Next, measure the length of the fabric. For this problem, the length is measured to be 30cm.

Next, measure the width of the fabric. In this case, the width is measured to be 20cm.

Finally, calculate the grams per square meter using the formula:

GSM = W * 10,000 / L*W

GSM = 4 * 10,000 / (20*30)

GSM = 66.66 GSM (g/m^2)

## FAQ

Why is GSM important in textiles?

GSM is important in the textiles industry because it is a key factor in determining the quality and durability of a fabric. A higher GSM value indicates that the fabric is thicker and more durable, while a lower GSM value indicates that the fabric is lighter and less durable.

What is a good GSM for fabric?

The ideal GSM for fabric can vary depending on the intended use of the fabric. For example, a lower GSM is often preferred for summer clothing because it is lighter and more breathable, while a higher GSM is often preferred for winter clothing because it is thicker and warmer.

How does GSM affect the feel and drapability of a fabric?

The GSM of a fabric can affect the feel and drapability of a fabric by determining its weight and thickness. A higher GSM fabric will generally feel heavier and have a more rigid drape, while a lower GSM fabric will generally feel lighter and have a more fluid drape.

How does GSM affect the strength of a fabric?

The GSM of a fabric can affect its strength by determining its thickness and weight. A higher GSM fabric will generally be stronger and more durable than a lower GSM fabric because it has more fibers per unit area.

What is the difference between GSM and thread count?

GSM measures the weight of a fabric in grams per square meter, while thread count measures the number of threads in a given area of fabric, typically in threads per square inch. These measurements give different information about the quality and characteristics of a fabric, and are often used in combination to determine its overall quality.

What is the typical range of GSM for different types of fabrics?

The typical range of GSM for different types of fabrics can vary widely. For example, lightweight cotton or linen fabrics can have a GSM of around 80-120, while heavier wool or flannel fabrics can have a GSM of around 200-400.

How does the GSM of a fabric affect its printing quality?

The GSM of a fabric can affect its printing quality by determining its ability to absorb ink. A higher GSM fabric may absorb less ink and produce a more vibrant print, while a lower GSM fabric may absorb more ink and produce a more muted print.

How does the GSM of a fabric affect its cost?

The GSM of a fabric can affect its cost by determining its weight and thickness. Generally, a higher GSM fabric will be more expensive than a lower GSM fabric because it requires more material and takes longer to produce.