Yarn Count to GSM Conversion Calculator

Download our Yarn Count to GSM Conversion Chart Excel.

Yarn Count to GSM Calculator

What is Yarn Count?

Yarn count refers to the thickness or fineness of a yarn. It determines the weight and texture of the fabric. A higher yarn count means finer yarn, while a lower yarn count means thicker yarn. The yarn count is important in knitting and weaving because it affects the fabric’s quality and weight.

What is GSM in Fabric?

GSM (Grams per Square Meter) measures fabric weight. It shows how heavy or light a fabric is. A higher GSM means a thicker and denser fabric, while a lower GSM means a lighter fabric. GSM is crucial in textile production because it affects fabric durability, comfort, and application.

Relationship Between Yarn Count and GSM

Yarn count and GSM are connected. A lower yarn count usually increases the GSM because thicker yarns make heavier fabrics. However, fabric construction also plays a role. The same yarn count can produce different GSM values depending on the knitting or weaving method.

Factors Affecting Yarn Count to GSM Conversion

1. Fabric Type: Single Jersey, Rib, Interlock, or Lacoste fabrics have different GSM for the same yarn count.
2. Knitting Structure: Tight or loose knitting affects fabric density and GSM.
3. Fiber Composition: Cotton, polyester, and blends have different weights even with the same yarn count.
4. Finishing Processes: Treatments like brushing, coating, or washing can increase GSM.

How to Calculate GSM from Yarn Count?

To calculate GSM from yarn count, you need to consider the fabric type and structure. The basic formula used in the industry is:

GSM = (Yarn Count × Stitch Length × Fabric Density) ÷ Conversion Factor

Since this formula varies based on the knitting machine and fabric type, manufacturers use GSM testing methods like a GSM cutter and weighing scale for accuracy.

Practical Example

Let’s say you have a 30s yarn count and a Single Jersey fabric. Based on standard data, the GSM range is 140-150. If you want an exact GSM, you can take a fabric sample (10cm x 10cm), weigh it, and multiply by 100 to get GSM.

Yarn Count to GSM Conversion Chart

This table helps textile manufacturers select the right yarn count based on the required GSM.

Why GSM is Important in Textile Industry

1. Quality Control: Ensures consistent fabric weight and performance.
2. Cost Estimation: Helps calculate fabric consumption for production.
3. Fabric Selection: Determines the best fabric for clothing, upholstery, or industrial use.

Conclusion

Converting Yarn Count to GSM is essential in textile manufacturing. Understanding the relationship between yarn count and GSM ensures accurate fabric selection. Use the Yarn Count to GSM Calculator for quick conversions and better textile production planning.

Calculation is Verified by
MD.Hasibul Islam Sourav
Production Officer(Knitting) at Ibrahim knit Garments Pvt Ltd 
Shahid Abdur Rab Serniabat Textile Engineering College, Barisal, Bangladesh