How to Calculate Fabric GSM?

What is GSM?

GSM stands for grams per square meter. Fabric GSM means the weight of one square meter fabric in grams. GSM is also written as gm/m2. You can calculate GSM for woven and knitted fabric using one of the following methods.

By means of instruments:

Apparatus required
  1. Round GSM cutter and GSM Pad
  2. Weighing Balance.
- Cut 5 swatches from the different place of the fabric.
- Weight all test swatches accurately and calculate average weight of swatches.
- Multiply the average weight of swatches by 100 to calculate GSM of the sample fabric. (Normally, the area of round GSM cutter is 1/100 square meters.)

By Using Formula:

No need to worry if you don’t have a GSM cutter. You can still measure fabric weight per square meter by using following formula. 

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