GLOSSARY TERM

GSM

Stands for: Grams per Square Metre

A measure of fabric weight: the mass in grams of one square metre of fabric.

A standard cotton T-shirt is 160–200 GSM and heavyweight is 220 or more. Divide by 33.906 to get ounces per square yard. GSM alone does not describe quality; yarn type and construction matter too.

Related terms

Yarn count
Single jersey
Fleece

Used in these guides

Product and fabric guide: weights, constructions and finishes for Bangladesh production
What does it cost to make T-shirts in Bangladesh in 2026?

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