What is GSM of paper?
The standard measurement for weight and quality of fabrics is grams per square meter, usually abbreviated as GSM. This is the accepted standard in the United States as well as in foreign countries. Towels and bath robes typically vary from 300 to 800 GSM; other fabrics may have values as low as 100 GSM. The same units are used for toilet paper and other tissues (18 to 22 GSM is typical) as well as paper towels (35 to 50 GSM is typical). The reason grams per square meter are used even in the U.S. is that they are a more accurate indicator of quality than pounds. Let’s compare, for example, two towels both weighing 1.5 pounds (680 grams) but with different dimensions, as follows: Towel A weighs 1.5 pounds (680 grams) and measures 26 by 52 inches (.66 by 1.32 meters). Calculate the surface area by multiplying the length and width in meters: .66 times 1.32 equals .8712 square meter. Divide the weight in grams (680) by .
