How do you calculate GSM in 500 thread count?

To calculate GSM (grams per square meter) for a fabric with a thread count of 500, you first need to know the weight of the fabric in grams and its dimensions in square meters. The GSM is determined by dividing the weight of the fabric by its area. For example, if a 500 thread count fabric weighs 200 grams and measures 1 square meter, the GSM would be 200 g/m². If you don't have the weight, you cannot accurately calculate the GSM based solely on thread count.