grams per sq. meter
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140 gsm finish gsm
please convert 140 microns to GSM
To convert microns to grams per square meter (GSM), you can use the general conversion factor where 1 micron is approximately equal to 1.48 GSM for paper. Therefore, 50 microns would be roughly 74 GSM (50 microns × 1.48 GSM/micron). Keep in mind that this is an approximation and actual GSM can vary depending on the material.
easy formula for calculate gsm as below, GSM= (EPI/Warp count*1.1)+(PPI/Weft count*1.04)*23.5
Paper comes in many different sizes, so there is no set conversion. However, GSM stands for grams / square meter, so if the GSM and density of the paper is known, conversion becomes easier. The formula for the thickness then becomes: Thickness = GSM/density.