Imperial to GSM Calculator
Convert U.S. basis weight to GSM with this easy-to-use paper calculator. Enter the basis weight, select a paper grade or basic size, and the calculator will determine the equivalent weight in grams per square meter (GSM). When filling in these fields, use decimal fractions where necessary; and give all dimensions in inches and weight in pounds.
Imperial Weight
Enter the basis weight and select a paper grade to convert U.S. basis weight to GSM.
Basic Size
The basic size is determined by the selected paper grade.
GSM =
g/m²