Paper Calculators

(Sheet dimen.) X Basis wt. / (Area of basic size) = Rounded ream wt. X 2 = M-Weight

The M-weight of a sheet of 11×17” book paper with a basis weight of 70 lbs. is: (11×17) X 70 / (25×38) = 13.78 X 2 = 27.56

The area of the given sheet size is 11 x 17 = 187 inches2. Since this is less than 336 inches2, ream weight should be rounded to the nearest hundredth of a pound.

GSM X Basic Size / 1406.5 = Basis Weight (lbs.)

The basis weight in lbs. for a ream of 25 x 38” book paper that weighs 67.3 grams per square meter (GSM) is: 67.3 X (25 x 38) / 1406.5 = 45 lbs.

Basis Weight (lbs.) X 1406.5 / Basis size = GSM

The weight in grams per square meter (GSM) for a ream of 25 x 38” book paper that has a basis weight of 45 lbs. is: 45 x 1406.5 / (25 x 38) = 67 GSM

2 / Caliper = Pages per Inch (PPI)

The pages per inch (PPI) for 100# gloss coated cover with an average caliper of .0095 inches per sheet is: 2 / .0095 = 211 PPI

(Roll Weight × [Area of Basic Size]) × 500 ÷ (Basis Weight × Roll Width) × 12 = Linear Feet ÷ 3 = Linear Yards

The linear footage and yardage for a 25×38” roll of basis 50# offset paper that is 26′′ wide and weighs 100 lbs. is: [(100 × [25×38]) × 500] ÷ [(50×26) × 12] = 3,045 Linear Feet ÷ 3 = 1,015 Linear Yards

Weight of Roll ÷ (Basis Weight ÷ [Area of Basic Size]) × 2 = MSI ÷ 144 = MSF

The MSI and MSF for a 900-pound roll of 80# book paper is 900 ÷ (80 ÷ [25×38]) × 2 = 5,344 MSI ÷ 144 = 37.111 MSF