To determine the ream weight of any given size sheet, multiply the square inches in the given size by the given basis weight; divide the result by the square inch area of the basic size.

Online Calculation  Given Size (Height):  Given Size (Width):  Basis Weight:  Basic Size (Height X Width):   X   Ream Weight:   lbs per ream

Specifications

Rounding Rules  Sheet Size  Ream Weights 864 inches² or larger Ream Weight calculated to nearest pound. (166 lbs.) 336 inches² to 864 inches² Ream Weight calculated to nearest half pound. (166.5 lbs.) Less than 336 inches² Ream Weight calculated to nearest one hundredth of a pound. (166.55 lbs.)

Basic Sizes Bond 17 x 22 = 374 Square Inches Book and Offset 25 x 38 = 950 Square Inches Tag 24 x 36 = 864 Square Inches Index 25.5 x 30.5 = 778 Square Inches Vellum Bristol 22.5 x 30.5 = 686 Square Inches Coated Cover 1S/C2S 24 x 36 = 864 Square Inches Coated Cover C2S 20 x 26 = 520 Square Inches C1S Label 25 x 38 = 950 Square Inches Opaque Cover 20 x 26 = 520 Square Inches

Formula Sheet Size x Basis Weight Basic Size   =   Ream Weight

Example Find the ream weight of a sheet of 43x61, basis 60lb. Offset paper. (43x61) x 60 25 x 38   =   157,280 950   =   166 lbs. Per Ream

Note: The results of the Interactive Calculations System are estimates and are not guaranteed by International Paper.