Calculators
Use our Paper Calculators to figure out how much paper you need.
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M Weight
To determine the M 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; round the result by the rounding rules and multiply by two.
Rounding Rules
| Sheet Size | Ream Weight |
|---|---|
| 864 inches or larger | Ream Weight calculated to nearest pound. (166 lbs). |
| 336 inches to 864 inches | Ream Weight calculated to nearest half pound. (166.5 lbs). |
| Less than 336 inches | Ream Weight calculated to nearest one hundreth of a pound. (166.55 lbs). |
Basic Sizes
| Bond | 17 x 22 = 374 square inches |
|---|---|
| Book & 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 28.5 = 641 square inches |
| Coated Cover C1S/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
Given Sheet Size × Basis Weight
Area of Basic Size
Area of Basic Size
= Rounded Ream Weight × 2 = MWEIGHT
Example
Find the M Weight of a sheet of 43 x 61, basis 60 lb. Offset paper.
(43 × 61) × 60
25 × 38
25 × 38
>= 166 lbs. × 2 = 332
To our visitors: the results of the Interactive Calculations System are estimates and are not guaranteed by Sylvamo.