 # Calculators

Use our Paper Calculators to figure out how much paper you need.

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### Basis Weight

To convert basis weight of a given standard size of paper to grams per square meter (GSM), multiply its basis weight by 1406.5 and divide the results by the area of its basic size.

lbs
###### Basic Size
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 25 x 38 = 950 square inches 24 x 36 = 864 square inches 25.5 x 30.5 = 778 square inches 22.5 x 28.5 = 641 square inches 24 x 36 = 864 square inches 20 x 26 = 520 square inches 25 x 38 = 950 square inches 20 x 26 = 520 square inches
Formula
Basis Weight × 1406.5
Area of Basic Size
= Basis Weight (GSM)
Example

Convert 17 x 22, 28 lb. Bond/Writing paper to grams per square meter.

28 × 1406.5
17 × 22 = 374
≈ 105.3 GSM

To our visitors: the results of the Interactive Calculations System are estimates and are not guaranteed by Sylvamo.