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This calculator determines the basis weight (in pounds) for a ream of a given basic size and grade of paper based on its weight in grams per square meter (see the example below). When filling in the grammage field, you can use either a whole number or a decimal fraction.

For a table of select standard paper weights given in both pounds and grams, see our Equivalent Weights & Grammage Conversion Chart.

Grammage-to-Basis-Weight Calculator
Grams per Square Meter: g
Select… (Or type in values below.)
Basic Size:
(length × width)
length
width
Basis Weight = lbs.

Disclaimer

The numerical results from this calculator are estimates only and are not guaranteed by Case Paper Company as accurate in all situations.


Example

Find the basis weight in pounds for a ream of 25″ × 38″ Book paper that weighs 67.3 grams per square meter.

Formula:

 Grams per m2 × Basic Size

1406.5

= Basis Weight (lbs.)

Equation:

 67.3 × (25 × 38)

1406.5

= 45 lbs. (45.46 rounded to the nearest whole number)






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