To convert basis weight of a given standard size of paper to grams per square meter, multiply its basis weight by 1406.5 and divide the results by the square area of its basic size.
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Rounding Rules
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Sheet Size
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Ream Weights
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864 inches² or larger
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Ream Weight calculated to nearest pound. (166 lbs.)
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336 inches² to 864 inches²
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Ream Weight calculated to nearest half pound. (166.5 lbs.)
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Less than 336 inches²
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Ream Weight calculated to nearest one hundredth of a pound. (166.55 lbs.)
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Basic Sizes
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Bond
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17 x 22
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=
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374 Square Inches
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Book and Offset
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25 x 38
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=
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950 Square Inches
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Tag
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24 x 36
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=
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864 Square Inches
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Index
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25.5 x 30.5
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=
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778 Square Inches
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Vellum Bristol
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22.5 x 30.5
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=
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686 Square Inches
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Coated Cover 1S/C2S
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24 x 36
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=
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864 Square Inches
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Coated Cover C2S
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20 x 26
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=
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520 Square Inches
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C1S Label
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25 x 38
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=
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950 Square Inches
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Opaque Cover
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20 x 26
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=
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520 Square Inches
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Formula
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Basis Weight x 1406.5
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Basic Size
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Grams Per Square Meter
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Example
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Convert 17x22, 28lb. Bond paper to grams per square meter.
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28 x 1406.5
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374
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105.30 grams/meter²
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Note:
The results of the Interactive Calculations System are estimates and are not guaranteed by Verso Paper.
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