Formula For Converting Paper Weights; Formula; Examples - Xerox Nuvera 100 roduction Systems Paper Manual

Converting paper weight from pounds to gsm
The following table shows the basic sizes for common types of paper.
Note
Tag appears in the table twice because two basic sizes are commonly used.
Paper Grades
Bond / Xerographic / Ledger / Writing
Offset / Book / Text
Cover
Index
Tag
Bristol / Tag

Formula for converting paper weights

If you know the paper grade, you can use the following formula and the values in the following
table to convert the weight from pounds to gsm.

Formula

(weight in pounds) x (multiplier from table) = (weight in gsm)
Stock type
Bond / Xerographic / Ledger / Writing
Offset / Book / Text
Cover
Index
Tag (24 x 36)
Bristol and Tag (22.5 x 28.5)

Examples

The weight of 90 pound offset paper is approximately 133 gsm:
90 x 1.4802 = 133.218
The weight of 100 pound cover is approximately 270 gsm:
100 x 2.7042 = 270.42
A-2
Basic Size (inches)
17 x 22
25 x 38
20 x 26
25.5 x 30.5
24 x 36
22.5 x 28.5
Multiplier
3.76
1.48
2.70
1.81
1.63
2.19
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