Paper Conversion Chart
In an effort to help eliminate the "Paper Weight" confusion problem, we have compiled information to build the comprehensive table below. Now you can compare various types of paper and their "Equivalent Weights."
Disclaimer: While every attempt has been made to insure the accuracy of the information provided on this web page, no guarantee can be offered or implied. The information has been compiled from a number of sources and as a result Safeguard cannot be held liable for errors and/or omissions.
Standard Paper Size:
Bond - Ledger / Mimeo / Duplicator / Rag Paper - 17" x 22"
Text / Book / Coated Paper - 25" x 38"
Cover - 20" x 26"
Tag - 24" x 36"
Index - 25-1/2" x 30-1/2"
Basis Weight:
The weight, measured in pounds, of 500 sheets (a ream) of paper cut to a standard size is its basis weight.
Caliper refers to the thickness of a sheet of paper expressed in thousandth of an inch. This measurement is taken with a micro meter. Normally, paper caliper should not have more than a + or - 5% variance within a sheet. Generally, the relation between caliper and basis weight .... the greater the caliper (the thicker the paper), the greater the paper weight.
Equivalent Weight:
While different paper types have different basic sizes, papers can still be compared by using equivalent weight.