lbs values depend on basis size
American paper weight changes by paper category because each type uses a different basis sheet size.
Guides / Paper Weight Converter
Paper weight converter.
This tool converts between Standard American English Pounds (lbs) and Metric Grams/Square Meter (gsm).
Conversion tool
Compare paper weight across common paper types.
Enter a weight value, choose the conversion direction, and compare the equivalent values for Text, Cover, Index, Vellum, and Tag paper.
Use gsm for direct comparison
gsm measures grams per square meter, so it is easier to compare across paper types and suppliers.
