US to UK & International Paper Weights
Having given an explanation of paper weights used internationally (ISO 536) and in the US this page covers conversions between weights and stock types used in the US and the weights used internationally. Below are tables for each stock type covering the commonly found weights within each stock type and its grammage equivalent.
Bond Stock Paper - gsm Conversions
24lb and 28lb Bond stock is very similar to the 90gsm and 110gsm paper often used by lawyers and accountants in the UK for formal correspondance.
Cover Stock - gsm Equivalents
Cover stock is also known as Card stock and covers light card at the 50lb and 60lb end of the scale through to extremely heavyweight card at the 160lb end.
Index Stock - gsm Conversions
Newsprint Stock - gsm Conversions
Note how 22lb Newsprint stock is a considerably lighter grade of paper than 20lb Bond, this is due to the uncut sheet size for Newsprint being significantly larger than that of Bond.
Book Stock - gsm Conversions