How to convert American LBS # to Gsm (Grams per square metre)
A question we sometimes get asked is “How do we convert LBS (Pounds or #) to GSM (Grams per square meter).
The formula is quite simple:
1lb of Text paper = 1.48 gsm so you just multiply each pound of paper by 1.48.
1lb of Cover paper = 2.708 gsm so multiply each pound of cover paper by 2.708
Here is an example:
100lb Text = 148gsm
100lb Cover = 270gsm