How to convert American LBS # to GSM (Grams per square metre)

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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

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