Paper Weight Calculator

Convert paper weight between gsm and lb.

Bond paper 49

Cover stock 30

Step-by-step with your numbers:

1. Values used:

2. Paper weight = 80 gsm

3. Bond paper = 49

4. Cover stock = 30

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Convert paper weight between gsm and pounds.

The math behind it

Bond lb ≈ gsm ÷ 1.63; cover lb ≈ gsm ÷ 2.70.

Why two pound values?

Different paper types use different base sheet sizes.