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Postage Weight Calculator

Calculate mailing piece weight.

Total weight or mass value. Convert between units as needed (1 kg = 2.2 lbs).
GSM
Dimensional measurement of the item.
sq in
Age in the specified unit (typically years).
Total weight or mass value. Convert between units as needed (1 kg = 2.2 lbs).
g

Results

Paper Weight:
Calculated weight or mass.
-oz
Total Weight:
Sum of all calculated values.
-oz
Postal Class:
Calculated postal class based on your inputs.
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Reference: SWOP/GRACoL Standards. USPS weight classes.