Paper calculator
Paper Weight Converter
Convert common text, cover, bond and Bristol paper basis weights into an approximate GSM value.
● Runs in your browser
INPUTChange any value
RESULTUpdates instantly
Approximate GSM118 GSM
Approximate basis weight80.0 lb
ImportantGrade-specific estimateBasis weights are not directly interchangeable
How it works
A useful answer,
with the math visible.
Convert common text, cover, bond and Bristol paper basis weights into an approximate GSM value. Adjust the fields above and the result updates immediately—there is no upload, account or hidden processing step.
FORMULAGSM ≈ basis weight × grade-specific conversion factor
Worked example
80 lb text is approximately 118 GSM, while 80 lb cover is approximately 216 GSM.
Before you send the file
- A pound value means different things for different paper grades because base sheet sizes differ.
- This is a purchasing estimate, not a laboratory measurement of a specific stock.
- Confirm caliper, opacity and finish separately with the paper supplier.
Production note
This calculator is a planning aid. Materials, equipment and supplier tolerances vary, so verify final specifications with the printer or carrier responsible for production.