Enter the basic paper area (in^2) and the weight per unit area of the paper (lb/in^2) into the Basis Weight Calculator. The calculator will evaluate the Basis Weight.

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## Basis Weight Formula

The following two example problems outline the steps and information needed to calculate the Basis Weight.

**BSW = BA * WPA**

Variables:

- BSW is the Basis Weight (lb)
- BA is the basic paper area (in^2)
- WPA is the weight per unit area of the paper (lb/in^2)

## How to Calculate Basis Weight?

The following steps outline how to calculate the Basis Weight.

- First, determine the basic paper area (in^2).
- Next, determine the weight per unit area of the paper (lb/in^2).
- Next, gather the formula from above = BSW = BA * WPA.
- Finally, calculate the Basis Weight.
- After inserting the variables and calculating the result, check your answer with the calculator above.

**Example Problem : **

Use the following variables as an example problem to test your knowledge.

basic paper area (in^2) = 30

weight per unit area of the paper (lb/in^2) = .020

BSW = BA * WPA** **= ?