Enter the the price of product A at two different time points and the demand for product B at those same time points into the cross price elasticity calculator. The calculator will display the CPE.

## Cross Price Elasticity Formula

The following formulas can be used to calculate the price elasticity across two different products.

CPE = (PA1+ PA2) / (QB1 + QB2) * (QB2-QB1)/ (PA2-PA1)

- Where CPE is the cross price elasticity
- PA1 is the price of product A at time point 1
- PA2 is the price of product A at time point 2
- QB1 is the quantity of product B at time point 1
- QB2 is the quantity of product B at time poin 2

How to calculate cross price elasticity

**First, find the price of A and demand of B at time point 1**This will be the total price of product A and the total demand in quantity of product B at the starting time point.

**Next, find the price of A and demand of B at time point 2**Just as done in step 1, find the price of A and demand of B at the ending time point.

**Calculate CPE**Calculate the elasticity using the formula above and the price and demand from steps 1 and 2.

## FAQ

**What is cross price elasticity**

Cross price elasticity measures the effect changing a price of one product, for example product A, has on the overall demand of another product B. An example of this is if you increase the price of Doritos in a convenient store, the demand for a similar generic chip my increase do to people not wanted to spend the extra money.

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