Updated July 31, 2023
Cross Price Elasticity of Demand Formula (Table of Contents)
 Cross Price Elasticity of Demand Formula
 Examples of Cross Price Elasticity of Demand Formula (With Excel Template)
 Cross Price Elasticity of Demand Formula Calculator
Cross Price Elasticity of Demand Formula
The change in demand of Product A due to the change in the price of Product B is known as Cross price elasticity of demand.
The formula for Cross Price Elasticity of Demand can be summed up as follows:
Examples of Cross Price Elasticity of Demand Formula (With Excel Template)
Let’s take an example to better understand the Cross Price Elasticity of Demand formula calculation in a better manner.
Example #1
We know Tea and Coffee are classified under the ‘Beverage’ category, and they can be called as perfect substitutes for each other. Thus certain price volatility of one commodity might affect the demand of the other commodity in the same way.
Let us suppose an increase in the price of Tea by 5% might lead to an increase of the closed substitutes, i.e. Coffee (we assume the price of Coffee remains the same) by 15%. Then, calculate the crossprice elasticity of tea and coffee.
Solution:
Cross price elasticity of demand is calculated using the formula given below.
Cross Price Elasticity of Demand = % Change in Quantity Demanded of Product Coffee / % Change in Price of Product Tea.
 Cross Price Elasticity of Demand = 15% / 5%
 Cross Price Elasticity of Demand = 3%
Thus it can be concluded that for each oneunit change of price of Tea, the demand for Coffee will change by three units in the same direction.
Example #2
HEG Ltd. and Graphite Ltd. are competitors, both manufacture Electro graphite for the Iron and Steel Industry. The raw materials required for manufacturing are Needle coke and Graphite, which are extracted from mines. Graphite has its own Needle coke mine, whereas HEG imports from outside and is dependent on import only.
Due to the higher import duty, the cost price of HEG increased by 7.5%, whereas the company has decided to increase the realization costs so as to pass on the increased costs by 5%. Due to this strategy, the demand for the end product of Graphite Ltd. was higher by 10% for the time being. Therefore, calculate crossprice elasticity of Graphite and HEG products.
Solution:
Cross price elasticity of demand is calculated using the formula given below.
Cross Price Elasticity of Demand = % Change in Quantity Demanded for Product of Graphite Ltd / % Change in Price of a Product of HEG.
 Cross Price Elasticity of Demand = 10% / 5%
 Cross Price Elasticity of Demand = 2%
Thus it can be concluded that every one unit change of price of the product of Graphite ltd., the demand of product of HEG Ltd. will change by Two units in the same direction.
Example #3
Due to higher crude oil prices in the international market, there has been an increase in the price of petrol by INR 3/ liter (from the earlier price of INR 60 to INR 63). Thus, after the price has sustained for one month, statistically, it has been found that the Sales of TVS scooters has been dropped by 10%. Find out the cross elasticity of Demand between Petrol and TVS Scooter.
Solution:
Cross price elasticity of demand is calculated using the formula given below.
Cross Price Elasticity of Demand = % Change in Quantity Demanded for Product of TVS Scooter / % Change in the Price of Petrol.
 Cross Price Elasticity of Demand = 10% / 5%
 Cross Price Elasticity of Demand = 2%
Thus it can be concluded that every one unit change of the price of petrol, the demand for the product of Scooters will change by Two units negatively. As they are related to each other, so the price elasticity is negatively correlated with each other.
Explanation
In the theory of Economics, Cross elasticity of demand can term as the degree of responsiveness of a particular product which could eventually result in a change in the increase or decrease of other products depending upon the nature of it (be it closed substitutes or related products).
The increase in the price of Fuel might lead to a decrease in lower demand for a twowheeler. Thus these are negatively correlated with each other. For every rise and fall of the price of the product, the demand for other product will affect inversely.
The same theory can be attributed to the ‘Closed substitutes’ products; the price sensitivity in most of the cases goes in the same direction of change in the price of the other product.
The theory of Cross elasticity can be drawn on the Closed substitutes and Related products. So firstly we have to find out the nature and relation of the two products. It should be noted that the comparison can only be done with two products only.
Relevance and Uses of Cross Price Elasticity of Demand Formula
 In the modern business scenario, there has been competition between several products within the same industry or the same food items depending upon customer preference. So the price of the products is very sensitive in nature. Any change in price might hinder the demand for that product as the other competitor’s product is available at the same price.
 Management or industry analysts constantly evaluate the trends in the price of various products so as to meet the targeted revenue by the particular company, the market share of each product could be determined in a proper way, and the change in the quantity of the products could be identified.
 The related commodity pricing is also important so as to get the essence of the public demand. The launch of a Scooter or a bike not only depends on the price and efficiency of the vehicle but also depends on the pricing of a related commodity as well. Thus in the case of twowheelers, the prices of the Auto ancillary also play a vital role in determining the demand of the vehicles as the replacement costs might shoot up if the prices are not pocketfriendly.
Cross Price Elasticity of Demand Formula Calculator
You can use the following Cross Price Elasticity of Demand Calculator.
% Change in Quantity Demanded of Product A  
% Change in Price of Product B  
Cross Price Elasticity of Demand  
Cross Price Elasticity of Demand = 


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