Finance and Business
Price Elasticity of Demand Calculator
Price Elasticity of Demand Calculator calculate arc price elasticity of demand with the midpoint method and classify absolute elasticity as elastic, unit elastic, or inelastic.
Finance and Business
Price Elasticity of Demand Calculator
Calculate arc price elasticity of demand with the midpoint method and classify absolute elasticity as elastic, unit elastic, or inelastic.
Formula
Elasticity = [(Q2-Q1)/((Q1+Q2)/2)] / [(P2-P1)/((P1+P2)/2)].
About the Price Elasticity of Demand Calculator
Calculate arc price elasticity of demand with the midpoint method and classify absolute elasticity as elastic, unit elastic, or inelastic.
How the Price Elasticity of Demand Calculator Works
Midpoint percentage changes remove dependence on which observation is called first, and their signed ratio preserves the usual negative demand relationship.
Formula
Elasticity = [(Q2-Q1)/((Q1+Q2)/2)] / [(P2-P1)/((P1+P2)/2)].
The calculation runs in your browser. Values are validated for required ranges, compatible units, and method-specific restrictions before results are displayed.
Required Inputs
- Initial price (required).
- New price (required).
- Initial quantity demanded (required).
- New quantity demanded (required).
Results Reported
The result panel reports the final answer and the intermediate quantities needed to check the calculation:
- Signed price elasticity of demand
- Absolute elasticity
- Demand classification
- Midpoint price change (%)
- Midpoint quantity change (%)
- New minus original revenue (currency)
Price Elasticity of Demand Calculator Example
Select Example Data in the calculator to load this reproducible input set:
| Input | Example value |
|---|---|
| Initial price | 10 |
| New price | 12 |
| Initial quantity demanded | 1000 |
| New quantity demanded | 800 |
How to Use the Calculator
- Confirm that the calculator title and formula match the quantity you need.
- Enter every required value using the unit shown with its field.
- Select Example Data to inspect a valid input set, or enter your own values and select Calculate.
- Review all reported values and the displayed formula before using the answer.
- Use Copy Result or Download CSV when you need a reusable record.
Accuracy and Limitations
Both average price and average quantity must be nonzero and price must change. Other demand drivers should remain sufficiently stable for a meaningful comparison.
Keep units consistent, use measurements that represent the actual situation, retain full precision during the calculation, and round only the final answer. Professional decisions may require current official rules, field measurements, laboratory methods, or specialist review.
Frequently Asked Questions
What does the Price Elasticity of Demand Calculator calculate?
Calculate arc price elasticity of demand with the midpoint method and classify absolute elasticity as elastic, unit elastic, or inelastic.
Which formula does the Price Elasticity of Demand Calculator use?
Elasticity = [(Q2-Q1)/((Q1+Q2)/2)] / [(P2-P1)/((P1+P2)/2)]. Midpoint percentage changes remove dependence on which observation is called first, and their signed ratio preserves the usual negative demand relationship.
What should I check before using the Price Elasticity of Demand Calculator result?
Both average price and average quantity must be nonzero and price must change. Other demand drivers should remain sufficiently stable for a meaningful comparison.