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Price Elasticity of Supply Calculator

Find the price elasticity of supply by the midpoint method and whether supply is elastic.

Change the values and press Calculate to work out your own figures.

Enter the two prices and quantities supplied.

About starting priceBefore the change.
About starting quantityDemanded or supplied.
About new priceAfter the change.
About new quantityAfter the price change.
About percent changeThe midpoint method gives the same answer in both directions.
About currencyChanges how amounts are shown, not the math; your choice is remembered on this device.
Result
Price elasticity of supply
1.8
Elasticity
Elastic
Change in quantity
40%
Change in price
22.22%

The elasticity is 1.8: elastic.

Show the working
  1. %Δ = (new − old) ÷ ((new + old) ÷ 2)
  2. elasticity = %Δ quantity ÷ %Δ price

How to use it

Enter the two prices and quantities supplied.

Enter amounts without commas or with them; rates are percentages (5 for 5%). Negative amounts are allowed where a sign means money paid out.

Key facts

elasticity = %Δ quantity supplied ÷ %Δ price

Questions

What is the elasticity of supply if a price rise from $20 to $25 raises supply from 100 to 150?

1.8.

Formulas

elasticity = %Δ quantity supplied ÷ %Δ price

Sources

Limitations

  • Results are estimates for planning, not offers or financial advice; lenders and banks may round, count days or time payments differently.
  • Rates are nominal annual rates compounded as you choose; payments at a different frequency use the equivalent periodic rate.

Formula version 0.1.0Reviewed