General calculator
Point price elasticity calculator
Elasticity ≈ (%ΔQ) ÷ (%ΔP) with careful sign conventions for demand curves.
Inputs
Enter valid numbers. Calculations run entirely in your browser.
Results
Point elasticity estimate
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Example
Price 10→9, quantity 1000→1150 → about −1.5 (downward sloping demand).
Explanation
Uses discrete point ratios; arc elasticity differs when moves are large.
FAQ
Sign?
Ordinary goods show negative elasticity when price falls and quantity rises.