Microeconomics
Consumer Surplus Calculator
Calculate consumer surplus for a linear demand curve.
Runs locally
Inputs and results stay in this browser. Currency symbols are illustrative; use any consistent currency.
Consumer surplus$10,000.00
Surplus per unit on average$20.00
Formula
Consumer surplus = ½ × (Maximum willingness to pay − Market price) × Quantity
How to interpret the result
For a straight-line demand curve, consumer surplus is the triangular area below demand and above the market price.
Assumptions and limitations
This calculator is an educational estimate, not financial, investment, tax or policy advice. Use consistent units and verify material decisions against primary data and professional guidance.
Last reviewed 2026-07-14. Calculations tested 2026-07-14.