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Consumer Surplus Triangle — result sheet
Consumer surplus as the triangle under linear demand.
Inputs used
Results
Visual chart
Breakdown
Calculation steps
Returned data table
Formula and methodology
Formula: CS = 0.5 x (pmax - peq) x qeq.
With straight-line demand, surplus is the triangle between the price intercept and the market price, over the traded quantity. Half the price gap times quantity is the gain to buyers.
This result follows the calculator's declared inputs, precision, validation boundaries, and model limits.
Input contract
- Max willingness to pay — Demand-curve price intercept; must exceed the market price.; minimum 0; maximum 1000000000000
- Market price — Equilibrium price actually paid.; minimum 0; maximum 1000000000000
- Quantity traded — Equilibrium quantity; must be greater than zero.; minimum 0; maximum 1000000000000
Worked example
| Input | Value |
|---|---|
| Max willingness to pay | 20 |
| Market price | 12 |
| Quantity traded | 100 |
Consumer surplus 400.00.
Assumptions and limits
- Linear demand from pmax to the traded point; single market price peq.
- Static partial-equilibrium snapshot with no externalities or price discrimination.
Calculator note
Source and methodology
Use the official WorldCalculate methodology policy for the source, formula, precision, and boundary standards behind this calculator.
Planning estimate, not financial, medical, legal, or professional advice. © WorldCalculate — reuse with attribution. Built and curated by Hassan ALRowaie.
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