🛒 Consumer Surplus Calculator
Calculate consumer surplus, the economic benefit consumers gain when they pay less than the maximum price they’d be willing to pay.
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What is consumer surplus?
Consumer surplus is the economic benefit consumers receive when they pay less for a good than the maximum price they would have been willing to pay. Graphically, it’s the triangular area between the demand curve and the market price line.
The formula
Assuming a simplified linear demand curve, Consumer Surplus = 0.5 × (Maximum Price – Market Price) × Quantity Sold. Enter the highest price consumers would pay, the actual market price, and the quantity sold to estimate total consumer surplus.
This calculator is a simplified educational model; real demand curves and consumer valuations are rarely perfectly linear.
Last reviewed August 2026