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Consumer Surplus Calculator
Compute consumer surplus from a linear demand curve and the market price.
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⚡ Instant Results
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Consumer surplus
Compare Your Options And Get Clear Answers
Compute consumer surplus from a linear demand curve and the market price.
Consumer Surplus Estimator
Enter your numbers below for an instant estimate.
0
💡 Tip: CS = 0.5 x (max price – price) x quantity.
How It Works
Key concepts behind this calculator
1
Enter Values
Fill in each field with your own numbers.
2
Calculate
Results update as you change the inputs.
3
Review
Read the breakdown and the explanation.
4
Adjust
Change values to compare scenarios.
Quick Reference Guide
Consumer Quick Guide
Typical values for reference.
| Max price | Price | Quantity | Surplus |
|---|---|---|---|
| 100 | 40 | 60 | £1,800.00 |
| 50 | 30 | 20 | £200.00 |
| 200 | 80 | 120 | £7,200.00 |
| 20 | 10 | 50 | £250.00 |
| Rule of Thumb | Check inputs | Use as a guide | Round sensibly |
Common Questions
Consumer Surplus Calculator FAQ
Answers to common questions about this calculator.
The gap between what buyers would pay and what they actually pay.
As the triangle under demand and above the price line.
Consumer surplus rises.
No, this assumes a straight line.