Break-even point calculator — the volume that turns a profit
Before launching a product or setting a price, you need to know how many units you must sell just to cover your costs. This calculator finds that break-even point from three numbers — fixed costs, price per unit and variable cost per unit — and also shows how many units it takes to reach a profit target.
How it works
The engine is the contribution margin: price − variable cost, the money each
sale leaves after its own variable cost. Break-even is
fixed costs ÷ contribution margin. For a profit target, add the target to fixed
costs first: (fixed costs + target profit) ÷ contribution margin.
Worked example
Fixed costs of 5,000, a price of 25 and a variable cost of 10 per unit:
- Contribution margin:
25 − 10 = 15per unit (60% of the price) - Break-even:
5,000 ÷ 15 = 334 units(rounded up) - Break-even revenue:
334 × 25 = 8,350 - To make 3,000 profit:
(5,000 + 3,000) ÷ 15 = 534 units
Practical tips
Push the contribution margin, not just the price. Cutting the variable cost by 1 raises the contribution margin the same as adding 1 to the price — either lowers the break-even volume.
Separate fixed from variable carefully. Rent and salaries are fixed; materials, payment fees and shipping usually scale with each unit. Misclassifying them distorts the break-even.
Use it to sanity-check a price. If the break-even volume is more than you could realistically sell, the price is too low or the fixed costs too high — this tool makes that visible before you commit.
All calculations run entirely in your browser — nothing is uploaded or stored.