Break-Even Point Calculator
Find how many units you must sell to cover your fixed and variable costs, plus the revenue and contribution margin at your break-even point.
Updated September 2026
This is an estimate for general information only and is not financial, tax or investment advice. Figures may differ from a lender or advisor.
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This break-even calculator tells you how many units you need to sell before a product or business starts making a profit. It compares your fixed costs — rent, salaries, equipment and anything you pay regardless of volume — against the contribution each sale makes after its variable costs are covered.
The contribution margin is the price of one unit minus the variable cost of producing it. Dividing fixed costs by the contribution margin gives the break-even quantity; multiplying that by the price gives the revenue you need. If the price does not exceed the variable cost per unit, there is no contribution and the business can never break even.
How to use it
- 1Enter your total fixed costs and choose your currency.
- 2Enter the selling price of one unit.
- 3Enter the variable cost to produce one unit.
- 4Read the break-even units, revenue, contribution margin and CM ratio.
Frequently asked questions
What is the contribution margin?+
The contribution margin is the selling price of a unit minus its variable cost. It is the amount each sale contributes toward covering fixed costs, and once fixed costs are covered, toward profit.
What is the CM ratio?+
The contribution margin ratio is the contribution margin as a percentage of the selling price. A higher ratio means more of every dollar of sales is available to cover fixed costs and generate profit.
Why must the price exceed the variable cost?+
If each unit costs more to make than it sells for, every sale loses money and no amount of volume will cover the fixed costs. Break-even only exists when the contribution margin is positive.
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