Break-Even Calculator
Last updated: July 2026
Calculate break-even units, break-even revenue, and contribution margin for a product or service.
Break-even quantity
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- Break-even revenue: —
- Contribution margin per unit: —
- Contribution margin ratio: —
On this page
Quick summary: Calculate break-even units, break-even revenue, and contribution margin for a product or service. Enter the requested values, calculate, review the result, and compare more than one realistic scenario before making a decision.
Read the complete guide
What this calculator does
The Break-Even Calculator estimates the sales volume or revenue required for total revenue to equal total costs.
How to use the calculator step by step
Enter fixed costs, selling price per unit, and variable cost per unit. Keep all values for the same business scenario and time period.
How the calculation works
Break-even units equal fixed costs divided by contribution margin per unit, where contribution margin equals selling price minus variable cost.
Worked example and scenario testing
With fixed costs of 10,000, a selling price of 50, and variable cost of 30, contribution margin is 20 and break-even volume is 500 units.
How to interpret your result
At break-even, operating profit is approximately zero under the included assumptions. Sales above that level contribute toward profit, while sales below it leave fixed costs uncovered.
Accuracy, assumptions, and limitations
The model assumes selling price and variable cost remain constant and that all units produced can be sold. Real businesses may have multiple products and changing costs.
Common mistakes to avoid
Do not use total cost per unit including allocated fixed cost as the variable-cost input. Also check that contribution margin is positive.
Privacy and browser-based calculations
Only business cost and pricing values are needed. No customer or account data should be entered.