Break-Even Calculator
Find out how many units you need to sell to cover your costs. Enter fixed costs, price per unit, and variable cost per unit — all in your browser, instant results.
About the Break-Even Calculator
This break-even calculator runs entirely in your browser. It tells you the number of units you must sell to cover all your costs — the point where total revenue equals total costs, meaning zero profit and zero loss. Nothing is uploaded to a server; all calculations happen instantly with JavaScript on your device.
How the calculation works
The calculator uses the standard break-even formula:
Break-Even Point (units) = Fixed Costs / (Price per Unit − Variable Cost per Unit)
Where Fixed Costs are expenses that don't change with output (rent, salaries, insurance), Price per Unit is how much you sell each unit for, and Variable Cost per Unit is the cost to produce one additional unit (materials, direct labor). The denominator (Price − Variable Cost) is called the Contribution Margin — the amount each unit contributes toward covering fixed costs.
Break-even revenue is then calculated as:
Break-Even Revenue = Fixed Costs / Contribution Margin Ratio
where Contribution Margin Ratio = Contribution Margin / Price per Unit.
Frequently asked questions
Does this tool upload my data? No. All calculations happen locally in your browser. Your inputs never leave your device.
What if my price is lower than my variable cost? The contribution margin would be negative, meaning you lose money on every unit sold. In that case, you can never break even — the calculator will warn you.
Does this include taxes or depreciation? No. The result is a pre-tax break-even point. Include any relevant taxes or depreciation in your fixed or variable costs as needed.
Can I use any currency? Yes. The numbers are unit-agnostic — enter values in any currency and the result will be in the same currency.