Break-Even Point Calculator

Break-even analysis splits your costs into two buckets and asks a single question: how many sales does it take before the money coming in covers both? Fixed costs (rent, salaries, insurance, software) stay the same whether you sell 10 units or 1,000. Variable costs (materials, packaging, payment fees) attach to each unit sold.

Contribution margin = Price − Variable cost per unit
Break-even units = Fixed costs ÷ Contribution margin
Break-even revenue = Break-even units × Price
Units for profit target = (Fixed costs + Target) ÷ Contribution margin

The mechanism runs on contribution margin. Sell a $50 product with $30 of variable costs, and each sale contributes $20 toward the fixed-cost pile. With $10,000 of monthly fixed costs, sale number 500 is the one that clears the pile, and everything after that is profit at $20 per unit. This is also why the calculator refuses to answer when your variable cost meets or exceeds your price: with nothing left over per sale, no volume ever digs you out.

The sliders exist because the useful part of break-even analysis is rarely the first number; it is watching how the number responds. Raising a $50 price to $55 drops the example break-even from 500 to 400 units, while cutting fixed costs by the same 10% only brings it to 450. Price changes act on the contribution margin, so they usually move break-even harder than equal-sized cost cuts. Dragging the sliders against the chart makes that lever ranking visible for your own numbers instead of a textbook's. To understand what each sale earns you once you are past break-even, our profit margin calculator works the per-unit side of the same math.

Two honest limits. First, the model assumes your price and variable cost hold steady across volumes, and real businesses hit discounts, bulk rates, and capacity steps. Treat the result as a planning anchor, not a forecast. Second, fixed costs are only fixed within a range: sell enough and you will need a bigger space or another hire, which resets the analysis at a new fixed-cost level. If you are setting the price input and unsure where it should sit, the markup calculator helps you build it from your cost side first.