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Break-Even Analysis Calculator — Find Your Profit Threshold
Enter your fixed costs, variable cost per unit, and selling price. Get break-even units, break-even revenue, contribution margin, and margin of safety — instantly, with no signup. Pairs with the free cash flow calculator and profit margin calculator for a complete cost structure picture.
Rent, salaries, insurance — costs that don't change with output
Materials, commissions, packaging — costs that rise with each unit sold
Revenue received per unit before any discounts
Your sales target — used to calculate margin of safety
How Break-Even Analysis Works
Separate fixed and variable costs
Fixed costs (rent, salaries, insurance) stay constant regardless of how many units you sell. Variable costs (materials, packaging, commissions) rise directly with output. Getting this split right is the foundation of any break-even analysis.
Calculate contribution margin
Contribution margin = Selling Price − Variable Cost per Unit. This is what each unit sold contributes toward covering fixed costs. Once cumulative contribution margin equals total fixed costs, you reach break-even.
Find break-even units and revenue
Break-Even Units = Fixed Costs ÷ Contribution Margin per Unit. Break-Even Revenue = Break-Even Units × Selling Price. Every unit sold above this quantity generates pure contribution margin — pure profit net of variable costs.
Measure your margin of safety
Enter your sales target and the calculator shows margin of safety — how far revenue can fall before you start losing money. A 30%+ margin of safety gives meaningful protection against demand shortfalls or pricing pressure.
Why Break-Even Analysis Matters
Break-even analysis is the most direct test of whether a business model is viable at a given price and cost structure. Before committing capital to a product, expansion, or pricing change, knowing exactly how many units you must sell to cover all costs forces discipline on every assumption. It is not a forecast — it is a floor. Any revenue plan that does not comfortably clear the break-even threshold is a plan that is betting on perfect execution with no buffer.
The contribution margin ratio is the more powerful number for ongoing decisions. A 60% contribution margin ratio means 60 cents of every revenue dollar flows toward fixed costs and profit. Businesses with high contribution margins (software, digital products) can afford high fixed cost structures because each incremental sale is highly profitable. Low-margin businesses (grocery, manufacturing) must focus on volume and fixed cost efficiency. Use the profit margin calculator to see how break-even dynamics feed into gross, operating, and net margin.
Margin of safety adds the time dimension. A business with a 5% margin of safety is one bad quarter away from losses. A business with a 40% margin of safety has real resilience — revenue can fall 40% before losses begin. Use the margin of safety as the primary metric for evaluating new product launches, where actual demand is uncertain: if your most pessimistic demand scenario still clears break-even, the downside is bounded.
Frequently Asked Questions
What is the break-even formula?
Break-Even Units = Fixed Costs ÷ (Selling Price − Variable Cost per Unit). The denominator is the contribution margin per unit. Break-Even Revenue = Break-Even Units × Selling Price. Alternatively, Break-Even Revenue = Fixed Costs ÷ Contribution Margin Ratio.
What are examples of fixed costs?
Fixed costs include rent or lease payments, base salaries and wages, insurance premiums, depreciation on equipment, loan interest payments, and annual software subscriptions. These costs remain the same whether you sell 100 or 10,000 units.
What are examples of variable costs?
Variable costs include raw materials, direct labor tied to output, packaging, shipping and handling, sales commissions, and payment processing fees. Each additional unit you produce or sell adds to the total variable cost.
How does a price increase affect break-even?
A price increase raises the contribution margin per unit, which lowers the break-even quantity. For example, raising price by 10% while holding variable costs constant directly expands the contribution margin — the break-even unit count falls proportionally. This is why pricing power is the most powerful lever in any business model.
Can break-even analysis be used for a new product?
Yes — it is most valuable for new products. Before launch, break-even analysis tells you the minimum sales volume your product must achieve to justify the fixed cost investment. Compare your break-even point against your realistic demand estimate and your most pessimistic demand scenario. If even the pessimistic scenario clears break-even, the downside is genuinely bounded.
What is a good margin of safety?
A margin of safety above 30% gives solid protection against demand variability. Below 15% is a warning sign — one bad quarter can tip the business into losses. For new products or businesses in competitive markets, aim for a margin of safety of 40%+ to give management real room to react to underperformance before losses accumulate.