Break-even Calculator

Break-even analysis answers one simple question: how much must you sell before profit starts? The calculation depends on three variables: fixed costs, variable costs per unit, and selling price per unit. Once contribution per unit (price minus variable cost) is known, break-even units are computed as fixed costs divided by contribution.

This framework is foundational in pricing strategy, startup planning, e-commerce operations, SaaS packaging, manufacturing, and menu engineering. It translates abstract cost structure into concrete sales targets.

Related terms: fixed cost (rent, salaries, subscriptions), variable cost (materials, shipping, transaction fees), contribution margin (money left after variable costs), and unit economics (profitability at per-unit level).

The break-even unit count is a minimum viability threshold. If your realistic monthly demand is below that number, your current model likely needs improvement through pricing, cost optimization, or positioning changes.

Contribution margin ratio helps compare business models. A higher ratio gives more room for marketing spend, discounts, and operational shocks. If the ratio is thin, even small cost increases can erase profit.

The target-profit extension turns planning into action: choose a desired profit and convert it into a required unit goal. This is useful for quarterly planning, campaign ROI targets, and sales team quota setting.

Real businesses often have multiple products, tiered prices, discounts, returns, seasonality, and mixed channels. This calculator assumes one representative product and stable average costs. Treat the result as a planning anchor, not an exact forecast.

For strategic use, run multiple scenarios: base case, optimistic case, and stress case. Scenario analysis gives decision resilience and highlights which variables (price, cost, conversion rate) matter most.