Break-Even Calculator
Estimate units, revenue, contribution margin, and margin of safety for a simple fixed-cost break-even scenario.
How it works
Break-even analysis compares fixed costs with the money left from each sale after variable costs. Enter fixed costs for the planning period, the average selling price, and the variable cost per unit.
The calculator subtracts variable cost from selling price to find contribution margin. It divides fixed costs by that contribution margin to estimate the zero-profit coverage point. If you can sell only whole units, round the unit estimate up before using it in a plan.
Break-even units = fixed costs ÷ (price per unit − variable cost per unit)
Optional target profit adds the desired profit to fixed costs before dividing by contribution margin. Optional projected units estimate profit, revenue, and margin of safety for a forecast.
Assumptions and limitations
Use this for simple product, service, event, campaign, or project planning where average price and average variable cost are reasonable approximations. It does not model tiered pricing, discounts, capacity limits, taxes, financing costs, inventory timing, churn, seasonality, or accounting rules.
Results are estimates for planning and comparison only. They are not financial, tax, legal, accounting, or business advice.
All calculations happen locally in your browser. Your costs, prices, and forecasts are not sent to a server.
