What a break-even calculator does
A break-even calculator estimates how many units or how much sales revenue a business needs before it stops losing money. It helps turn simple pricing and cost assumptions into practical planning targets.
Business calculator
Break-Even Calculator
Estimate break-even units, break-even sales revenue, contribution margin, margin of safety, and target-profit requirements from fixed costs, selling price, and variable cost in one calm business planning layout.
Editor
Break-even assumptions
Enter your fixed costs, selling price, and variable cost to estimate the break-even point, contribution margin, and the sales level needed to support a target profit.
Inputs
The core cost and pricing assumptions stay visible up front, and the planning fields stay in the same card so the workflow feels simple for beginners.
Cost and pricing inputs
Start with the fixed costs that do not change with unit volume, then add the selling price and variable cost for one unit.
Contribution margin per unit equals selling price minus variable cost. That per-unit contribution covers fixed costs first, and only the amount above break-even flows toward profit.
Planning inputs
Use expected unit volume and a target profit to compare where you stand now and how much extra sales level may be needed.
This calculator assumes constant pricing and unit costs across the sales range shown. It is designed for practical break-even estimates rather than full forecasting or accounting models.
Results
Estimated break-even results
Review the break-even point, contribution margin, planning targets, and a simple revenue-versus-cost view that shows where the business crosses into profit.
Break-even units
500 units
At $20.00 of contribution margin per unit, it takes about 500 units for cumulative contribution margin to cover $10,000.00 in fixed costs.
Break-even sales revenue
$25,000.00
Estimated sales revenue needed for contribution margin to fully cover fixed costs.
Contribution margin per unit
$20.00
Selling price per unit minus variable cost per unit.
Contribution margin ratio
40%
Contribution margin as a share of each sales dollar.
Profit or loss at expected volume
+$2,000.00
At 600 units, cumulative contribution margin is $12,000.00 before fixed costs.
Margin of safety
+100 units
+$5,000.00 in revenue, 16.67% of expected sales.
Units needed for target profit
750 units
Estimated revenue needed: $37,500.00.
Revenue needed for target profit
$37,500.00
Estimated sales revenue needed to cover fixed costs and the target profit goal.
Revenue vs total cost
The point where the revenue line crosses the total cost line marks the break-even point. To the right of that crossover, contribution margin has fully covered fixed costs and the scenario moves into profit.
Total revenue
Total cost
$50,000$25,000$0
0 units500 units1,000 units
Break-even breakdown
Review the inputs, contribution margin, expected scenario, and target-profit requirements that feed the dashboard.
| Metric | Value |
|---|---|
| Fixed costs | $10,000.00 |
| Selling price per unit | $50.00 |
| Variable cost per unit | $30.00 |
| Contribution margin per unit | +$20.00 |
| Contribution margin ratio | 40% |
| Break-even units | 500 |
| Break-even revenue | $25,000.00 |
| Expected units sold | 600 |
| Expected revenue | $30,000.00 |
| Expected variable cost | $18,000.00 |
| Expected contribution margin | $12,000.00 |
| Expected profit or loss | +$2,000.00 |
| Margin of safety (units) | +100 |
| Margin of safety (revenue) | +$5,000.00 |
| Margin of safety (%) | +16.67% |
| Target profit | $5,000.00 |
| Required units for target profit | 750 |
| Required revenue for target profit | $37,500.00 |
How it works
How this break-even calculator helps with pricing and planning
This calculator shows how fixed costs, selling price, variable cost, expected volume, and target profit work together in a standard break-even analysis. Results are estimates based on constant unit economics.
How break-even units are calculated
Break-even units equal fixed costs divided by contribution margin per unit. Contribution margin per unit is selling price minus variable cost, which shows how much each sale contributes toward fixed costs before any profit is left over.
How break-even revenue is calculated
Break-even revenue equals fixed costs divided by the contribution margin ratio. The contribution margin ratio shows how much of each sales dollar is available to cover fixed costs after variable costs are paid.
Fixed costs, variable costs, and contribution margin
Fixed costs stay the same across the modeled range, while variable costs rise with each unit sold. Contribution margin is the amount left from each sale after variable cost, and that is what gradually covers fixed costs and then turns into profit.
How target profit changes the sales level
To reach a target profit, the business must cover both fixed costs and the profit goal. The calculator adds target profit to fixed costs, then estimates the units and revenue needed using the same contribution margin assumptions.
What margin of safety means
Margin of safety compares expected sales against the break-even level. A positive margin of safety means the plan is above break-even. A negative result means the current sales assumption is still below the level needed to fully cover fixed costs.