Business
Break-even Calculator
Estimate break-even volume and revenue from fixed cost, unit price, and variable cost. Add a target profit, compare volume scenarios, visualize revenue against total cost, and export a professional PDF planning report.
Break-even units0
Break-even revenue$0.00
Contribution margin per unit$0.00
Units for target profit0
Profit at expected sales$0.00
Margin of safety0%
Volume sensitivity
Profit across sales volumes
Operating profit by units soldRevenue less variable and fixed costs
| Units | Revenue | Variable cost | Total cost | Profit / loss | Status |
|---|
Decision view
Fixed-cost recovery runway
Fixed-cost recovery$0
Expected safety volume0 units
Target-profit extension0 units
How to use Break-even Calculator
- Enter fixed costs for one consistent planning period, plus the selling price and variable cost for one unit.
- Check that selling price exceeds variable cost; otherwise each additional sale increases the modeled loss.
- Compare break-even volume, target-profit volume, expected sales, and the margin of safety.
- Review capacity, sales mix, taxes, and stepped costs before using the result as an operating commitment.
Calculator guide
Understanding Break-even Calculator
Break-even analysis identifies the sales volume at which contribution margin has covered fixed costs. A target-profit extension shows how many additional units are needed beyond simple cost recovery.
Calculation method
How the calculation works
Break-even units = fixed costs / (selling price per unit - variable cost per unit). Subtract variable cost per unit from selling price, divide fixed costs by that contribution margin, and round required units upward. Add target profit to fixed costs before dividing for the target-profit volume.
Operating threshold
From unit contribution to break-even
Each unit first contributes selling price minus variable cost. Those contributions recover fixed cost before any modeled operating profit appears.
Model boundary
When the one-product model needs expansion
The calculation is most reliable when one product has a stable selling price and variable cost throughout the selected period.
Worked situations
Practical examples
- Find how many units must be sold before a product covers its fixed costs.
- Calculate the sales volume required for a target operating profit.
- Compare profit sensitivity at several production and sales volumes.
Better inputs
Useful tips
- Use costs from the same planning period.
- Separate truly variable costs from stepped or semi-variable costs.
- Test multiple prices and volumes before committing capacity.
Before relying on the result
Limitations and common mistakes
- The model assumes a constant selling price and unit variable cost.
- It does not model capacity limits, taxes, financing, or multiple-product sales mix.
- Rounding to whole units may place actual profit slightly above the target.
Reference
Key terms
- Contribution margin
- Revenue per unit remaining after unit variable cost.
- Fixed cost
- Modeled cost unchanged by output volume.
- Break-even
- The point where modeled revenue equals modeled total cost.
- Margin of safety
- Expected sales above break-even sales.
Important note
Calculated from the entered values using the displayed accounting method. Reconcile material decisions with source records and applicable accounting policy.
Frequently asked questions
Why is contribution margin important?
Each unit's contribution margin is the amount available to cover fixed cost and then profit.
Should break-even units be rounded?
Yes. When only whole units can be sold, round the required quantity upward.
What if variable cost exceeds price?
There is no positive contribution margin, so selling more units cannot produce break-even under those assumptions.
Can this model several products?
Not directly. A multi-product analysis requires a stable sales mix and weighted contribution margin.