When to use this calculator
Estimate how many whole units cover fixed costs and variable unit costs. Selling price must exceed variable unit cost. Assumes constant prices and unit costs.
Explore the pricing & break-even calculators for other questions in this topic. For a related calculation, use the Contribution Margin Calculator: Find the contribution per unit after variable costs.
PUTTING IT INTO PRACTICE
Break Even Units: a worked example
The values below are an illustrative example, not a recommendation. Replace them with measurements or assumptions that match your question.
| Input | Example value |
|---|---|
| Fixed costs | 10,000 |
| Selling price per unit | 50 |
| Variable cost per unit | 30 |
| Result | 500 units |
- Check the input labels and enter the example values above.
- Apply the relationship: Units = ceiling(fixed costs ÷ (price − variable cost)).
- The result is 500 units, rounded for display.
How to interpret your result
Selling price must exceed variable unit cost. Assumes constant prices and unit costs.
Margin uses sales revenue as its denominator, while markup uses cost. Contribution deducts variable costs before fixed costs. Break-even calculations assume the same prices, variable costs and product mix remain in place.
Frequently asked questions
Why are margin and markup percentages different?
They use different bases. The same monetary profit is divided by selling price for margin and by cost for markup.
How do I use the break even units calculator?
Enter fixed costs, selling price per unit, variable cost per unit. The result updates automatically. Use the units shown beside each input; the example values illustrate the method.
Which formula does this calculator use?
Units = ceiling(fixed costs ÷ (price − variable cost)).
What should I check before using the result?
Selling price must exceed variable unit cost. Assumes constant prices and unit costs.
How are results rounded?
Scalar numbers display up to six decimal places, with scientific notation for very large or small values. Text, fraction, date and schedule outputs use the format described on the tool. Intermediate calculations use JavaScript floating-point arithmetic. Keep sensible precision for your measurements.
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