Break-Even Units CalculatorFree online financial calculator — instant results, no sign-up
Calculate the whole-unit sales volume needed to cover fixed costs.
Estimates only, based on the inputs and assumptions shown. This is not financial, investment, tax, or legal advice. Prices, rates and local rules may change; crypto scenarios do not predict returns. Confirm important decisions with a qualified professional.
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About the Break-Even Units Calculator
The Break-Even Units Calculator finds the minimum whole-unit sales volume needed to cover fixed costs using your selling price and variable cost per unit. With fixed costs of $12,000, a selling price of $50, and a variable cost of $30, it calculates a $20.00 contribution per unit and a break-even volume of 600 whole units.
- Fixed costs ($)
- Total costs that do not change with sales volume over the period being analyzed, entered in dollars; the default is $12,000.
- Selling price per unit ($)
- Revenue received for each unit sold, entered in dollars per unit; the default is $50.
- Variable cost per unit ($)
- Cost incurred for each unit sold, entered in dollars per unit; the default is $30.
Formula and method
C = P − V; U = ⌈F / C⌉, for C > 0. With the default inputs: C = $50 − $30 = $20.00 per unit; U = ⌈$12,000 / $20.00⌉ = 600 whole units.
- FFixed costs in dollars for the period being analyzed.
- PSelling price in dollars per unit.
- VVariable cost in dollars per unit.
- CContribution per unit in dollars, available to cover fixed costs and then profit.
- UMinimum whole number of units that must be sold to cover total costs.
- ⌈ ⌉Ceiling operation: rounds a fractional result up to the next whole number and leaves an integer unchanged.
Subtract variable cost per unit from selling price per unit to find the contribution per unit. If this contribution is positive, divide fixed costs by it and round upward to a whole unit. Using the defaults, $50 minus $30 gives $20.00, and $12,000 divided by $20.00 gives exactly 600, so no upward adjustment is needed.
Worked example
These are the calculator's starting values and the results it actually produces for them.
Inputs
- Fixed costs12000 $
- Selling price per unit50 $
- Variable cost per unit30 $
Results
- Contribution per unit$20.00
- Break-even whole units600
How to use the Break-Even Units Calculator
- 1Choose the period you want to analyze and enter its fixed costs, using $12,000 for the default example.
- 2Enter the selling price per unit, using $50 for the default example.
- 3Enter the variable cost per unit, using $30 for the default example.
- 4Calculate and check the contribution per unit: the default inputs produce $20.00, which is positive.
- 5Read the break-even whole-unit result: the default inputs require 600 units sold during the chosen period.
Reading your result
Contribution per unit shows how much each sale leaves after its variable cost to cover fixed costs; the default output is $20.00. Break-even whole units shows the smallest whole-unit sales volume at which revenue covers the modeled costs; the default output is 600. At 600 units, revenue is $30,000 and total costs are $12,000 plus $18,000, so modeled profit is zero. When rounding upward is necessary, the whole-unit result may produce a small profit rather than exactly zero.
Limitations
This model assumes a constant selling price, constant variable cost per unit, and fixed costs that remain unchanged across the relevant sales range. Fixed costs must be nonnegative and must refer to the same period as the sales target. The calculation treats units as sold, not merely produced, and does not account for demand limits, capacity constraints, changing product mix, or cash-flow timing. Costs omitted from the inputs are not covered by the result. For positive fixed costs, a selling price at or below variable cost cannot produce a finite break-even volume.
Common questions
Why does the calculator round break-even units upward?+
A fractional unit cannot meet a whole-unit sales target. Rounding down would leave some costs uncovered, so the calculator uses the next whole unit. The default calculation equals exactly 600 units and needs no adjustment.
Is the $20.00 contribution per unit the same as profit per unit?+
No. With the default inputs, each sale contributes $20.00 toward the $12,000 of fixed costs first. Those fixed costs are fully covered at 600 units; additional sales then contribute $20.00 each to modeled profit, assuming costs and price stay unchanged.
What if selling price is equal to or below variable cost per unit?+
With positive fixed costs, there is no finite break-even sales volume. Equal price and variable cost leave nothing to cover fixed costs, while a lower price means each sale increases the loss. A zero or negative contribution should not be interpreted as a valid whole-unit break-even result.
Does the 600-unit result represent a monthly or annual target?+
It follows the period used for fixed costs. If the default $12,000 represents monthly fixed costs, the target is 600 units per month; if it represents annual fixed costs, the target is 600 units per year.
Does the calculator save my information?+
Calculations run in your browser. While signed in, inputs and results are automatically recorded in account history; saving a result creates a separate saved record.
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Results are estimates for informational purposes and are not financial, medical or legal advice.