What this calculator does
Calculate unit sales and revenue required to cover fixed costs and reach a target operating profit.
How it works
The calculator evaluates units for target = (fixed costs + target profit) ÷ (price − variable cost). Inputs are checked before calculation, and invalid values such as zero denominators or out-of-range selections produce a clear error instead of a misleading result.
Input query strings and outputs
Use an input name in this page’s URL as ?name=value, and join additional inputs with &. Portable shared links may instead use the compact ?ac= state parameter.
Input query strings
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?sellingPricePerUnit=Selling price per unitMoney · Required · Default: 50
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?variableCostPerUnit=Variable cost per unitMoney · Required · Default: 30
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?fixedCosts=Fixed costsMoney · Required · Default: 100,000
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?targetProfit=Target profitMoney · Required · Default: 25,000
Outputs
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unitsRequiredUnits requiredWhole number · Primary output
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exactUnitsExact units before roundingNumber
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requiredRevenueRequired sales revenueCurrency
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contributionMarginPerUnitContribution margin per unitCurrency
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contributionMarginRatioContribution margin ratioPercentage
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breakEvenUnitsBreak-even unitsWhole number
Inputs and results
The inputs are Selling price per unit, Variable cost per unit, Fixed costs, Target profit. Results include Units required, Exact units before rounding, Required sales revenue, Contribution margin per unit, Contribution margin ratio, Break-even units.