500 is the example result. A positive unit contribution is required to cover fixed cost. Fractional units describe the mathematical threshold; whole-item sales need rounding upward.
Find the whole-unit sales volume that covers fixed costs. Selling price must exceed variable cost for the model to produce a finite break-even quantity.
Comparing financial amounts on a defined basis
A positive unit contribution is required to cover fixed cost. Fractional units describe the mathematical threshold; whole-item sales need rounding upward. A financial model is useful when its cash amounts, rate convention and time horizon describe the same case. Interest, return and purchasing power are different outputs. A projection should remain separate from an observed or audited balance.
What the model includes
Result = (([Fixed costs]) ÷ ([Selling price per unit] − [Variable cost per unit])) Check whether a rate is annual, monthly, simple or compounded. Enter fees only where the form represents them and identify contractual charges that remain outside the estimate. A monthly payment alone does not establish affordability or total ownership cost. Use the result to prepare the next question about terms or assumptions. Tax treatment, lender conditions and valuation evidence require the relevant source documents; they cannot be recovered from a few numeric inputs.
Example with the supplied inputs
Fixed costs: 20000; Selling price per unit: 100; Variable cost per unit: 60. Result: 500. The values are illustrative.
Compare one changed input
Fixed costs changes from 20000 to 22000. The result becomes 550. All other inputs remain fixed.
Calculation rule
Result = (([Fixed costs]) ÷ ([Selling price per unit] − [Variable cost per unit]))
Inputs and output
| Input | Example value | Entry convention |
|---|---|---|
| Fixed costs | 20000 | Use fixed costs on the currency and period basis shown by the formula. Keep gross amounts, net amounts and unit amounts distinct; the page does not fetch a price or exchange rate. |
| Selling price per unit | 100 | Use selling price per unit on the currency and period basis shown by the formula. Keep gross amounts, net amounts and unit amounts distinct; the page does not fetch a price or exchange rate. |
| Variable cost per unit | 60 | Use variable cost per unit on the currency and period basis shown by the formula. Keep gross amounts, net amounts and unit amounts distinct; the page does not fetch a price or exchange rate. |
Output: 500 is the example result. A positive unit contribution is required to cover fixed cost. Fractional units describe the mathematical threshold; whole-item sales need rounding upward. Use the formula to distinguish a cash amount, count, percentage or ratio.
How to use the page
Collect the inputs
Gather Fixed costs, Selling price per unit, Variable cost per unit. Use one period and the units shown in the form.
Run the calculation
Enter the values and select the action. The calculation rule above explains how the inputs produce the result.
Compare a scenario
Change Fixed costs on its own, keeping the other inputs fixed. Read both results before changing another assumption.
Worked example
With the example inputs listed above, the result is 500.
Change Fixed costs from 20000 to 22000 while keeping every other value fixed. The result becomes 550. This comparison isolates that input; it does not forecast how other variables will respond.
Check the stated formula, units and limits before using the result in a decision.
Keep the displayed formula, input units and model scope with the result. Corrections or questions can be sent through the request section on this page.