The Hesapstan break-even point calculator is designed to calculate the sales volume at which a business neither profits nor loses money, from fixed costs, selling price per unit and variable cost per unit, more clearly. It is built for anyone launching a product or service who is asking "how many units, at minimum, do I need to sell": the inputs are fixed costs, selling price and variable cost per unit, and the outputs are contribution margin, contribution margin ratio, the exact and whole-unit break-even count, and the matching revenue figures. The tool's main limitation is that it assumes one product with one contribution margin; it does not compute tax, currency conversion, or a target-profit figure. Read the result as "below this volume, a loss; above it, a profit" — not as a guaranteed profit amount.
What this calculator computes
The break-even point is the sales volume at which total revenue equals total cost. At that volume a business neither profits nor loses money: the contribution margin earned from units sold has exactly covered the fixed costs.
- Contribution margin per unit (selling price minus variable cost).
- Contribution margin ratio, as a percentage.
- The exact theoretical break-even unit count, which may be fractional.
- The minimum whole number of units needed, rounded up.
- Break-even revenue at both the exact and the whole-unit result.
- No taxes, no currency conversion, no inventory assumption, no target-profit logic.
This calculator assumes a single selling price and a single variable cost. It does not perform a sales-mix analysis across multiple products with different contribution margins.
Fixed cost versus variable cost
Fixed costs are paid every period regardless of sales volume — rent, insurance, a salaried employee's wage. Whether you sell one unit or a thousand, total fixed cost stays the same.
Variable cost is incurred separately for every unit sold — raw materials, packaging, a per-unit commission. Total variable cost rises with volume. This tool expects you to split your own figures into these two categories correctly; a misclassified cost produces a misleading result.
Is contribution margin the same as profit?
No. Contribution margin is a unit's selling price minus only that unit's own variable cost — fixed costs have not been deducted yet. Profit is what remains after fixed costs are also subtracted from the total contribution margin earned.
Below the break-even point, accumulated contribution margin has not yet covered fixed costs (a loss); above it, the excess over fixed costs is profit. Contribution margin is the raw material profit is made from — not profit itself.
How the contribution margin and break-even units are calculated
Contribution margin per unit is the selling price minus the variable cost: CM = Selling Price − Variable Cost. The contribution margin ratio is that amount divided by the selling price.
The exact theoretical break-even unit count is fixed costs divided by the contribution margin per unit: Break-Even Units = Fixed Costs ÷ Contribution Margin. Break-even revenue is that unit count multiplied by the selling price.
Worked example
Fixed costs 10,000, selling price 50, variable cost 30. Contribution margin = 50 − 30 = 20; contribution margin ratio = 20 / 50 = 40%. Break-even units = 10,000 / 20 = 500 — a whole number here, so the exact and whole-unit figures coincide. Break-even revenue = 500 × 50 = 25,000.
Now take fixed costs 1,000, selling price 27, variable cost 12: contribution margin = 15, break-even units = 1,000 / 15 = 66.67. For an indivisible product, this means at least 67 units must be sold; at 66 units, part of the fixed costs is still uncovered.
Unit break-even versus revenue break-even
Unit break-even tells you how many UNITS must be sold; revenue break-even tells you the AMOUNT that volume corresponds to. They express the same fact in different units — one answers "how many", the other "how much revenue".
Revenue break-even is nothing more than unit break-even multiplied by the selling price — it is derived from the same calculation, not a separate formula.
How sensitive is the result to price or cost changes?
As the contribution margin shrinks (price falls, or variable cost rises), the number of units needed to cover the same fixed cost rises quickly; as the margin grows, fewer units are needed. This sensitivity is not linear — as the contribution margin approaches zero, the break-even unit count approaches infinity.
A small price cut or a small cost increase can therefore move the break-even point far more than it appears to. Running a few price/cost scenarios separately is the practical way to see this sensitivity.
Break-even is not the same as a target-profit calculation
Break-even finds the zero-profit/zero-loss point. A target-profit calculation answers "how many units to reach a specific profit figure", and adds that target profit to fixed costs in the formula.
This calculator only returns the zero-profit point. The unit count needed to reach a specific profit target is outside its scope.
Break-even is not the same as margin of safety
Margin of safety measures how far actual or expected sales sit above the break-even point — how much sales could fall before the business tips into a loss. This tool does not compute margin of safety; it returns the break-even point itself.
Why two break-even unit figures are shown
Fixed costs and the contribution margin do not always divide evenly — the calculation might produce 66.67 units. Most businesses cannot sell part of a unit, so selling only 66 units would leave part of the fixed costs uncovered, which is a loss at that volume.
For that reason, the whole-unit result is always rounded up (to 67 units) — never down and never to the nearest whole number, however small the fraction. Rounding down would mean fixed costs are still not fully covered at that volume.
Use in Turkey and internationally
This tool assumes no currency. You may enter figures consistently in TRY, USD, EUR or any other currency — what matters is that fixed costs, selling price and variable cost are all in the same currency. The formula itself is universal and not specific to any country.
The tool does not automatically add VAT, income tax, withholding, or any Turkey-specific accounting treatment. Whether your entered price and costs are VAT-inclusive or VAT-exclusive is a choice that depends on your own accounting practice, and it directly affects the break-even result.
Which inputs are rejected
- Fixed costs below zero are rejected; zero is valid, negative is not.
- A selling price of zero or below is rejected.
- A variable cost below zero is rejected; zero is valid.
- A selling price at or below the variable cost is rejected — the contribution margin would be zero or negative, and break-even is undefined.
- A non-numeric or non-finite value is rejected and clears any previous result.
Frequently Asked Questions
How do I split a cost into fixed versus variable?
A fixed cost is paid at the same amount every period regardless of sales volume (rent, insurance). A variable cost is incurred separately for each unit sold (raw materials, packaging). If unsure which category a cost belongs to, ask: "would this cost exist even with zero sales?"
Is contribution margin the same as profit?
No. Contribution margin is the selling price minus only the variable cost — fixed costs have not been subtracted yet. Profit is what remains after fixed costs are also deducted from total contribution margin.
What is the difference between the exact and whole-unit break-even figures?
The exact figure is the raw result of fixed costs divided by contribution margin, and may be fractional. The whole-unit figure is that value rounded up, showing the actual number of units a business selling indivisible units needs to reach.
Why round up instead of down?
Rounding down would mean fixed costs are not yet fully covered at that sales volume, which is a loss. Rounding up gives the first whole unit at which all fixed costs are recovered.
Does this calculate the units needed for a specific profit target?
No. This tool computes only the point of neither profit nor loss. A target-profit calculation adds the desired profit to fixed costs in the formula and is outside this tool's scope.
Is margin of safety the same as the break-even point?
No. Break-even is the zero-profit/zero-loss point. Margin of safety measures how far actual or expected sales sit above that point — how much sales could fall before a loss begins. This tool does not compute margin of safety.
What currency does this tool use?
None is assumed. As long as every amount you enter is in the same currency, the result is internally consistent; the tool performs no conversion and adds no VAT or tax.