Break-Even Point Calculator
Your break-even point is the sales level where revenue exactly covers costs — no profit, no loss. It equals fixed costs ÷ contribution margin (price minus variable cost per unit). This calculator gives the break-even in both units and revenue, and can add a target profit.
Use this break-even calculator to find the minimum you must sell before a product or business turns a profit. Enter your fixed costs, the variable cost of each unit and your selling price — and optionally a profit goal — to see the units and sales revenue you need, along with the contribution margin that drives it all.
Enter your costs and price, then press Calculate.
How the break-even calculator works
The idea behind break-even is simple: every sale contributes a little toward your fixed costs, and once enough sales have piled up to cover them all, the next sale is profit. That "little" is the contribution margin — the selling price minus the variable cost of one unit. Divide your fixed costs by it and you get the number of units at which you exactly break even. Divide fixed costs by the contribution margin ratio instead, and you get the same point expressed as sales revenue.
This calculator does both at once, and adds a target profit option: enter a profit goal and it treats that goal like extra fixed costs, showing the units and revenue you need to hit it. From here it is natural to move on to pricing with the profit margin and markup calculators, or to weigh an investment with the ROI calculator.
The break-even formulas
- Fixed — costs that do not change with volume
- Variable — cost per unit made or sold
- CM ratio — contribution margin ÷ price
Why the break-even point matters
Break-even is the reality check behind every business plan. It answers the most basic survival question — how much must I sell to not lose money — and it turns vague ambition into a concrete number you can test against your market. If the break-even volume looks impossible for your size or channel, the plan needs to change: raise the price, cut a fixed cost, or lower the variable cost per unit. Each of those levers moves the break-even point, and you can see exactly how much by changing one figure here at a time.
The limits of a simple break-even
A break-even analysis assumes your price and variable cost stay constant at every level of sales, which real markets rarely respect — bulk discounts, rising material costs and price sensitivity all bend the lines. It also ignores timing, since fixed costs are due whether or not sales arrive on schedule. Treat the result as a clear, useful floor rather than a precise forecast, and pair it with a cash-flow view before you commit to a launch.
Margin of safety: your break-even cushion
The break-even point tells you the floor; the margin of safety tells you how much room you have above it. It measures how far your actual or expected sales sit above break-even before you would start losing money, and it is one of the most useful risk numbers a business owner can track. The formula is simple: (expected sales − break-even sales) ÷ expected sales × 100. If you expect $80,000 in sales and break even at $50,000, your margin of safety is ($80,000 − $50,000) ÷ $80,000, or about 38% — meaning sales could fall by 38% before you slip into a loss. A thin margin of safety warns you that a small dip in demand could wipe out your profit, which is a signal to lower your break-even point, build a cash cushion, or think hard before adding fixed costs.
Estimate only — not financial advice. A break-even analysis simplifies real costs and demand. Confirm your figures before making business decisions.
How to use it & key terms
Enter your fixed costs, variable cost per unit and selling price, add an optional target profit, then press Calculate to see the break-even units and revenue.
| Term | What it means |
|---|---|
| Fixed costs | Costs that do not change with sales volume, like rent and salaries. |
| Variable cost | The cost of making or buying one unit. |
| Contribution margin | Price minus variable cost — what each sale contributes to fixed costs. |
| Break-even units | The number of units that make revenue equal total costs. |
| Break-even revenue | The sales dollars at the break-even point. |
| Target profit | A profit goal added on top of break-even. |
Sources & methodology
The calculator computes the contribution margin per unit as the selling price minus the variable cost per unit, and the contribution margin ratio as that figure divided by the price. Break-even units are the fixed costs divided by the contribution margin per unit, and break-even revenue is the fixed costs divided by the contribution margin ratio. When a target profit is entered, it is added to the fixed costs before dividing, giving the units and revenue required to earn that profit. Units are rounded up to whole units, since a partial unit does not clear the break-even threshold.
Sources: Standard cost-volume-profit (break-even) analysis as taught in managerial accounting.
Common mistakes that quietly distort a break-even
A break-even point is quick to compute and surprisingly easy to get subtly wrong, because most errors happen while you are gathering the inputs rather than in the arithmetic itself. The most frequent slip is misclassifying costs. Some expenses are neither purely fixed nor purely variable — sales commissions, utility bills that rise with output, or delivery that is part flat contract and part per-order. Forcing these semi-variable costs entirely into one bucket pushes the break-even point up or down without you noticing. Split them instead: put the steady portion with fixed costs and the per-unit portion with variable costs, since that split is the single biggest driver of an accurate result.
A second common mistake is leaving your own pay out of fixed costs. If you draw no salary, the break-even looks lower than the level of sales you actually need to live on, and owners who skip their own wage often find that reaching break-even still leaves nothing to cover the rent at home. Include a realistic wage for yourself and any unpaid help. In the same spirit, use the price you truly receive after discounts, coupons and platform fees rather than the list price, because the contribution margin depends on the money that lands, not the sticker.
Blending several products into one calculation is another trap. When items carry different prices and variable costs, a single averaged contribution margin can hide the fact that your best sellers are your thinnest earners. If your mix is uneven, run the numbers product by product, or at least group similar items, so the result reflects what you really sell rather than a blur of everything at once. That closer view also shows which lines are worth pushing and which are quietly dragging the average down.
Finally, match your time periods and respect your capacity. Fixed costs are usually quoted per year, so compare them against annual sales, not a single busy month. Then check that the break-even volume is physically possible — a figure that needs more units than your space, staff or opening hours can produce is a signal to change the plan, not a target to celebrate. It is worth recomputing whenever a major cost shifts, since a new rent, a supplier price rise or an extra hire can move the floor overnight. Watching for these input errors is what separates a break-even that guides real decisions from one that merely looks reassuring.
Frequently asked questions
What is the break-even point?
The break-even point is the level of sales at which total revenue exactly equals total costs, so the business makes neither a profit nor a loss. Below it you lose money; above it you start to profit. It can be measured in units — how many you must sell — or in revenue — how much you must take in. It is one of the first numbers to know before launching a product, because it tells you the minimum scale you need to survive.
How do you calculate the break-even point?
Divide fixed costs by the contribution margin per unit — the selling price minus the variable cost per unit. The result is the number of units you must sell to cover all costs. For revenue, divide fixed costs by the contribution margin ratio, which is the contribution margin divided by the price. For example, $30,000 of fixed costs with an $18 contribution margin per unit gives a break-even of about 1,667 units, or $50,000 in sales.
What is contribution margin?
Contribution margin is the money left from each sale after paying that unit's variable cost, and it is what goes toward covering fixed costs and then profit. Per unit it is the price minus the variable cost; as a ratio it is that figure divided by the price. A higher contribution margin means each sale does more work, so you break even on fewer units. It is the engine of every break-even and profit calculation.
What is the difference between break-even units and break-even revenue?
Break-even units is how many items you must sell; break-even revenue is the dollar sales those units represent. They describe the same point in two ways. Units are handy when you sell a single product at one price, while revenue is more useful for a business with many products or services, where counting individual units is impractical. This calculator shows both so you can use whichever fits your situation.
How does the selling price affect the break-even point?
Raising the price increases the contribution margin per unit, so you break even on fewer sales — but only if the higher price does not drive away too many customers. Lowering the price does the opposite, requiring more volume to cover the same fixed costs. Because price feeds directly into the contribution margin, small pricing changes can move the break-even point sharply, which is why it is worth testing a few prices here before you decide.
How do I include a target profit?
Add your desired profit to the fixed costs before dividing by the contribution margin. This calculator does it for you: enter a target profit and it shows the units and revenue needed not just to break even but to earn that profit on top. It is the quickest way to turn a break-even analysis into a concrete sales goal for a month, quarter or product launch.
How do I lower my break-even point?
You have three levers, and it helps to know which moves the needle most. You can raise your price, cut a fixed cost, or reduce the variable cost per unit. Raising the price and cutting the variable cost both widen the contribution margin per unit, so each sale covers fixed costs faster, often the quickest way to drop the break-even point. Cutting fixed costs lowers the total you must cover in the first place. A small change to price or variable cost usually shifts the break-even point more than an equal cut to fixed costs, so test each lever in the calculator.
What is the difference between fixed and variable costs?
Fixed costs stay the same no matter how much you sell, such as rent, salaries, insurance and software subscriptions. Variable costs rise and fall with each sale, such as raw materials, packaging, payment-processing fees and shipping. The distinction is the heart of break-even analysis: fixed costs are the total you must cover, and the gap between your price and your variable cost per unit, the contribution margin, is what covers them. Sorting your costs into the two buckets is the first step to an accurate break-even point.