There is a question that runs through the mind of almost every entrepreneur, often at night rather than during the day: "am I selling enough for it to be worth it?" We launch a store, invest in stock or tools, cross our fingers, and for a long time, we have no precise idea of the figure to reach just to stop losing money. This break-even calculator exists to put an end to this uncertainty: it tells you, in black and white, how many units you need to sell before you start making money, not just spending it.

The break-even point is that precise moment when your sales stop being a gamble and finally become a real income. Below it, each additional sale reduces your loss but does not make you money yet. Beyond it, every sale becomes net profit. This figure is not abstract: it is often what determines whether you can pay yourself a salary, reinvest, or if you need to keep relying on your savings for a few more months.

Many project leaders avoid this calculation, sometimes without admitting it to themselves, because they are afraid of the result. It is human. But ignoring this figure does not make it disappear; it simply continues to weigh on you in silence. Using this calculator means taking back control: enter your fixed costs (rent, subscriptions, salaries, tools), your variable cost per unit (purchase, production, packaging, commission), and your selling price. In a few seconds, you know exactly where you stand, with no grey areas or reassuring approximations.

The mechanics behind this calculation are simple, almost disarmingly simple once you understand them: fixed costs divided by the difference between your selling price and your variable cost. This difference is your contribution margin, the one that will progressively pay off your fixed charges and, finally, make you money. The more comfortable it is, the less volume you need to breathe. If it is too low, or even negative, no volume of sales will save you: you will need to review the price or the cost structure before going any further, however frustrating that may be to hear.

Let's take an example to make things concrete: you sell a product for €40, with a variable cost of €15 and €5,000 in fixed charges each month. Your contribution margin is €25, and your break-even point falls at 200 units per month. Below 200 sales, you are still financing your charges. Beyond that, every sale finally boosts your profit, not just your revenue. It is often upon seeing this figure written in black and white that many entrepreneurs realize, with relief or concern depending on the case, how different their situation was from what they imagined.

In e-commerce, this calculation is all the more important as costs add up quickly and discreetly: acquisition, platform commissions, payment methods, returns, logistics. They are easily forgotten one by one, yet together, they can transform a business you thought was profitable into a silent pit. To see clearly, cross-reference this result with a margin calculator which checks the profitability of each product, and with a ROI calculator to know if your advertising investments are actually making you money or costing you more than they bring in.

The price you set has a huge weight on this threshold, much more than one might imagine when deciding on it. Before giving in to the urge to run a promotion to "drive volume", measure its real impact with a discount calculator : a discount may seem generous to the customer while making your break-even point practically unattainable. A markup calculator helps you, beforehand, set a price that already protects your financial balance rather than weakening it.

If you work in dropshipping, never forget to integrate the supplier cost and shipping fees into your variable costs: these are often the most underestimated items, and the most responsible for a break-even point discovered too late, too high. A dropshipping profit calculator completes this calculation by taking these specific realities into account, and a shipping fee calculator helps you leave nothing out.

Once you have the figure in hand, the real question becomes: is it realistic? Look honestly at your traffic, your conversion rate, and your average cart value. If the required volume seems out of reach, it is not necessarily your offer that is bad, it might be your average cart value that needs to grow. An AI chatbot dedicated to increasing the average cart value can recommend the right complementary products at the right time, without having to lower your prices or multiply visitors to reach your threshold.

Automatic promotions and poorly thought-out B2B pricing can also drive this threshold up much faster than you think. Our guides on automatic discounts in e-commerce and personalized B2B pricing help you keep this figure under control, while a well-thought-out product recommendation helps you sell more without ever eating into your margin.

This calculator will not make your business profitable for you, but it prevents you from moving forward with your eyes closed. Use it before every launch, after every price change, as soon as your costs move. Cross-referenced with your margin, your ROI, and your logistical costs, this figure gives you something rare and valuable: the certainty of knowing, rather than hoping, that your business stands strong.