Break-Even Calculator

Find your break-even point, with a live chart

This free break-even calculator shows exactly how many units you need to sell, and the revenue that represents, to cover your fixed and variable costs. Enter your fixed costs, price per unit, and variable cost per unit, and every result updates instantly — break-even units, break-even revenue, contribution margin, a target-profit goal, your margin of safety, and a live break-even chart.

It handles a single product or a full sales mix, works in your choice of currency, and everything runs in your browser, so none of your numbers are ever uploaded. No spreadsheet required, no account needed.

The break-even formula, explained

The break-even point in units is fixed costs ÷ contribution margin per unit, where the contribution margin is your price per unit minus its variable cost. Each unit you sell contributes that margin toward your fixed costs; once they are fully covered, every additional unit's margin becomes profit.

To express the break-even point in sales dollars, divide fixed costs by the contribution margin ratio (the margin as a percentage of price) — not by the dollar margin, a mistake many calculators make. This tool shows the margin per unit, the ratio, and both break-even figures side by side so you never need to run two separate calculations.

Read the break-even chart at a glance

The chart plots units sold on the horizontal axis against money on the vertical axis. The revenue line rises from zero, the total-cost line starts at your fixed costs, and the point where they cross is your break-even point. Everything to the left of it is shaded as a loss; everything to the right is profit.

Seeing the gap widen makes it obvious how sensitive your business is to sales volume — and you can download the chart as a PNG for a pitch deck or business plan, or export the underlying numbers as a CSV. A visual break-even chart is something Shopify's free tool, calculator.net, and most basic spreadsheet templates don't include.

Competitor comparison: why UtiloKit beats free alternatives

Shopify's Break-Even Calculator (shopify.com/tools) is designed for simple e-commerce scenarios — one product, one price, basic output. It has no chart, no margin-of-safety field, and no multi-product mode. Calculator.net's Business Calculator and Omni Calculator's Break-Even Calculator both provide formula-driven outputs but no live chart and no what-if scenario modeling.

Paid tools like QuickBooks (starts at $30/month) and Freshbooks include break-even analysis buried inside their accounting dashboards, but require subscriptions and bank connections. Bench.co and Wave are similar. UtiloKit offers the chart, the margin of safety, target-profit modeling, and the multi-product sales mix — all free, no login, no upload, and no subscription.

Plan for a target profit, not just zero

Breaking even is the floor, not the goal. Enter a target profit and the calculator tells you how many units and how much revenue you need to earn it, using (fixed costs + target profit) ÷ contribution margin per unit. It is the fastest way to turn a profit goal into a concrete sales target you can plan around, and the target volume is marked on the chart right alongside your break-even point.

This feature is absent from most free break-even tools and is the reason many small business owners end up using paid software just to model profit scenarios. With UtiloKit you get it at no cost.

Margin of safety and multiple products

Enter your expected or actual unit sales and the tool calculates your margin of safety — how far sales can fall before you slip into a loss — in units, in revenue, and as a percentage. A margin above roughly 20% is generally considered healthy; under 10% is a warning sign that small dips in demand could push you into the red.

Most businesses sell more than one thing. Switch to sales-mix mode to add several products, each with its own price, variable cost, and share of unit sales. The calculator computes a weighted-average contribution margin and a blended break-even point, then breaks the result down product by product — analysis that almost no free calculator offers, and far more realistic than pretending you sell a single item.

Works on iPhone, Android, and desktop: no download needed

The break-even calculator is fully responsive and works on any device: iPhone, Android phone, iPad, or desktop. All inputs, the live chart, and every export option are accessible on a small screen without zooming. There's no app to download, no account to create, and no sign-up required.

Everything runs offline after the page loads. Your cost and price data is never sent to any server — unlike cloud-based calculators from QuickBooks, Bench, or Freshbooks that process your financial inputs on their servers. This makes it safe to use on corporate networks or with confidential pricing information.

Fixed costs vs. variable costs: the classification that drives break-even

Fixed costs are expenses that do not change with output volume: rent, base salaries, equipment depreciation, insurance premiums, and loan payments stay the same whether you produce ten units or ten thousand. Variable costs scale directly with each unit produced or sold — raw materials, direct labor, outbound shipping, packaging, and sales commissions all rise and fall in lockstep with volume. Every dollar that belongs in fixed costs raises your break-even point by exactly 1 ÷ contribution-margin-ratio dollars of required revenue, which is why correctly separating the two categories is the single most important step before running any break-even analysis.

Between the two extremes sit semi-variable (mixed) costs. Electricity is the textbook example: a building has a base load that runs regardless of production activity, plus a variable component that rises with each machine-hour run. Vehicle fleets are similar — the monthly lease payment is fixed, but fuel and tyre wear are variable. For break-even purposes, split these into their fixed and variable components; most accounting software can pull the data needed to estimate the split from historical bills. A related concept is step costs: a cost that is fixed within a range but jumps at a threshold. One quality-control supervisor can handle up to 20 workers; hire worker 21 and you need a second supervisor at full salary. Step costs make break-even non-linear at certain volumes, so be aware of upcoming step-ups when projecting growth.

It is worth noting that the fixed/variable distinction used in break-even analysis is different from the direct/indirect and product/period distinctions used in financial accounting. Accounting separates costs by whether they attach to a product (product costs: materials, direct labour, manufacturing overhead) or flow through to the income statement in the current period (period costs: selling and admin expenses). A cost can be both fixed and a product cost (factory depreciation), or variable and a period cost (sales commissions). Break-even analysis cuts across those categories and asks only one question: does this cost change when I produce one more unit? If yes, it is variable; if no, it is fixed.

Break-even analysis across different business models

For a physical product business, the break-even formula is at its most straightforward: unit price, cost of goods per unit, and a clear set of overhead costs combine to give a target unit count. Service businesses require a different framing. The equivalent of 'units sold' is billable hours: divide total monthly overhead by your hourly rate minus the variable cost per hour (e.g. contractor fees or materials used per engagement). The result tells you how many client hours must be invoiced each month before the practice covers its costs — a far more actionable number than a theoretical unit count.

SaaS and subscription businesses denominate their break-even in monthly recurring revenue (MRR). The question becomes: what MRR must the company reach to equal its monthly burn rate? This sounds simple, but churn complicates the picture: if 3% of subscribers cancel each month, the company must continuously acquire new customers just to hold MRR flat, which means the true break-even customer count is higher than the static formula suggests. Modelling churn-adjusted break-even requires projecting a retention curve, not just a single division. Restaurants sit at the hard end of the spectrum — food cost as a percentage of revenue (typically targeted at 28–35%), labour as the largest variable cost, high fixed rent and equipment leases, and wildly seasonal demand. The industry's ~60% first-year failure rate is partly attributable to underestimating the combination of high fixed overhead and thin, volatile contribution margins.

When you sell multiple products, no single product's contribution margin is the right divisor for shared fixed costs. Instead, calculate a weighted-average contribution margin: multiply each product's contribution margin per unit by its share of total unit sales, then sum the results. Divide fixed costs by that blended figure to get the total break-even units, then allocate back to each product by its mix percentage. The critical insight is that changing your sales mix — even without changing prices or costs — changes your blended break-even point. Selling more of your lowest-margin product pushes break-even up; selling more of your highest-margin product pulls it down.

Margin of safety and operating leverage

The margin of safety measures business resilience: it is the gap between your actual (or projected) sales and your break-even sales, expressed as a percentage of actual sales. The formula is (Actual Sales − Break-Even Sales) ÷ Actual Sales × 100%. A margin of safety of 25% means sales can fall by a quarter before you begin losing money. A margin below 10% signals that almost any unexpected drop in demand — a slow month, a new competitor, a supply chain disruption — could push you into a loss. Tracking your margin of safety alongside your break-even point converts a one-time calculation into an ongoing gauge of how much buffer your business actually has.

Operating leverage describes the relationship between your cost structure and your profit sensitivity to volume changes. A business with high fixed costs relative to total costs has high operating leverage: once it clears its large fixed-cost base, incremental revenue flows to profit at an accelerating rate. Below break-even, the same dynamic works in reverse — losses mount quickly because fixed costs continue regardless of falling revenue. Airlines are the canonical example. A commercial aircraft has enormous fixed costs (lease payments, crew salaries, airport fees) regardless of how many seats are filled. A flight running at 60% load factor loses money; the same flight at 85% load factor is highly profitable — the fixed costs are identical, but the revenue has risen by 40% while costs barely moved. The contribution margin ratio is the precise link to operating leverage: a higher ratio means each dollar of revenue contributes more to covering fixed costs, so profit grows faster above break-even — and the degree of operating leverage (DOL) at any sales level equals the contribution margin ratio divided by the profit margin ratio at that point.

Understanding operating leverage is why price cuts are so dangerous in high-fixed-cost businesses. Reducing the contribution margin ratio while fixed costs stay constant forces a proportionally larger increase in volume just to maintain the same profit. A business with a 40% contribution margin ratio that cuts prices by 10% (dropping the ratio to roughly 30%) must increase unit volume by 33% just to break even at the same profit level — a counterintuitive result that operating leverage arithmetic makes obvious.

Where break-even analysis has limits

Break-even analysis rests on linear assumptions that rarely hold perfectly in practice. It assumes price and variable cost per unit stay constant across all volumes — ignoring the reality that suppliers offer bulk-purchase discounts that lower variable costs at scale, and that customers often resist price increases or respond to promotions with elastic demand. These non-linearities mean the real break-even curve is not a straight line but a curve, and the static formula is an approximation that works best when you are modelling a relatively narrow volume range around your current operating level. It also assumes a fixed product mix, which almost never holds in multi-product businesses where customers continuously shift their buying patterns.

The analysis is also a static snapshot. It does not account for growth trajectories, inflation eroding real margins, or market changes that shift demand over time. More importantly, it ignores the time value of money: reaching break-even in 24 months versus 60 months is radically different from a capital perspective — the longer path requires significantly more funding, carries more execution risk, and destroys more present value. For investment decisions with a multi-year horizon, break-even analysis should be paired with net present value (NPV) and internal rate of return (IRR) analysis, which account for the cost of capital and the declining value of future cash flows.

Finally, the standard break-even formula produces an accounting break-even — the point where accounting profit equals zero. This is not the same as cash break-even, which is the point where cash inflows equal cash outflows. The difference lies in non-cash charges: depreciation reduces accounting profit but does not consume cash, so a business's cash break-even is actually lower than its accounting break-even by the amount of non-cash expenses. For survival analysis — how long can we operate before we run out of money? — cash break-even is the more important figure. For lender and investor reporting, accounting break-even is what matters. Knowing which question you are asking determines which version of the calculation you should use.