Break-Even Point Calculator

The break-even point is the moment a business stops losing money and starts making it — the exact level of sales where total revenue equals total cost. Enter your fixed costs, your price per unit and your variable cost per unit, and this free calculator shows how many units you must sell to break even, the revenue that represents, and the contribution margin doing the work behind it.

What is the break-even point?

The break-even point is the level of sales at which a business neither makes a profit nor a loss. Every sale below it loses money; every sale above it adds profit. It is one of the first numbers any founder, store owner or product manager should know, because it turns a vague worry — "are we selling enough?" — into a single, concrete target.

To find it, you separate your costs into two kinds. Fixed costs stay the same no matter how much you sell: rent, salaries, software, insurance. Variable costs rise with each unit sold: materials, packaging, shipping, payment fees. The break-even point is where the money left over from sales — after variable costs — finally covers all the fixed costs.

The break-even formula

The calculation rests on one key figure, the contribution margin:

Contribution margin per unit = price − variable cost per unit

This is the amount each sale "contributes" toward covering fixed costs. From it the rest follows:

Break-even point (units) = fixed costs ÷ contribution margin per unit

Break-even revenue = break-even units × price

Contribution margin (%) = contribution margin ÷ price × 100

If the contribution margin is zero or negative, there is no break-even point at all — every sale loses money before fixed costs are even considered, and the price or cost structure has to change.

A worked example

A small studio has $8,000 in fixed monthly costs. It sells a product for $50 that costs $20 in materials and fulfilment.

• Contribution margin: $50 − $20 = $30 per unit
• Contribution margin %: $30 ÷ $50 = 60%
• Break-even units: $8,000 ÷ $30 ≈ 267 units
• Break-even revenue: 267 × $50 ≈ $13,350

So the studio must sell about 267 units a month just to cover costs. Unit 268 is the first that earns real profit — $30 of it.

Why the contribution margin matters most

The single biggest lever on your break-even point is the contribution margin, not the headline price. Raising the price by a few dollars, or shaving a few dollars off the variable cost, widens the margin and pulls the break-even point down sharply — because you divide the same fixed costs by a bigger number. In the example above, lifting the margin from $30 to $40 (a 33% improvement) drops the break-even from 267 units to 200 — a 25% lower target for the same fixed costs. This is why cost-cutting on materials and small price increases have such an outsized effect on profitability.

Break-even point with a target profit

Break-even is the floor, but most businesses want a specific profit, not just survival. To find the sales needed to hit a target profit, simply add that target to your fixed costs before dividing: (fixed costs + target profit) ÷ contribution margin per unit. If our studio wanted $3,000 of monthly profit, it would need ($8,000 + $3,000) ÷ $30 ≈ 367 units. The same logic scales to any goal — it just shifts the target up by the profit you require.

How to lower your break-even point

There are only three levers, and most businesses can pull all of them: raise the price (even modestly, where the market allows), reduce the variable cost per unit (better sourcing, less waste, lower fees), or cut fixed costs (cheaper tools, less overhead). The first two widen the contribution margin; the third shrinks the number you have to cover. Automating repetitive fixed-cost work — admin, support, data entry — is a fourth, quieter lever: it reduces the labour portion of fixed costs without touching the product, which lowers the break-even target month after month.

Common mistakes

The most frequent error is misclassifying costs — treating a variable cost as fixed, or vice versa — which throws the whole calculation off. Commissions, payment processing fees and shipping are variable (they scale with sales) even though they feel like overhead. A second mistake is ignoring time: a break-even of "267 units" means little without a period attached. Always tie fixed costs and the resulting break-even to the same window — usually a month — so the target is something you can actually track against.

When to use a break-even analysis

Run a break-even analysis before launching a product, signing a lease, hiring, or setting a price. It tells you the minimum viable scale of an idea in a single number, and it makes trade-offs visible: you can instantly see whether a price cut needs to be matched by a big volume increase, or whether a cost saving meaningfully de-risks the business. It is equally useful as an ongoing dashboard metric — knowing you are "60 units past break-even this month" is far more motivating and actionable than a raw revenue figure.

Frequently asked questions