Before a business turns a profit, it first has to cover its costs the point where total revenue exactly equals total costs is the break-even point. Below it, you’re operating at a loss; above it, every additional sale is pure profit. Our Break-even Calculator tells you exactly how many units you need to sell (or how much revenue you need) to get there.

How to Use the Break-even Calculator

Enter your total fixed costs (rent, salaries, insurance costs that don’t change with sales volume)
Enter your selling price per unit
Enter your variable cost per unit (materials, direct labor per item)
Instantly see your break-even point in units and in revenue

Formula

Break-even point in units:

Break-even Units = Fixed Costs ÷ (Price per Unit − Variable Cost per Unit)

Break-even point in revenue:

Break-even Revenue = Break-even Units × Price per Unit

The denominator in the units formula Price minus Variable Cost is called the contribution margin per unit: the amount each sale contributes toward covering fixed costs before any profit begins.

Variables Explained

Fixed costs expenses that stay constant regardless of how much you sell: rent, salaried staff, insurance, loan payments, and similar overhead.

Selling price per unit the price charged to the customer for one unit of the product or service.

Variable cost per unit costs that scale directly with production or sales volume: raw materials, packaging, direct labor per item, and sales commissions.

Contribution margin the amount left from each sale after covering variable costs, available to pay down fixed costs and, once those are covered, contribute to profit.

Example Calculation

A small business has $20,000 in monthly fixed costs, sells a product for $50 per unit, with a variable cost of $30 per unit.

Contribution Margin = 50 − 30 = $20 per unit

Break-even Units = 20,000 ÷ 20 = 1,000 units

Break-even Revenue = 1,000 × 50 = $50,000

This business must sell exactly 1,000 units per month just to cover all costs. The 1,001st unit sold contributes its full $20 margin toward profit.

Real-Life Examples

Café opening a new location: Monthly fixed costs (rent, staff, utilities) total $15,000. Average sale per customer is $12, with an average variable cost (ingredients, packaging) of $4 per sale. Contribution Margin = 12 − 4 = $8. Break-even Units = 15,000 ÷ 8 = 1,875 transactions/month, or about 62-63 customers per day across a 30-day month.

Software subscription business: Fixed monthly costs are $8,000. Subscription price is $25/month, with negligible variable cost (say $2 for support/infrastructure per user). Contribution Margin = 25 − 2 = $23. Break-even Units = 8,000 ÷ 23 ≈ 348 subscribers.

Manufacturer evaluating a price cut: A manufacturer with $50,000 fixed costs currently sells at $40/unit (variable cost $25, margin $15) and needs 3,334 units to break even. If they drop price to $35 to compete, margin falls to $10, raising break-even to 5,000 units a 50% increase in the volume needed just to cover the same costs, illustrating why price cuts require careful break-even recalculation.

Benefits of Using a Break-even Calculator

Validates pricing decisions see immediately how a price change affects the sales volume needed to stay afloat
Supports business planning set realistic sales targets grounded in actual cost structure, not guesswork
Useful for new product launches estimate feasibility before committing to production
Clarifies the impact of fixed cost changes model what happens to break-even if rent or staffing costs increase

Common Mistakes

Leaving out indirect fixed costs. Forgetting overhead like insurance, software subscriptions, or administrative salaries understates fixed costs and produces an artificially low (and misleading) break-even point.

Miscategorizing variable costs as fixed, or vice versa. Costs that scale with volume (like packaging or commissions) must be treated as variable misclassifying them skews the contribution margin and the whole calculation.

Assuming break-even means profitable. Reaching break-even means costs are covered it does not mean the business is profitable yet. Profit only begins above the break-even point.

Ignoring that break-even shifts with any cost or price change. A single change in rent, materials cost, or selling price moves the break-even point it should be recalculated whenever key numbers change, not treated as fixed forever.

FAQs

How do you calculate break-even point in units?
Divide total fixed costs by the contribution margin per unit (selling price minus variable cost per unit). The result is the number of units that must be sold to cover all fixed costs.

What is the break-even formula?
Break-even Units = Fixed Costs ÷ (Price per Unit − Variable Cost per Unit). Multiply the result by the price per unit to get break-even revenue.

What is contribution margin?
It’s the amount each unit sold contributes toward covering fixed costs, calculated as selling price minus variable cost per unit. Once enough units are sold to cover all fixed costs via their contribution margins, every additional sale becomes profit.

How can a business lower its break-even point?
By reducing fixed costs, reducing variable costs per unit, or increasing the selling price any of these raises the contribution margin relative to fixed costs, lowering the number of units needed to break even.

Once you’ve found your break-even point, our Profit Margin Calculator shows how profitable sales are above that point. Pricing with tax in mind? Check our GST Calculator or VAT Calculator. Evaluating whether a new product or investment is worth pursuing? Our ROI Calculator is a natural next step, and our Percentage Calculator and Discount Calculator help round out pricing-related decisions.

Conclusion

Every business has a number it needs to hit before it starts making money the break-even point makes that number explicit instead of a guess. Use the calculator above to find exactly how many units or how much revenue you need to cover your costs, and start planning from there.

Break-even Calculator