Break-Even Point Calculator

What is a break-even point?

The break-even point is the sales volume at which a business's total revenue exactly equals its total costs — no profit, no loss. Below that volume you're operating at a loss; above it, every additional unit sold contributes to profit. It's one of the most common calculations in small-business planning, pricing strategy and startup financial modeling, because it answers a simple but critical question: "how much do I need to sell before this makes money?"

The calculation rests on separating costs into two types:

• Fixed costs — expenses that stay the same regardless of how much you sell (rent, salaries, insurance, software subscriptions).
• Variable cost per unit — the cost that scales directly with each unit sold (materials, packaging, shipping, payment processing fees, sales commissions).

The difference between your price and your variable cost per unit is the contribution margin — the amount each sale contributes toward covering fixed costs (and, beyond break-even, toward profit).

How it's calculated

Contribution Margin       = Price per Unit − Variable Cost per Unit
Contribution Margin Ratio = Contribution Margin ÷ Price per Unit
Break-Even Units          = Fixed Costs ÷ Contribution Margin
Break-Even Revenue        = Break-Even Units × Price per Unit

If the price per unit doesn't exceed the variable cost per unit, the contribution margin is zero or negative — every sale loses money, and there is no volume at which the business can break even. The calculator flags this case explicitly instead of showing a meaningless (infinite or negative) number of units.

How to use this tool

1. Enter your Fixed Costs — the total, recurring costs that don't change with sales volume (for the period you're analyzing, typically monthly or annually).
2. Enter your Price per Unit — what you charge the customer for one unit of your product or service.
3. Enter your Variable Cost per Unit — what it costs you to produce or deliver one more unit.

The result table updates instantly and shows the break-even point in both units and revenue, along with the contribution margin and its ratio to price — useful context when comparing pricing scenarios.

FAQ

Why does break-even use units, not just revenue? Revenue alone doesn't tell you whether you're profitable, because it ignores how costs split between fixed and variable. Break-even units ties the answer to something you can act on directly — how many orders, customers or transactions you need.

What if I round the break-even units? The calculator rounds break-even units up to the nearest whole unit, since you can't sell a fraction of a unit and any partial unit still needs to be covered.

Can the contribution margin ratio be used to compare products? Yes — a higher contribution margin ratio means each sale keeps more of its price as profit contribution after variable costs, which is useful for comparing the underlying profitability of different products or pricing tiers independent of volume.

Does this account for taxes, financing costs or one-time expenses? No — this is a standard cost-volume-profit break-even calculation using fixed and variable operating costs only. For a fuller financial picture, combine it with a broader budget or forecast.

Privacy

All calculations run entirely in your browser. Nothing you enter is sent to a server or stored anywhere.