Break-even calculator

Use this break-even calculator for units, revenue and contribution margin. Split fixed and variable costs, set a profit target and test price and cost changes.

Free, no sign-up. Your entries stay in your browser.

Break-even units divide fixed costs by selling price minus variable cost per unit. Whole units round up; revenue multiplies those units by price. Check contribution margin, exact revenue and a profit target, then change price, variable cost or fixed cost. Sensitivity scenarios hold other inputs fixed and do not predict demand.

Your numbers

Currency changes formatting only. It does not convert amounts.

Enter amounts up to 1 trillion. Use your language’s decimal and grouping separators. Empty and invalid fields do not become zero.

Your result

Enter valid numbers to see the result. Costs and final values must be non-negative. Investment must be positive; annualisation needs a positive period; target margin must be below 100%. For break-even, price must exceed variable cost. Values that exceed the calculation limit need smaller inputs.

How to use this tool

Use one period
Fixed costs cover the period you want to assess. Price and variable cost are per unit. Use the same currency for every amount. Variable cost rises with each unit sold. Optional planned sales must be a whole number.
Find the crossing
Contribution per unit = price minus variable cost. Exact break-even units = fixed costs / contribution. The reported whole-unit result rounds up. Chart revenue = units × price; chart total costs = fixed costs + units × variable cost.
Test price and cost changes
Each what-if amount = current amount × (1 + change / 100). Price, variable cost and fixed cost can change together. The sensitivity table changes them separately. Target-profit units divide fixed costs plus target profit by contribution. These scenarios do not estimate demand or capacity.

Calculation method and assumptions

Questions before you start

Every unit must contribute something toward fixed costs. If price equals or falls below variable cost, selling more units cannot cover positive fixed costs. Increase price or lower unit cost to calculate a finite break-even point.

When selling whole units, a fraction of a unit cannot cover the remaining cost. The chart shows the exact mathematical crossing; the reported units and revenue use the next whole unit.

Yes. A unit may be a booking, billable hour or subscription period. Keep the period consistent and include the variable costs associated with that unit. The model does not estimate demand.

Related tools

  • Profit margin calculator

    Use this profit margin calculator for product pricing or accounting figures. Solve missing cost, price or profit and convert between margin and markup.

  • Markup calculator

    Use this markup calculator to solve cost or selling price from a markup or target margin. Convert either percentage and compare price sensitivity.

  • ROI calculator

    Use this ROI calculator for total and annualized return, net gain or a target ROI. Solve required gain or investment and compare return sensitivity.

Find the next source of business enquiries

Check how AI assistants find and describe your business with the free visibility scan. It is a separate check from these financial calculations.

Run the free AI visibility scan