Break Even Calculator

Calculate the sales volume and revenue needed to cover fixed and variable costs. Add a target profit and expected sales forecast to see the contribution margin, required units, projected profit, and margin of safety in one place.

Clear intent boundary
Use this calculator for business units and revenue. For advertising efficiency, use the separate Break Even ROAS Calculator.

Calculate Your Break-Even Point

Free business tool
Costs that do not change with each unit sold, for the same time period as your forecast.
Average net revenue collected for one product, service package, seat, or subscription period.
Direct cost that rises with each sale, including materials, fulfillment, commissions, or transaction fees.
Optional operating-profit goal for the same period. Enter 0 to calculate only the break-even point.
Optional forecast used to estimate profit and margin of safety against the break-even volume.
Break-even sales volume
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Break-even revenue
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Contribution per unit
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Contribution margin
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Units for target profit
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Profit at expected volume
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Margin of safety
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Break-even threshold Expected sales progress

Try a Break-Even Example

Load a realistic scenario, then replace the assumptions with figures from your own monthly, quarterly, annual, or project budget.

Break-Even Formula and Target-Profit Formula

The calculator starts with contribution per unit, because only the amount left after variable cost can pay fixed costs and create operating profit.

Contribution per unit

Selling price per unit − Variable cost per unit

If a product sells for $50 and its variable cost is $20, each unit contributes $30 toward fixed costs and profit.

Break-even point in units

Fixed costs ÷ Contribution per unit

The result is rounded up to a whole unit. A fractional unit cannot normally complete the break-even requirement.

Break-even revenue

Rounded break-even units × Selling price per unit

This is the approximate sales revenue produced by the whole-unit break-even volume.

Units for a target profit

(Fixed costs + Target profit) ÷ Contribution per unit

Adding desired profit to fixed costs converts a break-even analysis into a practical sales target.

Margin of safety

(Expected units − Exact break-even units) ÷ Expected units

A positive percentage shows how far expected sales can fall before the business reaches break even. A negative result signals a forecast below the threshold.

Worked Break-Even Calculation

This example shows how the same inputs flow from contribution margin to break-even units, revenue, and a target-profit goal.

StepCalculationResult
Contribution per unit$50 selling price − $20 variable cost$30
Break-even units$10,000 fixed costs ÷ $30334 units after rounding up
Break-even revenue334 units × $50$16,700
Units for $5,000 profit($10,000 + $5,000) ÷ $30500 units

How to Use This Break Even Calculator

Choose one consistent planning period before entering numbers. For example, use monthly fixed costs with monthly expected unit sales, or annual fixed costs with annual expected sales. Mixing monthly rent with annual sales produces a misleading answer even when the formula is mathematically correct.

Enter the average selling price actually collected after normal discounts. Then estimate the variable cost for one additional sale. The tool calculates instantly as inputs change, but the Calculate button is also available for keyboard and form-based use.

  • Enter fixed costs for the selected period.
  • Enter net selling price and variable cost for one unit.
  • Add an optional target profit and expected sales forecast.
  • Review break-even units, revenue, contribution margin, target units, projected profit, and margin of safety.
  • Test a lower price, higher cost, or lower sales scenario before making a decision.

What the Break-Even Point Tells You

The break-even point is the volume where contribution from sales equals fixed costs. At that threshold, the modeled operating result is approximately zero: the business has covered the included costs but has not yet produced operating profit. Every unit above the threshold adds its contribution per unit to profit, assuming price and costs remain stable.

The result is a planning estimate, not a promise. Taxes, financing costs, owner draws, inventory timing, refunds, bad debt, capacity limits, and step changes in overhead can affect real cash flow. Use the calculator to compare assumptions and identify the variables that matter most.

  • A higher selling price lowers required units when demand is unchanged.
  • A higher variable cost reduces contribution and raises the break-even point.
  • A new fixed expense raises the threshold even if unit economics stay the same.
  • A target-profit volume is usually more useful for budgeting than break even alone.

Break-Even Point vs. Break-Even ROAS

A general break-even calculator answers how many units or how much revenue a business must generate to cover fixed and variable costs. It is useful for pricing, product launches, retail planning, service capacity, manufacturing, events, and subscription forecasts.

Break-even ROAS is an advertising metric. It asks how much attributed revenue must be generated per unit of ad spend after product and fulfillment costs. If your decision is about fixed overhead and total sales volume, stay on this page. If it is about campaign CPA, contribution profit before ads, or required return on ad spend, use the Break Even ROAS Calculator instead.

  • Business break even: fixed costs, unit price, variable cost, sales volume, and target profit.
  • Advertising break even: order economics, ad spend, break-even CPA, and break-even or target ROAS.
  • Pricing analysis: use the Markup Calculator when the main question is selling price, markup, margin, or profit per unit.

Accuracy, Assumptions, and Edge Cases

Use weighted averages when a business sells multiple items but you still want one blended estimate. A weighted average selling price and weighted average variable cost can produce a useful portfolio-level model, but a separate product-level analysis is safer when margins differ widely.

The calculator blocks a variable cost equal to or above selling price because the contribution per unit would be zero or negative. No finite sales volume can cover fixed costs under that assumption. For businesses with tiered pricing, overtime labor, bulk discounts, or capacity expansion, run separate scenarios around each cost or price step.

  • Keep currency and time period consistent across every input.
  • Use net revenue after expected discounts and refunds.
  • Round units up, not down, when products or projects cannot be sold fractionally.
  • Recalculate when price, supplier cost, rent, payroll, or sales mix changes.
  • Use accounting or financial advice for decisions that require audited classifications or cash-flow forecasting.

What Counts as Fixed Cost or Variable Cost?

Classify each cost according to how it behaves in the selected period. The same expense can behave differently in another business model.

Common fixed costs

Rent, base payroll, insurance, software subscriptions, equipment leases, permits, and other expenses that remain broadly stable within the planned capacity range.

Common variable costs

Materials, packaging, fulfillment, card fees, marketplace commissions, sales commissions, shipping subsidies, usage-based hosting, and direct labor tied to each unit.

Semi-variable costs

Utilities, support labor, maintenance, and cloud infrastructure may contain both a fixed base and a usage component. Split them when the distinction materially changes the result.

Step costs

A second shift, warehouse, vehicle, machine, or manager can make fixed costs jump after a capacity threshold. Run a second scenario beyond that point.

Taxes and financing

This operating model does not automatically include income tax, loan principal, interest, owner draws, or working-capital timing. Add only the costs appropriate to your planning question.

Multiple products

Use product-specific calculations or a stable weighted sales mix. A single average can hide an unprofitable low-margin item or overstate the contribution of a high-margin item.

Break Even Calculator FAQ

Direct answers to common break-even point, formula, revenue, pricing, and target-profit questions.

Subtract variable cost per unit from selling price to get contribution per unit. Divide total fixed costs by that contribution, then round up when units must be whole. This calculator also multiplies the rounded unit result by selling price to estimate break-even revenue.

Break-even units = fixed costs ÷ (selling price per unit − variable cost per unit). The denominator is contribution per unit. If contribution is zero or negative, there is no finite break-even volume under the assumptions entered.

For a single-product model, multiply the rounded break-even units by selling price. Another approach divides fixed costs by the contribution margin ratio, but rounding and a mixed product portfolio can make the results differ slightly.

There is no universal target. A larger positive margin provides more room for sales to fall before reaching break even, but acceptable risk depends on demand volatility, cash reserves, seasonality, fixed commitments, and how quickly costs can be reduced.

Yes. Treat one project, appointment, billable day, package, or retained client period as a unit. Include contractor time and other delivery costs in variable cost, while base payroll and office expenses may belong in fixed costs.

Yes. The calculator adds target profit to fixed costs and divides the total by contribution per unit. The answer is rounded up to show the minimum whole-unit sales target.

A discount reduces contribution per unit unless variable cost falls by the same amount. With less contribution from each sale, more units are required to cover the same fixed costs.

No. This page calculates business sales volume and revenue from fixed and variable costs. Break-even ROAS focuses on advertising return, acquisition cost, and order-level contribution. Use the linked ROAS calculator for campaign planning.

Reference

Use the formula as a planning model and verify accounting classifications against your own records and professional guidance when material.

Calculate Your Break-Even Point

Replace the sample values with consistent cost, price, and sales assumptions, then test a conservative scenario before setting a sales target.

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