Toolkit Shelf

Business Calculators

Break-Even Calculator

Use this break-even calculator to estimate how many units or how much revenue is needed to cover fixed and variable costs.

Reviewed May 25, 2026EstimateFormula shown

Quick answer

Break-Even Calculator: what it calculates

Break-Even Calculator calculates break-even units from fixed costs, price per unit and variable cost. The core method is Break-even units = fixed costs / (price per unit - variable cost per unit).

ResultBreak-even units
InputsFixed costs, Price per unit, Variable cost, Target profit
FormulaBreak-even formula

Live calculator

Break-even point

Break-even units250

$48.00 contribution margin per unit.

Break-even revenue$19,750.00

60.8% contribution margin rate.

Units for target profit355

Includes $5,000.00 target profit.

Formula

Break-even formula

Break-even units = fixed costs / (price per unit - variable cost per unit)

The difference between price and variable cost is the contribution margin per unit.

How to use

Steps

  1. Enter fixed costs for the period.
  2. Enter price per unit and variable cost per unit.
  3. Add a target profit if you want a profit goal above break-even.
  4. Review break-even units, revenue, and contribution margin.

Example

Sample calculation

Fixed costs$12,000
Price - variable cost$48
Break-even units250

Calculator use

Best for

  • Use this break-even calculator to estimate how many units or how much revenue is needed to cover fixed and variable costs.
  • Checking break-even formula with the formula and assumptions visible.
  • Comparing the result with the sample calculation and benchmark table before using it elsewhere.
  • Pricing, runway, cash flow, or work assumptions before an operating decision.

Before relying on it

Check first

  • Using the break-even units without confirming that fixed costs, price per unit and variable cost describe the same real-world case.
  • Ignoring that the difference between price and variable cost is the contribution margin per unit.
  • Relying on the number without checking whether the visible assumptions match the real-world task.
  • Mixing cash and accounting profit, or monthly recurring items and one-time items.

Benchmarks

How to read the result

The calculator is a decision aid, not a fixed rule. Use the output to compare scenarios and document your assumptions. Benchmark ranges are broad planning heuristics unless this page names a specific source for the range.

Negative contributionNo break-even

If variable cost is greater than or equal to price, each sale loses money before fixed costs.

Low contributionLonger path

Small contribution margin means more units are needed to cover fixed costs.

High contributionShorter path

Higher contribution margin lowers the units needed to reach break-even.

Calculator accuracy

Methodology and assumptions

The formula, inputs, example, and limitations are shown so the result is checkable, not just a number in a box.

Formula

Break-even units = fixed costs / (price per unit - variable cost per unit)

Inputs used

Fixed costs, Price per unit, Variable cost, Target profit

Limitations

Results are estimates for quick planning and should be checked before important financial, legal, tax, health, or business decisions.

Last reviewed

May 25, 2026

Cite this page

Toolkit Shelf. Break-Even Calculator. Retrieved May 25, 2026, from https://toolkitshelf.com/tools/break-even-calculator

FAQ

Common questions

What is break-even point?

Break-even point is the unit volume or revenue where profit is zero after covering fixed and variable costs.

What is contribution margin?

Contribution margin is price per unit minus variable cost per unit. It is the amount each sale contributes toward fixed costs and profit.

Should I include payroll in fixed costs?

Include payroll, rent, software, insurance, and other costs that must be covered during the period you are modeling.

Can this replace accounting or legal advice?

No. Business calculators are scenario tools. Contracts, taxes, payment timing, accounting treatment, refunds, and legal requirements can change decisions.

What should I do after using a business calculator?

Save the assumptions, compare a conservative scenario, and review the result with actual books, contracts, or an advisor before making a high-stakes decision.

Why might another calculator show a different result?

Different calculators may use different rounding, assumptions, default rates, formulas, or input timing. Compare the visible formula and inputs before relying on the number.