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Finance & analysis

Break-even calculator

Calculate the whole-unit sales volume needed to cover a supplied fixed cost.

For owners checking whether unit economics cover fixed costs.

XLSX
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Calculate with your assumptions

Ordinary arithmetic in your browser. No account, AI request, or usage charge. Starting values are a fictional example.

Use the same currency and period for every input.

The selling price before any excluded tax.

Costs that change with each additional unit.

Optional: build a deeper model in Workspace

Start with your brief

Prepare the request here, then review it in Workspace before starting. Add files securely after signing in.

Use the same currency and period for every input.

The selling price before any excluded tax.

Costs that change with each additional unit.

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What you can request

Calculate the whole-unit sales volume needed to cover a supplied fixed cost.

Start with the required details, then add files and authorized context in Workspace. Review progress, revise the result, and export the supported format that fits your task. Your account’s existing usage limits apply.

  • No finite break-even exists for positive fixed cost when contribution per unit is zero or negative.
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How to use break-even calculator

Use fixed costs for one period, selling price per unit, and variable cost per unit in the same currency.

Contribution per unit equals selling price minus variable cost. Break-even volume is fixed cost divided by contribution, rounded up for whole units.

Compare the required volume with real demand and capacity. The calculation does not account for changing costs, discounts, taxes, or product mix unless included in the inputs.

What to check before using the result

The example uses prepared assumptions and does not establish market demand.

  • Use consistent units.
  • Do not mix monthly costs with annual volumes.
  • Validate capacity and contribution before treating the result as achievable.

Inspect a worked example

Prepared fictional example · not a live AI run or customer story

Starting information

Fixed costs per period
3000
Price per unit
100
Variable cost per unit
40

Prepared output excerpt

  1. Contribution per unit: 100 − 40 = 60.
  2. Break-even volume: 3,000 / 60 = 50 whole units.
  3. Revenue at that volume: 5,000 in the supplied currency.

The example uses prepared assumptions and does not establish market demand.

Inspect and download the related sample packCapabilities and current limits

Questions about this workflow

What if price equals variable cost?

With a positive fixed cost, there is no finite break-even. Each additional unit contributes nothing toward that cost.

Why round up?

A whole-unit business cannot sell a fraction of a unit. The rounded result is the first whole-unit volume covering the supplied cost.

Sources and scope

Methods and product boundaries reviewed 2026-10-11. The example is a prepared fixture; it is not proof of a live provider run.

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