Break-even Calculator

What does this break-even calculator show?

The calculator estimates the sales volume where contribution from each unit exactly covers fixed costs. It shows contribution per unit, contribution margin, theoretical break-even units and revenue, and the minimum whole units needed when a fractional product cannot be sold.

Break-even formula

Contribution per unit is calculated first:

Contribution per unit = selling price per unit − variable cost per unit

The unit break-even point is then:

Break-even units = fixed costs ÷ contribution per unit

With 1,000 in fixed costs, a selling price of 30, and variable cost of 18, contribution is 12 per unit. The exact break-even point is 83.3333 units, so at least 84 whole units are needed.

Why are exact and whole units different?

Division can produce part of a unit. That theoretical result is useful for understanding the precise cost relationship, but many products can only be sold as whole units. Rounding down would leave some fixed cost uncovered, so the practical target is rounded up.

Services, subscriptions, usage, weight, or time may be sold fractionally. In those situations, the exact result may be meaningful, depending on the business model.

What is contribution margin?

Contribution margin percentage divides contribution per unit by selling price. It shows the share of each sale remaining after that unit's variable cost. That remaining amount first covers fixed costs; only sales beyond break-even contribute to profit under the assumptions entered.

Which costs should be included?

Fixed costs may include rent, salaried labour, software subscriptions, insurance, or setup expenses that do not change directly with each unit. Variable costs may include materials, packaging, per-sale payment fees, fulfilment, or commissions that rise with sales volume.

Cost behaviour differs by business and time period. Classify each amount consistently for the specific scenario being reviewed.

How to use the calculator

1. Choose a currency for display formatting.
2. Enter the total fixed costs for the period or project.
3. Enter the selling price charged for one unit.
4. Enter the variable cost caused by one unit.
5. Calculate and review exact units, whole units, revenue, and contribution.

Important limitations

• Selling price and variable cost are assumed to remain constant.
• Every unit is assumed to be sold at the entered price.
• Capacity limits, demand, product mix, and timing are not modelled.
• Taxes, discounts, refunds, and financing are not added automatically.
• Currency selection changes formatting and performs no conversion.
• The result is a planning estimate, not accounting or financial advice.

Frequently asked questions

Why must price be higher than variable cost?

When variable cost equals or exceeds price, each sale contributes zero or a negative amount toward fixed costs. A finite break-even sales quantity therefore cannot be calculated under those inputs.

Does breaking even mean the business is financially healthy?

Not necessarily. Break-even only reflects the costs and price included in this scenario. Cash timing, debt, taxes, demand, risk, owner compensation, and future investment may still matter.

Are the entered figures saved?

No. The calculation runs locally in the browser and this tool does not save the entered financial figures to a Yellow Tools account.

Need a broader commercial model?

Break-even is one part of pricing and planning. Yellow Solutions can help structure offers, customer journeys, measurement, and digital operations around the wider business objective.