What is Break-Even Calculator?
A break-even calculation estimates the sales volume or revenue needed for contribution from sales to cover fixed costs. It uses the selling price and variable cost per unit that you enter and rounds required volume up to whole units.
When to use it
Use it to estimate the sales volume needed to cover fixed costs, or to test how a target profit changes the required volume.
How the methodology works
Subtract variable cost per unit from selling price to find the contribution margin. Divide fixed costs by that margin, then round the required units up to a whole unit.
- Choose whether fixed costs and any target profit apply to a month, quarter, or year. Keep those amounts on the same period and currency basis.
- Subtract variable cost per unit from selling price to calculate contribution margin per unit.
- Divide fixed costs by contribution margin and round up to a whole unit. For a target profit, divide fixed costs plus target profit by contribution margin and round up.
- Review the result as a simple scenario, not a demand forecast. The calculator assumes one product and stable prices and costs.
Example: A fictional product with a monthly target
Illustrative situation: A small seller estimates monthly fixed costs of $2,000, a selling price of $50 per unit, and variable cost of $30 per unit.
How to apply it: Contribution is $20 per unit. The break-even calculation is $2,000 ÷ $20 = 100 units per month. With a $1,000 target profit, the estimate is ($2,000 + $1,000) ÷ $20 = 150 units, or $7,500 in sales at that whole-unit volume.
Example limits: This scenario is illustrative, not evidence about a real business. Use evidence relevant to your decision for your own facts, ratings, probabilities, or financial estimates.
How to read the result
The unit estimate rounds up to a whole unit for the selected period. Results assume one product, a stable selling price and variable cost, and only the costs entered.
Questions about Break-Even Calculator
Does break-even tell me how many units I will sell?
No. It estimates the volume needed to cover entered costs under the assumptions. It does not estimate demand, capacity, or the probability of reaching that volume.
Why must selling price be greater than variable cost?
The difference is contribution per unit. If it is zero or negative, each additional unit does not contribute a positive amount toward fixed costs, so this calculation cannot produce a finite break-even volume.
Next step
Estimate fixed costs for one period, check a realistic per-unit price and variable cost, then compare the required units with evidence about demand and capacity.
Need a printable resource or a step-by-step method? Business planning tools. Place a break-even estimate alongside the other financial assumptions in a plan.