What it does
The calculator estimates how many units you need to sell, and how much revenue you need, to reach break-even. Break-even is the point where total revenue equals total cost, so net profit is zero.
Instructions / United States
How to use the break-even point calculator
This page explains what the calculator does, who should use it, what each input means, and how to interpret the result for a real business.
Who should use it
It is useful for store owners, operators, small manufacturers, and service businesses that want a quick view of how many units they need to sell to cover their costs.
Input definitions
- Fixed costs: costs that do not change with the number of units sold, such as rent, salaries, or monthly equipment depreciation
- Price per unit: the amount the customer pays for one item, one order, or one service
- Variable cost per unit: the cost that increases with each unit sold, such as ingredients, shipping, or packaging
Formula
Contribution margin per unit = Price per unit - Variable cost per unit
Break-even units = Fixed costs ÷ Contribution margin per unit
Break-even revenue = Break-even units × Price per unit
Assumptions
- Uses USD for the example
- Price and variable cost stay constant during the period you are modeling
- Taxes and discounts are not included automatically
- If variable cost is higher than sale price, the calculator will not compute a break-even point
Visual summary
Quick example
A bakery with oven depreciation and rent totaling $30,000 per month sells pastries at $45 each and has variable costs such as flour, sugar, eggs, and packaging of $18 per item.
Contribution margin per unit = 45 - 18 = 27 dollars
Break-even units = 30,000 ÷ 27 = 1,111.11 units
Round up to 1,112 units and about $50,000 in sales.
How to read the result
If you sell fewer units than break-even, the business is still recovering fixed costs. If you sell more units, the extra sales start producing profit.
Common mistakes
- Including every monthly expense inside variable cost
- Forgetting to include equipment depreciation or rent inside fixed costs
- Using a sale price that does not match the actual customer price
Limitations
- This is a simple planning tool, not accounting advice
- Real businesses may have discounts, freight, or seasonality that change the result
- If your product mix changes, you may need to model each product separately