Break-Even Point Calculator
Use this calculator to find how many units you need to sell to cover all costs.
Break-Even Units = Fixed Costs ÷ (Selling Price per Unit − Variable Cost per Unit)
What is the break-even point?
The break-even point is the level of sales where your total revenue exactly equals your total costs. At this point, profit is zero. You are not losing money, but you are not earning profit yet either. Knowing this number helps business owners set pricing, sales targets, and budgets with confidence.
Formula to calculate break-even point
1) Break-even point in units
This is the most common formula:
Break-Even Units = Fixed Costs ÷ (Selling Price per Unit − Variable Cost per Unit)
The term (Selling Price − Variable Cost) is called the contribution margin per unit. It tells you how much each sale contributes toward covering fixed costs.
2) Break-even point in sales dollars
If you prefer a revenue target instead of a unit target, use:
Break-Even Sales ($) = Fixed Costs ÷ Contribution Margin Ratio
Where:
- Contribution Margin Ratio = (Selling Price − Variable Cost) ÷ Selling Price
Step-by-step example
Imagine a business with:
- Fixed costs = $20,000
- Selling price per unit = $50
- Variable cost per unit = $30
First, calculate contribution margin per unit:
$50 − $30 = $20
Next, calculate break-even units:
$20,000 ÷ $20 = 1,000 units
So this business must sell 1,000 units to break even. Any sale beyond 1,000 units starts generating operating profit.
Why this formula matters
- Helps you set realistic monthly and annual sales goals
- Shows whether your pricing can support your cost structure
- Supports decisions on cost cutting, expansion, or promotions
- Improves cash flow planning and risk management
Common mistakes when calculating break-even
- Mixing monthly fixed costs with yearly unit sales (time periods must match)
- Forgetting semi-variable costs like utilities, shipping tiers, or commissions
- Using an average variable cost that is no longer accurate
- Ignoring discounts that lower actual selling price
Advanced variation: target profit formula
Break-even gives you zero profit. If you want a specific profit target, adjust the formula:
Required Units = (Fixed Costs + Target Profit) ÷ Contribution Margin per Unit
This is useful for planning annual goals, bonus thresholds, or investor expectations.
Quick checklist for better accuracy
- Update fixed and variable costs regularly
- Use net selling price after expected discounts
- Review break-even monthly, not just once per year
- Track contribution margin trends as costs change
Final takeaway
The formula to calculate break-even point is simple, but powerful. When used correctly, it gives a clear benchmark for pricing, sales strategy, and profitability. Use the calculator above to run scenarios quickly and make smarter business decisions.