Break-Even Calculator
Find the sales volume that covers your costs.
All calculations happen locally in your browser — nothing is uploaded, stored or tracked.
Enter your costs
Fixed costs and variable cost per unit.
Enter the selling price
Price per unit.
Read the break-even
Units, revenue and contribution margin.
What Is Break-Even Analysis?
The break-even point is the sales volume at which total revenue exactly covers total costs — no profit, no loss. Below it you lose money; above it, every additional unit contributes profit.
The calculator works out the break-even in units and in revenue, and shows the contribution margin per unit — the amount each sale contributes toward fixed costs and profit.
The Formula
Price − variable cost is the contribution margin. Fixed costs (rent, salaries) are paid regardless of volume; variable costs (materials) scale with units.
Your data never leaves your device.
Every calculation on this site runs in your browser using vanilla JavaScript. Nothing is uploaded, stored or tracked.
- 100% local, client-side calculations
- No data stored on any server
- No tracking, no analytics, no ads scripts
- Works offline once loaded
Frequently Asked Questions
How do I calculate the break-even point?
Divide fixed costs by the contribution margin (price minus variable cost per unit).
What is contribution margin?
The selling price minus variable cost — what each unit contributes toward fixed costs and profit.
What are fixed vs variable costs?
Fixed costs stay constant (rent, salaries); variable costs change with volume (materials, shipping).
What happens after break-even?
Every unit sold beyond break-even adds the contribution margin to profit.
Can I calculate a target profit?
Add the target profit to fixed costs in the numerator: (fixed + target) ÷ contribution margin.