Break-even units calculator
Find units to sell to cover fixed and variable costs.
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Tool guide
Break-even units calculator: how it works
Practical information to understand the result and use this tool correctly.
About Break-even units calculator
Break-even units equal fixed costs divided by contribution margin (price minus variable cost per unit).
If margin is zero or negative, there is no finite break-even—each sale loses money on variable cost alone.
This unit model is simpler than full investment break-even tools; it focuses on quantity planning for a single product.
How to use it
- 1Enter fixed costs, selling price, and variable cost per unit.
- 2Calculate break-even units (rounded up for whole units).
- 3Stress-test with lower prices or higher fixed costs.
Frequently asked questions
- Taxes and inventory?
- Not included. Extend the model in a spreadsheet if tax or stock constraints matter.
- Multiple products?
- Use a weighted average margin or separate break-evens per product line.