Data stays local

Break-even calculator

Calculate the minimum number of sales needed to cover fixed costs.

The result is a business estimate, not tax or accounting advice.

Enter assumptions

How does this calculator work?

Break-even is the number of sales needed for contribution margin to cover fixed costs in the selected period.

Practical use

If each sale contributes 400 and fixed costs are 12,000, break-even is 30 sales.

Limitations

When variable cost equals or exceeds price, change the price or cost structure first.

Frequently asked questions

Is my data uploaded?

No. Calculations run in your browser. History is stored locally on this device only.

Does the result include tax?

Taxes are not added automatically. Use one consistent basis for all inputs and account for your own tax situation.

How can I save the result?

Keep local history, copy the summary, download JSON or CSV, or print to PDF.

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