Break-Even Calculator

How Break-Even Calculator works

Find how many units you must sell to cover fixed costs, plus revenue and contribution margin. Everything happens inside this page: the tool reads your input, runs the calculation or conversion locally, and hands the result back to you. Nothing is transmitted, because there is no backend to transmit it to.

That design choice is deliberate. Most free tool sites upload your files to a server, process them there, and quietly keep a copy. Toolcin cannot do that — the site is a set of static files. If your connection dropped the moment the page finished loading, every tool would still work.

Units needed to cover fixed costs

Contribution per unit is price minus variable cost. Divide fixed costs by that contribution and you get the number of units that breaks even.

With 500,000 of fixed costs, a 1,500 price and 900 variable cost, the contribution is 600 and the break-even is 833.33 units — so 834 units in practice, because selling a third of a unit is not possible.

Why the variable cost is the important field

Fixed costs are what people track; variable cost is what quietly decides viability. A 1,500 price with 1,400 variable cost leaves 100 of contribution, which needs 5,000 units to cover the same fixed costs.

That is why businesses with thin contribution margins survive only on volume.

What break-even does not include

Owner's salary, tax, financing costs and the cost of acquiring customers. A break-even figure that excludes marketing is a production break-even, not a business one.

The calculator also reports revenue at break-even, which is the number to compare against realistic demand.

Good to know

• Works offline once loaded, including on flights and in locked-down networks.
• No file size limit beyond your device's own memory.
• Free to use, with no account and no usage counter.
• Results are produced locally, so they are not logged or shared with anyone.

Questions

How this number is produced

The calculation is fixed costs ÷ (price − variable cost per unit), following standard break-even analysis. The formula is repeated here so the result can be checked by hand rather than taken on trust.

This is a calculator, not advice. No clinician, accountant or adviser has reviewed it, and it cannot see your circumstances. For anything involving health, a loan, a tax filing or a religious obligation, confirm the figure with a qualified professional or the authority that publishes the rule.