Contribution / unit
$0.00
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Break-even Calculator
See how many units you need to sell before you stop losing money — and how many more to hit a target profit.
0
units to break even
Break-even revenue
$0.00
Units for target profit
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Profit at expected volume
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The formula
Break-even units = fixed costs ÷ contribution per unit, where contribution = price − variable cost. Add a target to cover it on top: (fixed + target) ÷ contribution. Fixed costs typically include rent, software and salaries; variable costs scale with each unit sold.
How break-even is calculated
Break-even point = Fixed Costs divided by (Price minus Variable Cost per Unit). The contribution margin (how much each sale contributes to covering fixed costs) is the key number. At break-even, profit equals zero.
Frequently asked questions
How many units must I sell to break even?
Divide total fixed costs by the profit left on each unit after variable cost. With $1,000 fixed cost and $15 contribution, you need 67 units (~67).
What's contribution margin?
Price minus variable cost. It's the dollars each sale contributes toward covering fixed costs and, beyond break-even, profit.
Last updated — rates and figures change over time, so always confirm with the current source.
Figures are estimates for general information, not financial advice — see our disclaimer.
How to verify this calculator
- Last verified
- — the calculation logic and the automated regression suite were re-run on this date. Fee and rate fields are editable estimates; confirm current values against the official schedule before relying on them.
- Official / methodology source
- No platform fee schedule applies to this calculator. Its formula is documented in the project source and exercised by the regression suite linked below.
- Method & testing
- All arithmetic runs locally in your browser — no input is uploaded. Calculation behaviour is exercised by the repository's regression suite: 39/39 checks passed (run 2026-11-08). Source & tests on GitHub.
- Maintained by
- Jim (Maoming, Guangdong, China) · eyetoolkit. Report a wrong result through the contact page.
- Changelog
- 2026-11-08 — Added this verification panel (last verified date, official or methodology source, test coverage, named maintainer, changelog). Calculator logic and default rates are unchanged.