Tax, Salary & Business
Break-Even Calculator
Break-Even: it computes the break-even quantity = fixed costs ÷ (price − variable cost per unit). Worked through below with real figures, and the calculator repeats the working on your own inputs — free, on-device, instant.
Break-Even Calculator takes your fixed costs, price per unit and variable cost per unit and gives back the break-even units and revenue, applying fixed costs ÷ (price − variable cost per unit). It's a quick, browser-based way to work out the break-even point.
Estimate only — not financial or accounting advice. Results depend on the figures you enter and exclude taxes, fees and one-off costs unless a field asks for them.
About this calculator
Break-Even is easiest to get wrong in the setup, not the arithmetic. It computes the break-even quantity = fixed costs ÷ (price − variable cost per unit). It matters whenever pay, prices or filings depend on getting the arithmetic right before the paperwork does. The worked example on this page (With 100,000 fixed costs, a 500 price and 300 variable cost, break-even = 100,000 ÷ (500 − 300) = 500 units .) shows the full substitution; the calculator above runs the same working on your own numbers, in your browser, with nothing uploaded.
How to use
- Enter your total fixed costs.
- Enter the selling price per unit.
- Enter the variable cost per unit (must be below the price).
- Tap Calculate to see break-even units and revenue.
Why use the Break-Even Calculator
Instant
Every figure is computed on your device the moment you tap Calculate.
Private
Your numbers stay in your browser; nothing is sent to a server or saved.
Free
No signup, no paywall, and no ads placed inside your results.
Works offline
Once the page has loaded it keeps working even on a weak connection.
Mobile-first
Laid out for phones and tablets just as much as for desktops.
Honest estimates
Uses simplified, standard formulas for educational estimates; real-world figures vary with local rules, fees, and current rates.
Common uses
Use it when planning a startup launch
Use it for a quick break-even check
Use it for unit-economics checks
Use it when modelling a new line
Use it for pricing a new product
Use it for margin-of-safety planning
Technical notes
Break-Even Calculator computes the break-even quantity = fixed costs ÷ (price − variable cost per unit).
Figures use the costs, prices and rates you enter and exclude taxes and one-off charges unless a field asks for them.
All arithmetic runs in your browser using double-precision floating point, so extreme inputs may show tiny rounding differences.
Worked example
With 100,000 fixed costs, a 500 price and 300 variable cost, break-even = 100,000 ÷ (500 − 300) = 500 units.
FAQ
How does this break-even calculator find the point?
It divides fixed costs by the contribution margin per unit (price minus variable cost), which gives the number of units needed to cover all costs.
Does the Break-Even Calculator send my data to a server?
No. The Break-Even Calculator runs entirely in your browser with JavaScript; the values you enter never leave your device and nothing is uploaded or saved.
Why must price exceed variable cost?
If the price does not exceed the variable cost, each sale loses money and there is no break-even point, so the tool asks for a higher price.
What is contribution margin?
It is the price per unit minus the variable cost per unit, the amount each sale contributes toward fixed costs and then profit.