About Break-Even Calculator
Break-Even Calculator works out how many units a product must sell before the revenue covers its costs. Give it the fixed costs, the selling price and the variable cost per unit, and it returns the point where profit starts - the number of units at which the business stops losing money.
The maths is a single step. The contribution margin is the price minus the variable cost, and the break-even point is the fixed costs divided by that margin, rounded up to a whole unit because a fraction of a unit cannot be sold. The sample inputs of five thousand in fixed costs, a price of fifty and a variable cost of thirty give a margin of twenty and a break-even of 250 units.
One guard matters more than the rest. When the price is at or below the variable cost, there is no margin on any sale and the tool reports the words No profit possible rather than a number. Missing fields are read as zero, so a half-filled form falls into that same no-profit branch without prompting for the missing values.
How to use Break-Even Calculator
- 1 Enter the fixed costs in the first field.
- 2 Enter the selling price and the variable cost per unit.
- 3 Run the tool to read the break-even point in whole units, or the no-profit message.
Frequently asked questions
How is the break-even point calculated?
The contribution margin is the price minus the variable cost, and the fixed costs are divided by that margin, then rounded up to a whole unit. The sample inputs give a break-even of 250 units.
Why did it say No profit possible?
That happens when the price is at or below the variable cost, leaving no contribution margin on any sale. It also appears when a field is missing, since a missing value is read as zero.
Why is the answer always a whole number?
A fraction of a unit cannot be sold, so the result is rounded up to the next whole unit. This keeps the break-even point on the safe side - the point where costs are fully covered.
Does it show a dollar break-even or a chart?
No. It only returns the unit break-even point. There is no revenue or dollar figure, no target-profit calculation and no margin-of-safety number.
Free, online, and private
Free to use
Break-Even Calculator is completely free. There is no account to create, no login, and no hidden charge or usage limit.
Runs online in your browser
It is a free online tool that runs entirely in your browser. Nothing to download or install — open the page and start using it right away.
Your data stays private
All processing happens locally on your device. Your input is never uploaded, stored, or tracked, so it never leaves your browser.
How Break-Even Calculator behaves in detail
These are the specifics of this implementation — the exact ranges, defaults and fixed settings you are working with.
| Parameter | Value |
|---|---|
| Input | three number fields - Fixed costs starting at 5000, Price per unit at 50 and Variable cost per unit at 30 |
| Formula | the contribution margin is the price minus the variable cost, and the break-even point is the fixed costs divided by that margin, rounded up |
| Output | a single line of the form Break-even: N units, or the words No profit possible when the margin is not positive |
| Default | the sample inputs read Break-even: 250 units |
| Rounding | the answer is rounded up to a whole unit, since a fraction of a unit cannot be sold |
| Guard | a price at or below the variable cost produces No profit possible |
Compiled from the implementation of this tool and checked against it by itoolnet.
What Break-Even Calculator does not do
Knowing the edges of a tool saves more time than another list of its features. These are the cases where it will not do what you might expect.
- It only computes the unit break-even point. There is no revenue or dollar break-even, no target-profit calculation, no margin-of-safety figure and no chart - the single number is the whole output.
- A non-positive contribution margin returns the words No profit possible with no further detail. It does not say whether the price equals or is below the variable cost, and it does not distinguish a genuine zero from a missing field.
- Missing fields are read as zero. With no price and no variable cost the margin is zero and the tool reports No profit possible rather than prompting for input, so a half-filled form can look like a legitimate answer.
Tested and documented by itoolnet, the team that builds and maintains this site.