About this tool
Type the fixed costs of the month (rent, payroll, pró-labore, systems), the selling price per unit, the variable cost per unit and the taxes and fees on each sale. The contribution margin is what each sale leaves after its own costs; the break-even point is the fixed costs divided by it. The calculator shows the units and the revenue per month, the units a day, and a chart where revenue crosses total cost. Add a monthly profit to see how much more you need to sell.
How to use it
- 1 Type the fixed costs of the month.
- 2 Type the price, the variable cost per unit and the taxes and fees on each sale.
- 3 Optionally, type the monthly profit you want.
- 4 Read the revenue and units per month and where the lines cross in the chart.
Frequently asked questions
Are the values I type saved or sent anywhere?
No. Everything is worked out in your browser. Nothing goes to a server, nothing is saved and nothing stays in the page address; only the link you choose to copy carries the values.
What if the contribution margin is negative?
Then each sale costs more than it brings in, and selling more only adds loss: raise the price or lower the variable cost.
Embed this tool
Add this free tool to your own website — copy the code below. It stays up to date automatically.
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