Business Calculator
Margin, markup, ROI and break-even in one place: enter cost and price, see the profit instantly. It runs entirely in your browser — no signup, no installation, and nothing you paste or drop leaves your device.
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Every tab is a single formula applied to the numbers you type: margin = (price - cost) / price, markup = (price - cost) / cost, contribution margin = price - variable cost, ROI = (return - investment) / investment, profit = revenue - variable costs - fixed costs, return on sales = profit / revenue, cash flow = cash in - cash out. Each tab shows the formula with your own numbers filled in.
Seven Business Ratios in One Tool
This business calculator collects the seven ratios that come up most often in day-to-day pricing and controlling work, each in its own tab. Margin and markup turn a cost and a price into a percentage; the contribution margin tab shows how much each unit contributes towards fixed costs; ROI compares your return with the investment, including an annualised figure and the payback period; profit subtracts variable and fixed costs from revenue; return on sales expresses profit as a share of revenue; and cash flow offsets cash in against cash out for the period. Every tab shows its own formula with your numbers filled in, so you can see exactly what was calculated and check it by hand. All figures are plain numbers you type — no exchange rates, no tax rules, no assumptions about your industry are applied.
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What is Business Calculator?
Business Calculator is a free online business tool built for freelancers, small teams and operations staff. Margin, markup, ROI and break-even in one place: enter cost and price, see the profit instantly In practice you enter your cost and selling price, read margin, markup, ROI and break-even, and then adjust the price to see the profit change.
Your figures stay in the tab — no account, no upload and no analytics on what you typed.
How to use Business Calculator
- Enter your cost and selling price.
- Read margin, markup, ROI and break-even.
- Adjust the price to see the profit change.
Business Calculator FAQ
Is Business Calculator free to use?
Yes. Business Calculator is completely free and needs no account, no trial and no payment details. Every feature on the page is available without limits.
Is my data uploaded anywhere?
No. Business Calculator runs entirely in your browser, so the text, file or number you enter never leaves your device.
Does Business Calculator work on a phone or tablet?
Yes. It works in any modern browser on desktop, tablet and phone. There is no app to install and no account to create.
How do I use Business Calculator?
Enter your cost and selling price. Read margin, markup, ROI and break-even. Adjust the price to see the profit change.