Business Buddy
Your all-in-one small business calculator. Pick a calculation from the menu, pop in your numbers, and get an instant answer — profit margin, break-even, cash flow and more. Runs entirely in your browser, no sign-up.
Ten small-business calculations in one place
Business Buddy bundles the numbers small business owners reach for most often. Choose one from the menu above; here is what each one does and the formula behind it.
| Area | Calculation | Formula |
|---|---|---|
| Profitability | Profit Margin & Markup | Margin = (Price − Cost) ÷ Price; Markup = (Price − Cost) ÷ Cost |
| Profitability | Net Profit Margin | (Net Profit ÷ Revenue) × 100 |
| Pricing | Price for a Target Margin | Price = Cost ÷ (1 − Target Margin%) |
| Revenue | Revenue Growth % | ((Current − Previous) ÷ Previous) × 100 |
| Cash Flow | Operating Cash Flow | Net Income + Depreciation − Increase in Working Capital |
| Liquidity | Current Ratio | Current Assets ÷ Current Liabilities |
| Break-Even | Break-Even Point | Fixed Costs ÷ (Price − Variable Cost per Unit) |
| Efficiency | Revenue per Employee | Revenue ÷ Number of Employees |
| Inventory | Inventory Turnover | COGS ÷ Average Inventory |
| Customers | Customer Acquisition Cost | Marketing & Sales Spend ÷ New Customers |
This table is a general reference. For what each calculation means and its formula, choose it from the menu above — the explanation appears directly under the calculator.
Who it’s for and how to use it
Business Buddy is built for small business owners, freelancers and founders who want a fast, honest answer without opening a spreadsheet. Choose the calculation that matches your question from the menu at the top, enter your figures, and read the result alongside the plain-English explanation beneath the calculator. Because everything runs in your browser, none of your numbers are stored or shared.
Most owners come back to a handful of these regularly: profit margin and pricing when setting or reviewing prices, break-even when planning volume or launching a product, operating cash flow and current ratio to keep an eye on liquidity, and CAC when weighing up marketing spend. Checking them monthly is one of the simplest habits for catching trouble — thinning margins, a climbing break-even or tightening cash — long before it becomes a crisis.
Frequently asked questions
What is Business Buddy?
Business Buddy is a free all-in-one small business calculator. Choose a calculation from the menu — profit margin and markup, net profit margin, revenue growth, operating cash flow, break-even, target-margin pricing, revenue per employee, inventory turnover, customer acquisition cost or current ratio — enter your numbers, and get an instant result. Everything runs in your browser with no sign-up.
What is the difference between margin and markup?
Margin is profit as a percentage of the selling price (profit divided by price). Markup is profit as a percentage of the cost (profit divided by cost). They describe the same profit from different angles, so a 50% markup equals only a 33% margin. Confusing the two leads to underpricing.
How do I calculate break-even?
Break-even units equal your fixed costs divided by the contribution margin per unit (selling price minus variable cost per unit). Business Buddy also shows the revenue that represents and the contribution each extra sale adds.
Is my data private?
Yes. All calculations run in your browser. Nothing is sent to a server, stored or shared, and there is no sign-up.