Free Business Calculators

Run the numbers behind a small business: pricing and margins, break-even sales, staffing costs, inventory and the customer metrics that drive growth, plus a free invoice generator.

Profit Margin CalculatorGross, operating and net margin.Markup CalculatorPrice from cost and markup.Break-Even CalculatorUnits needed to cover costs.Commission CalculatorFlat or tiered sales commission.Employee Cost CalculatorTrue cost of an employee.Depreciation CalculatorStraight-line and declining balance.Inventory Turnover CalculatorTurnover and days in inventory.Reorder Point CalculatorWhen to reorder stock.EOQ Calculator (Economic Order Quantity)Best order size (EOQ).Customer Lifetime Value CalculatorLifetime value of a customer.Churn Rate CalculatorCustomer churn and retention.Customer Acquisition Cost (CAC) CalculatorCost to acquire a customer.Free Invoice GeneratorCreate and print an invoice.ROI CalculatorReturn on investment and annualized ROI.

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Where to start

Setting prices? Use the markup and profit margin calculators together, then check how many sales you need with the break-even calculator. Planning to hire? The employee cost calculator shows the true cost beyond salary. Selling online or by subscription? Track customer lifetime value, acquisition cost and churn.

For planning, not accounting

These calculators are designed for quick decisions and learning. For tax filings, financial statements and payroll, rely on your accountant or accounting software.

Frequently asked questions

Is the invoice generator free to use for my business?

Yes. Create as many invoices as you like and save them as PDFs. Nothing is stored on our servers.

What is the difference between markup and margin?

Markup is profit as a share of cost; margin is profit as a share of price. The markup calculator includes a conversion table.