Run the numbers

Choose the calculation you need. Every tool is free; your inputs stay in your browser.

Use your own evidence

Defaults demonstrate the arithmetic. They are not payment-provider quotes, measured customer demand or promised results.

Keep spending, orders and refunds on the same reporting basis. A ratio cannot verify whether a buyer needs your product or whether a reported sale was paid.

For editable workbooks and a place to record launch decisions, explore the paid library. You can use the free tools without buying anything.