About the Product Profit Calculator
Product profit measures what is left after your per-sale costs. Use it when pricing products sold through your own shop or a marketplace.
Formula or method
Profit per sale = selling price − product cost − shipping − advertising − (selling price × fee rate). Margin = profit ÷ selling price × 100.
Worked example
If you sell at 100, with a 40 product cost, 8 shipping, 3 advertising and a 5% marketplace fee, estimated profit is 44 per item (44% margin). At 100 sales, estimated total profit is 4,400.
How to use the tool
Start with the example values above, then replace each input with your own figures. The results update immediately. Review the units, denominators, and assumptions before using any number in an important decision.
Assumptions and limitations
The current calculator does not separately model packaging, returns, fixed overhead, payment processing, taxes or currency conversion. Add excluded expenses to your cost model before relying on the result.
Frequently asked questions
Why is my profit margin lower than my markup?
Margin compares profit to selling price, while markup compares profit to cost. They use different denominators.
Privacy and support
Your inputs are processed locally in your browser. ToolMosaic does not upload or store the values you enter in this tool. Our tools are free, and we appreciate your support.