Using this calculator
How to use it
Enter values in the same unit and review the result before using it. The calculator does not assign a currency or save your values in a share link.
Margin is calculated from selling price and cost. Markup is calculated from cost. Fee results subtract only the rate you enter; they do not include taxes, shipping, fixed fees, or platform-specific settlement rules.
Check important results
Use the result as a working calculation and confirm important decisions with the relevant records, terms, or professional advice.
The service is free to use in its current scope. No purchase, subscription, paid feature, or product order is available here.