Utility · demo-live · official
Profit margin calculator
Last checked: · UPDATE 049 (public baseline)
Direct answer
Enter the total cost and expected sale value of the same item or batch. Gross profit is sale value minus cost; margin divides profit by sale value, while markup divides profit by cost. A zero denominator is reported as undefined, not a zero-percent return.
Enter your own observed values. No game prices are prefilled.
Keep the comparison like for like
Use a total purchase cost with a total sale value, or a unit cost with a unit sale value. Mixing a batch cost with a single-item sale would produce a valid calculation for the wrong question. Include additional costs only when you can observe and allocate them.
Margin is not markup
Margin expresses the profit as a share of sale value. Markup expresses it as a share of cost. They use different denominators and should not be interchanged. Selling below cost produces a negative gross profit; zero sale or zero cost makes the corresponding percentage undefined.
Use a scenario, not a promise
The result does not guarantee a buyer, an accepted offer or a future market price. Enter an observed offer or a clearly chosen scenario, then change the sale value to compare alternatives. Refreshing clears the fields.