Product Margin Calculator
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What the Product Margin Calculator measures
Product margin helps compare profitability across items with different prices. Measure ecommerce performance, order economics, marketplace costs and store growth without spreadsheets.
The result becomes more useful when every input follows the same definition and reporting period. That keeps comparisons between campaigns, products, customers and time periods meaningful.
When to use this calculator
- Use the Product Margin Calculator to review store economics using order, revenue and customer data.
- Compare product or marketplace performance using the same reporting period.
- Model how changes in conversion, fees or order value affect the business.
Formula
Percentage results are most useful when the numerator and denominator come from the same population and reporting period.
How to use this calculator
- Selling PriceUse the value from the same reporting period or scenario as your other inputs.
- Landed CostUse the value from the same reporting period or scenario as your other inputs.
- Selling FeesUse the value from the same reporting period or scenario as your other inputs.
- Complete the required inputsThe result updates automatically as the values become valid.
- Compare the resultUse a previous period, target or relevant internal benchmark before making a decision.
Worked example
Using the demonstration values — Selling Price = 80, Landed Cost = 35, Selling Fees = 8 — the calculator returns 46.25%. The example shows how the formula behaves; replace the demonstration data with your own before using the result for planning.
How to interpret the result
Product margin helps compare profitability across items with different prices. Use these calculators for store planning, product economics, checkout performance and marketplace decision-making.
Check the definition of Selling Price, Landed Cost, Selling Fees, the attribution or accounting rules behind those inputs, and any important costs or outcomes that the formula does not include.
Common mistakes to avoid
- Using Selling Price and Landed Cost from different reporting periods or definitions.
- Ignoring marketplace, payment or fulfilment costs when they materially affect the result.
- Using order and customer counts from different periods.
Frequently asked questions
What does this calculator do?
Calculate product margin after landed cost and entered selling fees.
Where should I get the input values?
Use your own advertising platform, ecommerce system, accounting report, CRM, analytics platform or forecast — whichever source is authoritative for the metric. Keep all inputs on the same basis and date range.
Is there one good result I should target?
Usually not. A useful target depends on your margins, acquisition model, operating costs, channel, market and business goals. Your own historical performance is often a better starting benchmark than a generic number.
Can I use this for forecasting?
Yes. Enter forecast values to model a scenario, but treat the output as an estimate based on those assumptions rather than a prediction of future performance.
What to calculate next
Product margin helps compare profitability across items with different prices. A single metric rarely explains the whole decision, so compare this result with the related cost, conversion, margin or growth metrics below before acting on it.
Calculate product-level profit before overhead from selling price, landed cost and fees.
Calculate the percentage of sold items that were returned.
Calculate total landed cost per unit including product, freight, duties and other entered costs.
Keep reporting periods and metric definitions consistent when moving between calculators. That makes the comparison more useful than treating each result as a standalone benchmark.