Quick guide
How to use this calculator
- Gather Net profit, and Net revenue for the same business scenario before calculating.
- Match balance-sheet dates and income-statement periods, and do not mix cash-basis, accrual-basis, gross, or net figures without an explicit reconciliation.
- Apply the displayed net profit margin result to the stated decision only after checking every entered assumption.
Calculation method
Calculation method
Net profit margin = Net profit ÷ Net revenue × 100%.
The calculation uses these named inputs: Net profit, and Net revenue. No market rate, benchmark, tax rule, or accounting classification is inserted automatically.
Fixed-decimal arithmetic remains exact through display unless a result is explicitly labelled approximate, such as a square-root inventory quantity.
Accounting statements and working capital
Where the Net Profit Margin Calculator helps
Measure net profit as a percentage of net revenue.
Use the result as a transparent reconciliation or ratio built from amounts already classified under a consistent accounting basis.
- Review a month-end management report
- Trace a change in working capital
- Check a ratio before discussing it with an accountant
Interpretation check
How to audit the result
Recalculate the scenario when any of these inputs changes: Net profit, and Net revenue.
Keep this formula beside the result: Net profit margin = Net profit ÷ Net revenue × 100%. Then compare the output with the source records and the calculator-specific assumption below.
- Confirm that all amounts use one currency and reporting period.
- Check that rates, counts, and quantities describe the same population or transaction set.
- Save the entered assumptions with the decision; the result alone is not reproducible evidence.
Worked example
Worked example
Using net profit of 300 and net revenue of 1,200 gives 25%.
Net profit margin = Net profit ÷ Net revenue × 100%.
Supported inputs
Precision and limits
Visible input limits
Fixed decimals accept up to 30 digits and 12 decimal places and are capped at an absolute value of 1e12 per input. Rates are capped at 1000%; percentage shares and method-specific domains may be narrower.
International scope
No currency, tax jurisdiction, accounting framework, payroll rule, marketplace fee schedule, financing term, or industry benchmark is selected automatically.
Decision boundary
Use the result as a transparent reconciliation or ratio built from amounts already classified under a consistent accounting basis. Results remain arithmetic scenarios, not accounting records, forecasts, valuations, legal interpretations, professional advice, or recommendations.
Calculator-specific assumptions
This is a scenario from visitor-entered values. Keep currencies, periods, accounting classifications, and operating definitions consistent. It is not accounting, tax, legal, investment, or business advice.