Percentage Calculator
Find a percentage of a number or a percentage change.
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Profit Margin Calculator
Calculate gross profit, margin, and markup from cost and revenue.
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How to use profit margin calculator
- Enter Total cost and Total revenue for the same scope and currency.
- Choose Calculate to obtain gross profit, gross margin, and markup.
- Compare the revenue-based margin with the cost-based markup.
Work through an example
Compare cost and revenue to see why the same gross profit produces different margin and markup percentages.
Calculate gross margin and markup without mixing their bases →Formats, privacy, and practical limits
Illustrative calculations based on the values you enter. Figures exclude fees, taxes, and rate changes unless you include them. Returns are assumptions, not guarantees.
Files and generated results exist only for this tab session. Download any result you want to keep before leaving the page. Browsers may use temporary memory or disk cache while processing.
Frequently asked questions
Why are margin and markup different?
Margin divides gross profit by revenue, while markup divides gross profit by cost. The same profit amount therefore has different percentage bases.
What happens when cost is zero?
The tool still reports profit and margin for positive revenue, but displays markup as undefined because its cost denominator is zero.
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